Defines a pfm file, a 2-d table of floating-point numbers, either 3-component or 1-component, or with a special extension, 2- or 4-component. More...

#include "pfmFile.h"

Inheritance diagram for PfmFile:

Public Member Functions
	PfmFile (const PfmFile &copy)

void	add_sub_image (const PfmFile &copy, int xto, int yto, int xfrom=0, int yfrom=0, int x_size=-1, int y_size=-1, float pixel_scale=1.0)
	Behaves like copy_sub_image(), except the copy pixels are added to the pixels of the destination, after scaling by the specified pixel_scale. More...

void	apply_1d_lut (int channel, const PfmFile &lut, PN_float32 x_scale=1.0)
	Assumes that lut is an X by 1, 1-component PfmFile whose X axis maps points to target points. More...

void	apply_crop (int x_begin, int x_end, int y_begin, int y_end)
	Reduces the PFM file to the cells in the rectangle bounded by (x_begin, x_end, y_begin, y_end), where the _end cells are not included. More...

void	apply_exponent (float gray_exponent)
	Adjusts each channel of the image by raising the corresponding component value to the indicated exponent, such that L' = L ^ exponent. More...

void	apply_exponent (float gray_exponent, float alpha_exponent)
	Adjusts each channel of the image by raising the corresponding component value to the indicated exponent, such that L' = L ^ exponent. More...

void	apply_exponent (float c0_exponent, float c1_exponent, float c2_exponent)
	Adjusts each channel of the image by raising the corresponding component value to the indicated exponent, such that L' = L ^ exponent. More...

void	apply_exponent (float c0_exponent, float c1_exponent, float c2_exponent, float c3_exponent)
	Adjusts each channel of the image by raising the corresponding component value to the indicated exponent, such that L' = L ^ exponent. More...

void	apply_mask (const PfmFile &other)
	Wherever there is missing data in the other PfmFile, set this the corresponding point in this PfmFile to missing as well, so that this PfmFile has only points where both files have points. More...

void	box_filter_from (float radius, const PfmFile &copy)
	Makes a resized copy of the indicated image into this one using the indicated filter. More...

bool	calc_autocrop (int &x_begin, int &x_end, int &y_begin, int &y_end) const
	Computes the minimum range of x and y across the PFM file that include all points. More...

bool	calc_autocrop (LVecBase4f &range) const
	Computes the minimum range of x and y across the PFM file that include all points. More...

bool	calc_autocrop (LVecBase4d &range) const
	Computes the minimum range of x and y across the PFM file that include all points. More...

bool	calc_average_point (LPoint3f &result, PN_float32 x, PN_float32 y, PN_float32 radius) const
	Computes the unweighted average point of all points within the box centered at (x, y) with the indicated Manhattan-distance radius. More...

bool	calc_bilinear_point (LPoint3f &result, PN_float32 x, PN_float32 y) const
	Computes the weighted average of the four nearest points to the floating- point index (x, y). More...

bool	calc_min_max (LVecBase3f &min_points, LVecBase3f &max_points) const
	Calculates the minimum and maximum x, y, and z depth component values, representing the bounding box of depth values, and places them in the indicated vectors. More...

bool	calc_tight_bounds (LPoint3f &min_point, LPoint3f &max_point) const
	Calculates the minimum and maximum vertices of all points within the table. More...

void	clear ()
	Eliminates all data in the file. More...

void	clear (int x_size, int y_size, int num_channels)
	Resets to an empty table with a specific size. More...

void	clear_no_data_value ()
	Removes the special value that means "no data" when it appears in the pfm file. More...

void	clear_to_texcoords (int x_size, int y_size)
	Replaces this PfmFile with a new PfmFile of size x_size x y_size x 3, containing the x y 0 values in the range 0 . More...

void	compute_sample_point (LPoint3f &result, PN_float32 x, PN_float32 y, PN_float32 sample_radius) const

void	copy_channel (int to_channel, const PfmFile &other, int from_channel)
	Copies just the specified channel values from the indicated PfmFile (which could be same as this PfmFile) into the specified channel of this one. More...

void	copy_channel_masked (int to_channel, const PfmFile &other, int from_channel)
	Copies just the specified channel values from the indicated PfmFile, but only where the other file has a data point. More...

void	copy_sub_image (const PfmFile &copy, int xto, int yto, int xfrom=0, int yfrom=0, int x_size=-1, int y_size=-1)

void	divide_sub_image (const PfmFile &copy, int xto, int yto, int xfrom=0, int yfrom=0, int x_size=-1, int y_size=-1, float pixel_scale=1.0)
	Behaves like copy_sub_image(), except the copy pixels are divided into the pixels of the destination, after scaling by the specified pixel_scale. More...

void	fill (PN_float32 value)
	Fills the table with all of the same value. More...

void	fill (const LPoint2f &value)
	Fills the table with all of the same value. More...

void	fill (const LPoint3f &value)
	Fills the table with all of the same value. More...

void	fill (const LPoint4f &value)
	Fills the table with all of the same value. More...

void	fill_channel (int channel, PN_float32 value)
	Fills the indicated channel with all of the same value, leaving the other channels unchanged. More...

void	fill_channel_masked (int channel, PN_float32 value)
	Fills the indicated channel with all of the same value, but only where the table already has a data point. More...

void	fill_channel_masked_nan (int channel)
	Fills the indicated channel with NaN, but only where the table already has a data point. More...

void	fill_channel_nan (int channel)
	Fills the indicated channel with NaN, leaving the other channels unchanged. More...

void	fill_nan ()
	Fills the table with all NaN. More...

void	fill_no_data_value ()
	Fills the table with the current no_data value, so that the table is empty. More...

void	flip (bool flip_x, bool flip_y, bool transpose)
	Reverses, transposes, and/or rotates the table in-place according to the specified parameters. More...

void	forward_distort (const PfmFile &dist, PN_float32 scale_factor=1.0)
	Applies the distortion indicated in the supplied dist map to the current map. More...

void	gamma_correct (float from_gamma, float to_gamma)

void	gamma_correct_alpha (float from_gamma, float to_gamma)
	Assuming the image was constructed with a gamma curve of from_gamma in the alpha channel, converts it to an image with a gamma curve of to_gamma in the alpha channel. More...

void	gaussian_filter_from (float radius, const PfmFile &copy)
	Makes a resized copy of the indicated image into this one using the indicated filter. More...

PN_float32	get_channel (int x, int y, int c) const
	Returns the cth channel of the point value at the indicated point. More...

const LPoint4f &	get_no_data_value () const
	If has_no_data_value() returns true, this returns the particular "no data" value. More...

const LPoint3f &	get_point (int x, int y) const
	Returns the 3-component point value at the indicated point. More...

PN_float32	get_point1 (int x, int y) const
	Returns the 1-component point value at the indicated point. More...

const LPoint2f &	get_point2 (int x, int y) const
	Returns the 2-component point value at the indicated point. More...

const LPoint3f &	get_point3 (int x, int y) const
	Returns the 3-component point value at the indicated point. More...

const LPoint4f &	get_point4 (int x, int y) const
	Returns the 4-component point value at the indicated point. More...

PN_float32	get_scale () const

const vector_float &	get_table () const
	This is a very low-level function that returns a read-only reference to the internal table of floating-point numbers. More...

bool	has_no_data_threshold () const
	Returns whether a "no data" threshold value has been established by set_no_data_threshold(). More...

bool	has_no_data_value () const
	Returns whether a "no data" value has been established by set_no_data_value(). More...

bool	has_point (int x, int y) const
	Returns true if there is a valid point at x, y. More...

void	indirect_1d_lookup (const PfmFile &index_image, int channel, const PfmFile &pixel_values)
	index_image is a WxH 1-channel image, while pixel_values is an Nx1 image with any number of channels. More...

bool	is_column_empty (int x, int y_begin, int y_end) const
	Returns true if all of the points on column x, from [y_begin, y_end), are the no_data value, or false if any one of these points has a value. More...

bool	is_row_empty (int y, int x_begin, int x_end) const
	Returns true if all of the points on row y, in the range [x_begin, x_end), are the no_data value, or false if any one of these points has a value. More...

bool	is_valid () const

bool	load (const PNMImage &pnmimage)
	Fills the PfmFile with the data from the indicated PNMImage, converted to floating-point values. More...

void	merge (const PfmFile &other)
	Wherever there is missing data in this PfmFile (that is, wherever has_point() returns false), copy data from the other PfmFile, which must be exactly the same dimensions as this one. More...

LPoint3f &	modify_point (int x, int y)
	Returns a modifiable 3-component point value at the indicated point. More...

LPoint2f &	modify_point2 (int x, int y)
	Returns a modifiable 2-component point value at the indicated point. More...

LPoint3f &	modify_point3 (int x, int y)
	Returns a modifiable 3-component point value at the indicated point. More...

LPoint4f &	modify_point4 (int x, int y)
	Returns a modifiable 4-component point value at the indicated point. More...

void	mult_sub_image (const PfmFile &copy, int xto, int yto, int xfrom=0, int yfrom=0, int x_size=-1, int y_size=-1, float pixel_scale=1.0)
	Behaves like copy_sub_image(), except the copy pixels are multiplied to the pixels of the destination, after scaling by the specified pixel_scale. More...

void	operator *= (float multiplier)
	Multiplies every point value in the image by a constant floating-point multiplier value. More...

void	operator= (const PfmFile &copy)

void	output (std::ostream &out) const

	PT (BoundingHexahedron) compute_planar_bounds(const LPoint2f &center

	PT (BoundingHexahedron) compute_planar_bounds(const LPoint2d &center

int	pull_spot (const LPoint4f &delta, float xc, float yc, float xr, float yr, float exponent)
	Applies delta * t to the point values within radius (xr, yr) distance of (xc, yc). More...

void	quick_filter_from (const PfmFile &copy)
	Resizes from the given image, with a fixed radius of 0.5. More...

bool	read (const Filename &fullpath)
	Reads the PFM data from the indicated file, returning true on success, false on failure. More...

bool	read (std::istream &in, const Filename &fullpath=Filename())
	Reads the PFM data from the indicated stream, returning true on success, false on failure. More...

bool	read (PNMReader *reader)
	Reads the PFM data using the indicated PNMReader. More...

void	resize (int new_x_size, int new_y_size)
	Applies a simple filter to resample the pfm file in-place to the indicated size. More...

void	reverse_distort (const PfmFile &dist, PN_float32 scale_factor=1.0)
	Applies the distortion indicated in the supplied dist map to the current map. More...

void	reverse_rows ()
	Performs an in-place reversal of the row (y) data. More...

void	set_channel (int x, int y, int c, PN_float32 value)
	Replaces the cth channel of the point value at the indicated point. More...

void	set_no_data_chan4 (bool chan4)
	Sets the no_data_chan4 flag. More...

void	set_no_data_nan (int num_channels)
	Sets the no_data_nan flag. More...

void	set_no_data_threshold (const LPoint4f &no_data_value)
	Sets the special threshold value. More...

void	set_no_data_threshold (const LPoint4d &no_data_value)
	Sets the special threshold value. More...

void	set_no_data_value (const LPoint4f &no_data_value)
	Sets the special value that means "no data" when it appears in the pfm file. More...

void	set_no_data_value (const LPoint4d &no_data_value)
	Sets the special value that means "no data" when it appears in the pfm file. More...

void	set_point (int x, int y, const LVecBase3f &point)
	Replaces the 3-component point value at the indicated point. More...

void	set_point (int x, int y, const LVecBase3d &point)
	Replaces the 3-component point value at the indicated point. More...

void	set_point1 (int x, int y, PN_float32 point)
	Replaces the 1-component point value at the indicated point. More...

void	set_point2 (int x, int y, const LVecBase2f &point)
	Replaces the 2-component point value at the indicated point. More...

void	set_point2 (int x, int y, const LVecBase2d &point)
	Replaces the 2-component point value at the indicated point. More...

void	set_point3 (int x, int y, const LVecBase3f &point)
	Replaces the 3-component point value at the indicated point. More...

void	set_point3 (int x, int y, const LVecBase3d &point)
	Replaces the 3-component point value at the indicated point. More...

void	set_point4 (int x, int y, const LVecBase4f &point)
	Replaces the 4-component point value at the indicated point. More...

void	set_point4 (int x, int y, const LVecBase4d &point)
	Replaces the 4-component point value at the indicated point. More...

void	set_scale (PN_float32 scale)

void	set_zero_special (bool zero_special)
	Sets the zero_special flag. More...

bool	store (PNMImage &pnmimage) const
	Copies the data to the indicated PNMImage, converting to RGB values. More...

bool	store_mask (PNMImage &pnmimage) const
	Stores 1 or 0 values into the indicated PNMImage, according to has_point() for each pixel. More...

bool	store_mask (PNMImage &pnmimage, const LVecBase4f &min_point, const LVecBase4f &max_point) const
	Stores 1 or 0 values into the indicated PNMImage, according to has_point() for each pixel. More...

void	swap_table (vector_float &table)
	This is a very low-level function that completely exchanges the PfmFile's internal table of floating-point numbers with whatever you supply. More...

bool	write (const Filename &fullpath)
	Writes the PFM data to the indicated file, returning true on success, false on failure. More...

bool	write (std::ostream &out, const Filename &fullpath=Filename())
	Writes the PFM data to the indicated stream, returning true on success, false on failure. More...

bool	write (PNMWriter *writer)
	Writes the PFM data using the indicated PNMWriter. More...

void	xform (const LMatrix4f &transform)
	Applies the indicated transform matrix to all points in-place. More...

void	xform (const LMatrix4d &transform)
	Applies the indicated transform matrix to all points in-place. More...

Public Member Functions inherited from PNMImageHeader
	PNMImageHeader (const PNMImageHeader &copy)

ColorSpace	get_color_space () const

ColorType	get_color_type () const
	Returns the image type of the image, as an enumerated value. More...

std::string	get_comment () const

xelval	get_maxval () const

int	get_num_channels () const

LVecBase2i	get_size () const

PNMFileType *	get_type () const

int	get_x_size () const
	Returns the number of pixels in the X direction. More...

int	get_y_size () const
	Returns the number of pixels in the Y direction. More...

bool	has_alpha () const
	Returns true if the image includes an alpha channel, false otherwise. More...

bool	has_type () const

bool	is_grayscale () const
	Returns false if the image is a full-color image, and has red, green, and blue components; true if it is a grayscale image and has only a gray component. More...

PNMReader *	make_reader (const Filename &filename, PNMFileType *type=nullptr, bool report_unknown_type=true) const
	Returns a newly-allocated PNMReader of the suitable type for reading from the indicated image filename, or NULL if the filename cannot be read for some reason. More...

PNMReader *	make_reader (std::istream file, bool owns_file=true, const Filename &filename=Filename(), std::string magic_number=std::string(), PNMFileType type=nullptr, bool report_unknown_type=true) const
	Returns a newly-allocated PNMReader of the suitable type for reading from the already-opened image file, or NULL if the file cannot be read for some reason. More...

PNMWriter *	make_writer (const Filename &filename, PNMFileType *type=nullptr) const
	Returns a newly-allocated PNMWriter of the suitable type for writing an image to the indicated filename, or NULL if the filename cannot be written for some reason. More...

PNMWriter *	make_writer (std::ostream file, bool owns_file=true, const Filename &filename=Filename(), PNMFileType type=nullptr) const
	Returns a newly-allocated PNMWriter of the suitable type for writing to the already-opened image file, or NULL if the file cannot be written for some reason. More...

void	operator= (const PNMImageHeader &copy)

void	output (std::ostream &out) const

bool	read_header (const Filename &filename, PNMFileType *type=nullptr, bool report_unknown_type=true)
	Opens up the image file and tries to read its header information to determine its size, number of channels, etc. More...

bool	read_header (std::istream &data, const std::string &filename=std::string(), PNMFileType *type=nullptr, bool report_unknown_type=true)
	Reads the image header information only from the indicated stream. More...

void	set_comment (const std::string &comment)

void	set_type (PNMFileType *type)
	Sets the file type of this PNMImage. More...

Public Attributes
PN_float32 PN_float32 bool points_only	const

	get_scale
	The "scale" is reported in the pfm header and is probably meaningless. More...

	is_valid

PN_float32	point_dist

PN_float32 PN_float32	sample_radius

	set_scale
	The "scale" is reported in the pfm header and is probably meaningless. More...

Public Attributes inherited from PNMImageHeader
	get_color_space
	Returns the color space that the image is encoded in, or CS_unspecified if unknown. More...

	get_comment
	Gets the user comment from the file. More...

	get_maxval
	Returns the maximum channel value allowable for any pixel in this image; for instance, 255 for a typical 8-bit-per-channel image. More...

	get_num_channels
	Returns the number of channels in the image. More...

	get_size
	Returns the number of pixels in each direction. More...

	get_type
	If the file type is known (e.g. More...

	has_type
	Returns true if the PNMImageHeader knows what type it is, false otherwise. More...

	set_comment
	Writes a user comment string to the image (header). More...

Friends
class	PfmVizzer

Additional Inherited Members
Public Types inherited from PNMImageHeader
enum	ColorType { CT_invalid = 0, CT_grayscale = 1, CT_two_channel = 2, CT_color = 3, CT_four_channel = 4 }

typedef pmap< PixelSpec, int >	HistMap

typedef pvector< PixelSpec >	Palette

typedef pvector< PixelSpecCount >	PixelCount

Static Public Member Functions inherited from PNMImageHeader
static bool	has_alpha (ColorType color_type)
	This static variant of has_alpha() returns true if the indicated image type includes an alpha channel, false otherwise. More...

static bool	is_grayscale (ColorType color_type)
	This static variant of is_grayscale() returns true if the indicated image type represents a grayscale image, false otherwise. More...

static bool	read_magic_number (std::istream *file, std::string &magic_number, int num_bytes)
	Ensures that the first n bytes of the file are read into magic_number. More...

Detailed Description

Defines a pfm file, a 2-d table of floating-point numbers, either 3-component or 1-component, or with a special extension, 2- or 4-component.

Definition at line 31 of file pfmFile.h.

Member Function Documentation

◆ add_sub_image()

void PfmFile::add_sub_image	(	const PfmFile &	copy,
		int	xto,
		int	yto,
		int	xfrom = `0`,
		int	yfrom = `0`,
		int	x_size = `-1`,
		int	y_size = `-1`,
		float	pixel_scale = `1.0`
	)

Behaves like copy_sub_image(), except the copy pixels are added to the pixels of the destination, after scaling by the specified pixel_scale.

Definition at line 1965 of file pfmFile.cxx.

References get_point1(), get_point2(), get_point3(), get_point4(), has_point(), set_point1(), set_point2(), set_point3(), and set_point4().

◆ apply_1d_lut()

void PfmFile::apply_1d_lut	(	int	channel,
		const PfmFile &	lut,
		PN_float32	x_scale = `1.0`
	)

Assumes that lut is an X by 1, 1-component PfmFile whose X axis maps points to target points.

For each point in this pfm file, computes: p(u, v)[channel] = lut(p(u, v)[channel] * x_scale, 0)[0]

Definition at line 1438 of file pfmFile.cxx.

References calc_bilinear_point(), get_channel(), has_point(), and set_channel().

◆ apply_crop()

void PfmFile::apply_crop	(	int	x_begin,
		int	x_end,
		int	y_begin,
		int	y_end
	)

Reduces the PFM file to the cells in the rectangle bounded by (x_begin, x_end, y_begin, y_end), where the _end cells are not included.

Definition at line 1551 of file pfmFile.cxx.

Referenced by PfmTrans::process_pfm().

◆ apply_exponent() [1/4]

void PfmFile::apply_exponent ( float gray_exponent )

inline

Adjusts each channel of the image by raising the corresponding component value to the indicated exponent, such that L' = L ^ exponent.

Definition at line 508 of file pfmFile.I.

Referenced by apply_exponent(), and gamma_correct_alpha().

◆ apply_exponent() [2/4]

void PfmFile::apply_exponent	(	float	gray_exponent,
		float	alpha_exponent
	)

inline

Adjusts each channel of the image by raising the corresponding component value to the indicated exponent, such that L' = L ^ exponent.

Definition at line 517 of file pfmFile.I.

References apply_exponent().

◆ apply_exponent() [3/4]

void PfmFile::apply_exponent	(	float	c0_exponent,
		float	c1_exponent,
		float	c2_exponent
	)

inline

Adjusts each channel of the image by raising the corresponding component value to the indicated exponent, such that L' = L ^ exponent.

For a grayscale image, the blue_exponent value is used for the grayscale value, and red_exponent and green_exponent are unused.

Definition at line 528 of file pfmFile.I.

References apply_exponent().

◆ apply_exponent() [4/4]

void PfmFile::apply_exponent	(	float	c0_exponent,
		float	c1_exponent,
		float	c2_exponent,
		float	c3_exponent
	)

Adjusts each channel of the image by raising the corresponding component value to the indicated exponent, such that L' = L ^ exponent.

Definition at line 2296 of file pfmFile.cxx.

◆ apply_mask()

void PfmFile::apply_mask ( const PfmFile & other )

Wherever there is missing data in the other PfmFile, set this the corresponding point in this PfmFile to missing as well, so that this PfmFile has only points where both files have points.

The point is set to "missing" by setting it the no_data_value.

Definition at line 1490 of file pfmFile.cxx.

◆ box_filter_from()

void PfmFile::box_filter_from	(	float	width,
		const PfmFile &	copy
	)

Makes a resized copy of the indicated image into this one using the indicated filter.

The image to be copied is squashed and stretched to match the dimensions of the current image, applying the appropriate filter to perform the stretching.

Definition at line 654 of file pnm-image-filter.cxx.

◆ calc_autocrop() [1/3]

bool PfmFile::calc_autocrop	(	int &	x_begin,
		int &	x_end,
		int &	y_begin,
		int &	y_end
	)		const

Computes the minimum range of x and y across the PFM file that include all points.

If there are no points with no_data_value in the grid–that is, all points are included–then this will return (0, get_x_size(), 0, get_y_size()).

Definition at line 775 of file pfmFile.cxx.

References is_row_empty().

Referenced by calc_autocrop(), and PfmTrans::process_pfm().

◆ calc_autocrop() [2/3]

bool PfmFile::calc_autocrop ( LVecBase4f & range ) const

inline

Computes the minimum range of x and y across the PFM file that include all points.

If there are no points with no_data_value in the grid–that is, all points are included–then this will return (0, get_x_size(), 0, get_y_size()).

Definition at line 343 of file pfmFile.I.

References calc_autocrop().

◆ calc_autocrop() [3/3]

bool PfmFile::calc_autocrop ( LVecBase4d & range ) const

inline

Computes the minimum range of x and y across the PFM file that include all points.

If there are no points with no_data_value in the grid–that is, all points are included–then this will return (0, get_x_size(), 0, get_y_size()).

Definition at line 357 of file pfmFile.I.

References calc_autocrop().

◆ calc_average_point()

bool PfmFile::calc_average_point	(	LPoint3f &	result,
		PN_float32	x,
		PN_float32	y,
		PN_float32	radius
	)		const

Computes the unweighted average point of all points within the box centered at (x, y) with the indicated Manhattan-distance radius.

Missing points are assigned the value of their nearest neighbor. Returns true if successful, or false if the point value cannot be determined.

Definition at line 607 of file pfmFile.cxx.

References has_point().

◆ calc_bilinear_point()

bool PfmFile::calc_bilinear_point	(	LPoint3f &	result,
		PN_float32	x,
		PN_float32	y
	)		const

Computes the weighted average of the four nearest points to the floating- point index (x, y).

Returns true if the point has any contributors, false if the point is unknown.

Definition at line 689 of file pfmFile.cxx.

References get_point(), and has_point().

Referenced by apply_1d_lut(), and PT().

◆ calc_min_max()

bool PfmFile::calc_min_max	(	LVecBase3f &	min_depth,
		LVecBase3f &	max_depth
	)		const

Calculates the minimum and maximum x, y, and z depth component values, representing the bounding box of depth values, and places them in the indicated vectors.

Returns true if successful, false if the mesh contains no points.

Definition at line 737 of file pfmFile.cxx.

References get_point(), and has_point().

◆ calc_tight_bounds()

bool PfmFile::calc_tight_bounds	(	LPoint3f &	min_point,
		LPoint3f &	max_point
	)		const

Calculates the minimum and maximum vertices of all points within the table.

Assumes the table contains 3-D points.

The return value is true if any points in the table, or false if none are.

Definition at line 1646 of file pfmFile.cxx.

References get_point(), and has_point().

◆ clear() [1/2]

void PfmFile::clear ( )

Eliminates all data in the file.

Definition at line 77 of file pfmFile.cxx.

References clear_no_data_value().

Referenced by clear_to_texcoords(), indirect_1d_lookup(), load(), PfmVizzer::make_displacement(), read(), and resize().

◆ clear() [2/2]

void PfmFile::clear	(	int	x_size,
		int	y_size,
		int	num_channels
	)

Resets to an empty table with a specific size.

The case of num_channels == 0 is allowed only in the case that x_size and y_size are also == 0; and this makes an empty (and invalid) PfmFile.

Definition at line 92 of file pfmFile.cxx.

◆ clear_no_data_value()

void PfmFile::clear_no_data_value ( )

inline

Removes the special value that means "no data" when it appears in the pfm file.

All points will thus be considered valid.

Definition at line 421 of file pfmFile.I.

Referenced by clear(), set_no_data_chan4(), and set_zero_special().

◆ clear_to_texcoords()

void PfmFile::clear_to_texcoords	(	int	x_size,
		int	y_size
	)

Replaces this PfmFile with a new PfmFile of size x_size x y_size x 3, containing the x y 0 values in the range 0 .

. 1 according to the x y index.

Definition at line 1582 of file pfmFile.cxx.

References clear().

◆ copy_channel()

void PfmFile::copy_channel	(	int	to_channel,
		const PfmFile &	other,
		int	from_channel
	)

Copies just the specified channel values from the indicated PfmFile (which could be same as this PfmFile) into the specified channel of this one.

Definition at line 1513 of file pfmFile.cxx.

◆ copy_channel_masked()

void PfmFile::copy_channel_masked	(	int	to_channel,
		const PfmFile &	other,
		int	from_channel
	)

Copies just the specified channel values from the indicated PfmFile, but only where the other file has a data point.

Definition at line 1531 of file pfmFile.cxx.

◆ divide_sub_image()

void PfmFile::divide_sub_image	(	const PfmFile &	copy,
		int	xto,
		int	yto,
		int	xfrom = `0`,
		int	yfrom = `0`,
		int	x_size = `-1`,
		int	y_size = `-1`,
		float	pixel_scale = `1.0`
	)

Behaves like copy_sub_image(), except the copy pixels are divided into the pixels of the destination, after scaling by the specified pixel_scale.

dest(x, y) = dest(x, y) / (copy(x, y) * pixel_scale).

Definition at line 2094 of file pfmFile.cxx.

References get_point1(), and has_point().

◆ fill() [1/4]

void PfmFile::fill ( PN_float32 value )

inline

Fills the table with all of the same value.

Definition at line 316 of file pfmFile.I.

Referenced by fill(), fill_no_data_value(), and resize().

◆ fill() [2/4]

void PfmFile::fill ( const LPoint2f & value )

inline

Fills the table with all of the same value.

Definition at line 324 of file pfmFile.I.

References fill().

◆ fill() [3/4]

void PfmFile::fill ( const LPoint3f & value )

inline

Fills the table with all of the same value.

Definition at line 332 of file pfmFile.I.

References fill().

◆ fill() [4/4]

void PfmFile::fill ( const LPoint4f & value )

Fills the table with all of the same value.

Definition at line 483 of file pfmFile.cxx.

◆ fill_channel()

void PfmFile::fill_channel	(	int	channel,
		PN_float32	value
	)

Fills the indicated channel with all of the same value, leaving the other channels unchanged.

Definition at line 550 of file pfmFile.cxx.

◆ fill_channel_masked()

void PfmFile::fill_channel_masked	(	int	channel,
		PN_float32	value
	)

Fills the indicated channel with all of the same value, but only where the table already has a data point.

Leaves empty points unchanged.

Definition at line 574 of file pfmFile.cxx.

◆ fill_channel_masked_nan()

void PfmFile::fill_channel_masked_nan ( int channel )

Fills the indicated channel with NaN, but only where the table already has a data point.

Leaves empty points unchanged.

Definition at line 595 of file pfmFile.cxx.

◆ fill_channel_nan()

void PfmFile::fill_channel_nan ( int channel )

Fills the indicated channel with NaN, leaving the other channels unchanged.

Definition at line 564 of file pfmFile.cxx.

◆ fill_nan()

void PfmFile::fill_nan ( )

Fills the table with all NaN.

Definition at line 531 of file pfmFile.cxx.

◆ fill_no_data_value()

void PfmFile::fill_no_data_value ( )

Fills the table with the current no_data value, so that the table is empty.

Definition at line 541 of file pfmFile.cxx.

References fill().

◆ flip()

void PfmFile::flip	(	bool	flip_x,
		bool	flip_y,
		bool	transpose
	)

Reverses, transposes, and/or rotates the table in-place according to the specified parameters.

If flip_x is true, the x axis is reversed; if flip_y is true, the y axis is reversed. Then, if transpose is true, the x and y axes are exchanged. These parameters can be used to select any combination of 90-degree or 180-degree rotations and flips.

Definition at line 1174 of file pfmFile.cxx.

Referenced by PfmTrans::process_pfm().

◆ forward_distort()

void PfmFile::forward_distort	(	const PfmFile &	dist,
		PN_float32	scale_factor = `1.0`
	)

Applies the distortion indicated in the supplied dist map to the current map.

The dist map is understood to be a mapping of points in the range 0..1 in the first two dimensions.

The operation can be expressed symbolically as:

this(u, v) = this(dist(u, v))

If scale_factor is not 1, it should be a value > 1, and it specifies the factor to upscale the working table while processing, to reduce artifacts from integer truncation.

By convention, the y axis is inverted in the distortion map relative to the coordinates here. A y value of 0 in the distortion map corresponds with a v value of 1 in this file.

Definition at line 1305 of file pfmFile.cxx.

◆ gamma_correct_alpha()

void PfmFile::gamma_correct_alpha	(	float	from_gamma,
		float	to_gamma
	)

inline

Assuming the image was constructed with a gamma curve of from_gamma in the alpha channel, converts it to an image with a gamma curve of to_gamma in the alpha channel.

Does not affect the RGB channels.

Definition at line 499 of file pfmFile.I.

References apply_exponent().

◆ gaussian_filter_from()

void PfmFile::gaussian_filter_from	(	float	width,
		const PfmFile &	copy
	)

Makes a resized copy of the indicated image into this one using the indicated filter.

The image to be copied is squashed and stretched to match the dimensions of the current image, applying the appropriate filter to perform the stretching.

Definition at line 665 of file pnm-image-filter.cxx.

◆ get_channel()

PN_float32 PfmFile::get_channel	(	int	x,
		int	y,
		int	c
	)		const

inline

Returns the cth channel of the point value at the indicated point.

Definition at line 52 of file pfmFile.I.

Referenced by apply_1d_lut(), and indirect_1d_lookup().

◆ get_no_data_value()

const LPoint4f & PfmFile::get_no_data_value ( ) const

inline

If has_no_data_value() returns true, this returns the particular "no data" value.

Definition at line 451 of file pfmFile.I.

◆ get_point()

const LPoint3f & PfmFile::get_point	(	int	x,
		int	y
	)		const

inline

Returns the 3-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 158 of file pfmFile.I.

References get_point3().

Referenced by calc_bilinear_point(), PfmVizzer::calc_max_u_displacement(), PfmVizzer::calc_max_v_displacement(), calc_min_max(), and calc_tight_bounds().

◆ get_point1()

PN_float32 PfmFile::get_point1	(	int	x,
		int	y
	)		const

inline

Returns the 1-component point value at the indicated point.

Definition at line 74 of file pfmFile.I.

Referenced by add_sub_image(), divide_sub_image(), and mult_sub_image().

◆ get_point2()

const LPoint2f & PfmFile::get_point2	(	int	x,
		int	y
	)		const

inline

Returns the 2-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 96 of file pfmFile.I.

Referenced by add_sub_image(), and mult_sub_image().

◆ get_point3()

const LPoint3f & PfmFile::get_point3	(	int	x,
		int	y
	)		const

inline

Returns the 3-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 193 of file pfmFile.I.

Referenced by add_sub_image(), get_point(), and mult_sub_image().

◆ get_point4()

const LPoint4f & PfmFile::get_point4	(	int	x,
		int	y
	)		const

inline

Returns the 4-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 255 of file pfmFile.I.

Referenced by add_sub_image(), and mult_sub_image().

◆ get_table()

const vector_float & PfmFile::get_table ( ) const

inline

This is a very low-level function that returns a read-only reference to the internal table of floating-point numbers.

Use this method at your own risk.

Definition at line 538 of file pfmFile.I.

◆ has_no_data_threshold()

bool PfmFile::has_no_data_threshold ( ) const

inline

Returns whether a "no data" threshold value has been established by set_no_data_threshold().

Definition at line 442 of file pfmFile.I.

◆ has_no_data_value()

bool PfmFile::has_no_data_value ( ) const

inline

Returns whether a "no data" value has been established by set_no_data_value().

Definition at line 433 of file pfmFile.I.

◆ has_point()

bool PfmFile::has_point	(	int	x,
		int	y
	)		const

inline

Returns true if there is a valid point at x, y.

This always returns true unless a "no data" value has been set, in which case it returns false if the point at x, y is the "no data" value.

Definition at line 44 of file pfmFile.I.

Referenced by add_sub_image(), apply_1d_lut(), calc_average_point(), calc_bilinear_point(), PfmVizzer::calc_max_u_displacement(), PfmVizzer::calc_max_v_displacement(), calc_min_max(), calc_tight_bounds(), divide_sub_image(), mult_sub_image(), and store_mask().

◆ indirect_1d_lookup()

void PfmFile::indirect_1d_lookup	(	const PfmFile &	index_image,
		int	channel,
		const PfmFile &	pixel_values
	)

index_image is a WxH 1-channel image, while pixel_values is an Nx1 image with any number of channels.

Typically pixel_values will be a 256x1 image.

Fills the PfmFile with a new image the same width and height as index_image, with the same number of channels as pixel_values.

Each pixel of the new image is computed with the formula:

new_image(x, y) = pixel_values(index_image(x, y)[channel], 0)

At present, no interpolation is performed; the nearest value in pixel_values is discovered. This may change in the future.

Definition at line 2249 of file pfmFile.cxx.

References clear(), get_channel(), PNMImageHeader::get_num_channels, PNMImageHeader::get_x_size(), and PNMImageHeader::get_y_size().

◆ is_column_empty()

bool PfmFile::is_column_empty	(	int	x,
		int	y_begin,
		int	y_end
	)		const

Returns true if all of the points on column x, from [y_begin, y_end), are the no_data value, or false if any one of these points has a value.

Definition at line 834 of file pfmFile.cxx.

◆ is_row_empty()

bool PfmFile::is_row_empty	(	int	y,
		int	x_begin,
		int	x_end
	)		const

Returns true if all of the points on row y, in the range [x_begin, x_end), are the no_data value, or false if any one of these points has a value.

Definition at line 813 of file pfmFile.cxx.

Referenced by calc_autocrop().

◆ load()

bool PfmFile::load ( const PNMImage & pnmimage )

Fills the PfmFile with the data from the indicated PNMImage, converted to floating-point values.

Definition at line 287 of file pfmFile.cxx.

References clear(), PNMImage::get_alpha(), PNMImage::get_gray(), PNMImageHeader::get_num_channels, PNMImageHeader::get_x_size(), PNMImage::get_xel(), PNMImage::get_xel_a(), PNMImageHeader::get_y_size(), and PNMImage::is_valid().

Referenced by read(), and PNMImage::write().

◆ merge()

void PfmFile::merge ( const PfmFile & other )

Wherever there is missing data in this PfmFile (that is, wherever has_point() returns false), copy data from the other PfmFile, which must be exactly the same dimensions as this one.

Definition at line 1461 of file pfmFile.cxx.

◆ modify_point()

LPoint3f & PfmFile::modify_point	(	int	x,
		int	y
	)

inline

Returns a modifiable 3-component point value at the indicated point.

Definition at line 184 of file pfmFile.I.

References modify_point3().

◆ modify_point2()

LPoint2f & PfmFile::modify_point2	(	int	x,
		int	y
	)

inline

Returns a modifiable 2-component point value at the indicated point.

Definition at line 143 of file pfmFile.I.

Referenced by mult_sub_image().

◆ modify_point3()

LPoint3f & PfmFile::modify_point3	(	int	x,
		int	y
	)

inline

Returns a modifiable 3-component point value at the indicated point.

Definition at line 240 of file pfmFile.I.

Referenced by modify_point(), and mult_sub_image().

◆ modify_point4()

LPoint4f & PfmFile::modify_point4	(	int	x,
		int	y
	)

inline

Returns a modifiable 4-component point value at the indicated point.

Definition at line 302 of file pfmFile.I.

Referenced by mult_sub_image().

◆ mult_sub_image()

void PfmFile::mult_sub_image	(	const PfmFile &	copy,
		int	xto,
		int	yto,
		int	xfrom = `0`,
		int	yfrom = `0`,
		int	x_size = `-1`,
		int	y_size = `-1`,
		float	pixel_scale = `1.0`
	)

Behaves like copy_sub_image(), except the copy pixels are multiplied to the pixels of the destination, after scaling by the specified pixel_scale.

Definition at line 2029 of file pfmFile.cxx.

References get_point1(), get_point2(), get_point3(), get_point4(), has_point(), modify_point2(), modify_point3(), modify_point4(), and set_point1().

◆ operator *=()

void PfmFile::operator *= ( float multiplier )

Multiplies every point value in the image by a constant floating-point multiplier value.

Definition at line 2174 of file pfmFile.cxx.

◆ pull_spot()

int PfmFile::pull_spot	(	const LPoint4f &	delta,
		float	xc,
		float	yc,
		float	xr,
		float	yr,
		float	exponent
	)

Applies delta * t to the point values within radius (xr, yr) distance of (xc, yc).

The t value is scaled from 1.0 at the center to 0.0 at radius (xr, yr), and this scale follows the specified exponent. Returns the number of points affected.

Definition at line 1610 of file pfmFile.cxx.

◆ quick_filter_from()

void PfmFile::quick_filter_from ( const PfmFile & from )

Resizes from the given image, with a fixed radius of 0.5.

This is a very specialized and simple algorithm that doesn't handle dropping below the Nyquist rate very well, but is quite a bit faster than the more general box_filter(), above.

Definition at line 998 of file pfmFile.cxx.

References PNMImageHeader::get_x_size(), and PNMImageHeader::get_y_size().

◆ read() [1/3]

bool PfmFile::read ( const Filename & fullpath )

Reads the PFM data from the indicated file, returning true on success, false on failure.

This can also handle reading a standard image file supported by PNMImage; it will be quietly converted to a floating-point type.

Definition at line 121 of file pfmFile.cxx.

Referenced by read().

◆ read() [2/3]

bool PfmFile::read	(	std::istream &	in,
		const Filename &	fullpath = `Filename()`
	)

Reads the PFM data from the indicated stream, returning true on success, false on failure.

This can also handle reading a standard image file supported by PNMImage; it will be quietly converted to a floating-point type.

Definition at line 153 of file pfmFile.cxx.

References clear(), PNMImageHeader::make_reader(), and read().

◆ read() [3/3]

bool PfmFile::read ( PNMReader * reader )

Reads the PFM data using the indicated PNMReader.

The PNMReader is always deleted upon completion, whether successful or not.

Definition at line 168 of file pfmFile.cxx.

References clear(), PNMReader::is_floating_point(), PNMReader::is_valid(), load(), PNMImage::read(), and PNMReader::read_pfm().

◆ resize()

void PfmFile::resize	(	int	new_x_size,
		int	new_y_size
	)

Applies a simple filter to resample the pfm file in-place to the indicated size.

Don't confuse this with applying a scale to all of the points via xform().

Definition at line 956 of file pfmFile.cxx.

References clear(), and fill().

Referenced by PfmTrans::process_pfm().

◆ reverse_distort()

void PfmFile::reverse_distort	(	const PfmFile &	dist,
		PN_float32	scale_factor = `1.0`
	)

Applies the distortion indicated in the supplied dist map to the current map.

The dist map is understood to be a mapping of points in the range 0..1 in the first two dimensions.

The operation can be expressed symbolically as:

this(u, v) = dist(this(u, v))

If scale_factor is not 1, it should be a value > 1, and it specifies the factor to upscale the working table while processing, to reduce artifacts from integer truncation.

By convention, the y axis in inverted in the distortion map relative to the coordinates here. A y value of 0 in the distortion map corresponds with a v value of 1 in this file.

Definition at line 1378 of file pfmFile.cxx.

◆ reverse_rows()

void PfmFile::reverse_rows ( )

Performs an in-place reversal of the row (y) data.

Definition at line 1146 of file pfmFile.cxx.

◆ set_channel()

void PfmFile::set_channel	(	int	x,
		int	y,
		int	c,
		PN_float32	value
	)

inline

Replaces the cth channel of the point value at the indicated point.

Definition at line 63 of file pfmFile.I.

Referenced by apply_1d_lut().

◆ set_no_data_chan4()

void PfmFile::set_no_data_chan4 ( bool chan4 )

inline

Sets the no_data_chan4 flag.

When this flag is true, and the pfm file has 4 channels, then a negative value in the fourth channel indicates no data. When it is false, all points are valid.

This is a special case of set_no_data_value().

Definition at line 387 of file pfmFile.I.

References clear_no_data_value().

◆ set_no_data_nan()

void PfmFile::set_no_data_nan ( int num_channels )

Sets the no_data_nan flag.

When num_channels is nonzero, then a NaN value in any of the first num_channels channels indicates no data for that point. If num_channels is zero, then all points are valid.

This is a special case of set_no_data_value().

Definition at line 858 of file pfmFile.cxx.

Referenced by PfmTrans::process_pfm().

◆ set_no_data_threshold() [1/2]

void PfmFile::set_no_data_threshold ( const LPoint4f & no_data_value )

Sets the special threshold value.

Points that are below this value in all components are considered "no value".

Definition at line 925 of file pfmFile.cxx.

Referenced by set_no_data_threshold().

◆ set_no_data_threshold() [2/2]

void PfmFile::set_no_data_threshold ( const LPoint4d & no_data_threshold )

inline

Sets the special threshold value.

Points that are below this value in all components are considered "no value".

Definition at line 412 of file pfmFile.I.

References set_no_data_threshold().

◆ set_no_data_value() [1/2]

void PfmFile::set_no_data_value ( const LPoint4f & no_data_value )

Sets the special value that means "no data" when it appears in the pfm file.

Definition at line 895 of file pfmFile.cxx.

Referenced by set_no_data_value(), and set_zero_special().

◆ set_no_data_value() [2/2]

void PfmFile::set_no_data_value ( const LPoint4d & no_data_value )

inline

Sets the special value that means "no data" when it appears in the pfm file.

Definition at line 403 of file pfmFile.I.

References set_no_data_value().

◆ set_point() [1/2]

void PfmFile::set_point	(	int	x,
		int	y,
		const LVecBase3f &	point
	)

inline

Replaces the 3-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 167 of file pfmFile.I.

References set_point3().

◆ set_point() [2/2]

void PfmFile::set_point	(	int	x,
		int	y,
		const LVecBase3d &	point
	)

inline

Replaces the 3-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 176 of file pfmFile.I.

References set_point3().

◆ set_point1()

void PfmFile::set_point1	(	int	x,
		int	y,
		PN_float32	point
	)

inline

Replaces the 1-component point value at the indicated point.

Definition at line 84 of file pfmFile.I.

Referenced by add_sub_image(), and mult_sub_image().

◆ set_point2() [1/2]

void PfmFile::set_point2	(	int	x,
		int	y,
		const LVecBase2f &	point
	)

inline

Replaces the 2-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 107 of file pfmFile.I.

Referenced by add_sub_image(), and set_point2().

◆ set_point2() [2/2]

void PfmFile::set_point2	(	int	x,
		int	y,
		const LVecBase2d &	point
	)

inline

Replaces the 2-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 135 of file pfmFile.I.

References set_point2().

◆ set_point3() [1/2]

void PfmFile::set_point3	(	int	x,
		int	y,
		const LVecBase3f &	point
	)

inline

Replaces the 3-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 204 of file pfmFile.I.

Referenced by add_sub_image(), set_point(), and set_point3().

◆ set_point3() [2/2]

void PfmFile::set_point3	(	int	x,
		int	y,
		const LVecBase3d &	point
	)

inline

Replaces the 3-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 232 of file pfmFile.I.

References set_point3().

◆ set_point4() [1/2]

void PfmFile::set_point4	(	int	x,
		int	y,
		const LVecBase4f &	point
	)

inline

Replaces the 4-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 266 of file pfmFile.I.

Referenced by add_sub_image(), and set_point4().

◆ set_point4() [2/2]

void PfmFile::set_point4	(	int	x,
		int	y,
		const LVecBase4d &	point
	)

inline

Replaces the 4-component point value at the indicated point.

In a 1-channel image, the channel value is in the x component.

Definition at line 294 of file pfmFile.I.

References set_point4().

◆ set_zero_special()

void PfmFile::set_zero_special ( bool zero_special )

inline

Sets the zero_special flag.

When this flag is true, values of (0, 0, 0) in the pfm file are treated as a special case, and are not processed.

This is a special case of set_no_data_value().

Definition at line 371 of file pfmFile.I.

References clear_no_data_value(), and set_no_data_value().

Referenced by PfmBba::process_pfm(), and PfmTrans::process_pfm().

◆ store()

bool PfmFile::store ( PNMImage & pnmimage ) const

Copies the data to the indicated PNMImage, converting to RGB values.

Definition at line 360 of file pfmFile.cxx.

References PNMImage::clear(), PNMImageHeader::get_num_channels, PNMImageHeader::get_x_size(), and PNMImageHeader::get_y_size().

Referenced by PNMImage::read(), and write().

◆ store_mask() [1/2]

bool PfmFile::store_mask ( PNMImage & pnmimage ) const

Stores 1 or 0 values into the indicated PNMImage, according to has_point() for each pixel.

Each valid point gets a 1 value; each nonexistent point gets a 0 value.

Definition at line 426 of file pfmFile.cxx.

References PNMImage::clear(), PNMImageHeader::get_x_size(), PNMImageHeader::get_y_size(), has_point(), and PNMImage::set_gray().

◆ store_mask() [2/2]

bool PfmFile::store_mask	(	PNMImage &	pnmimage,
		const LVecBase4f &	min_point,
		const LVecBase4f &	max_point
	)		const

Stores 1 or 0 values into the indicated PNMImage, according to has_point() for each pixel.

Each valid point gets a 1 value; each nonexistent point gets a 0 value.

This flavor of store_mask also checks whether the valid points are within the specified min/max range. Any valid points without the condition min_point[c] <= value[c] <= max_point[c], for any c, are stored with a 0 in the mask.

Definition at line 452 of file pfmFile.cxx.

References PNMImage::clear(), PNMImageHeader::get_x_size(), PNMImageHeader::get_y_size(), has_point(), and PNMImage::set_gray().

◆ swap_table()

void PfmFile::swap_table ( vector_float & table )

inline

This is a very low-level function that completely exchanges the PfmFile's internal table of floating-point numbers with whatever you supply.

The provided table must have an appropriate size. Use this method at your own risk.

Definition at line 549 of file pfmFile.I.

◆ write() [1/3]

bool PfmFile::write ( const Filename & fullpath )

Writes the PFM data to the indicated file, returning true on success, false on failure.

If the type implied by the filename extension supports floating-point, the data will be written directly; otherwise, the floating-point data will be quietly converted to the appropriate integer type.

Definition at line 204 of file pfmFile.cxx.

References Filename::open_write().

Referenced by write().

◆ write() [2/3]

bool PfmFile::write	(	std::ostream &	out,
		const Filename &	fullpath = `Filename()`
	)

Writes the PFM data to the indicated stream, returning true on success, false on failure.

Definition at line 232 of file pfmFile.cxx.

References PNMImageHeader::make_writer(), and write().

◆ write() [3/3]

bool PfmFile::write ( PNMWriter * writer )

Writes the PFM data using the indicated PNMWriter.

The PNMWriter is always deleted upon completion, whether successful or not.

Definition at line 251 of file pfmFile.cxx.

References PNMWriter::copy_header_from(), PNMImage::get_alpha_array(), PNMImage::get_array(), store(), PNMWriter::supports_floating_point(), PNMWriter::write_data(), and PNMWriter::write_pfm().

◆ xform() [1/2]

void PfmFile::xform ( const LMatrix4f & transform )

Applies the indicated transform matrix to all points in-place.

Definition at line 1222 of file pfmFile.cxx.

Referenced by xform().

◆ xform() [2/2]

void PfmFile::xform ( const LMatrix4d & transform )

inline

Applies the indicated transform matrix to all points in-place.

Definition at line 460 of file pfmFile.I.

References xform().

Member Data Documentation

◆ get_scale

PN_float32 PfmFile::get_scale

inline

The "scale" is reported in the pfm header and is probably meaningless.

Definition at line 57 of file pfmFile.h.

◆ set_scale

void PfmFile::set_scale

inline

The "scale" is reported in the pfm header and is probably meaningless.

Definition at line 57 of file pfmFile.h.

The documentation for this class was generated from the following files:

panda/src/pnmimage/pfmFile.h
panda/src/pnmimage/pfmFile.cxx
panda/src/pnmimage/pfmFile.I
panda/src/pnmimage/pnm-image-filter.cxx

Public Member Functions

Public Attributes

Friends

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ add_sub_image()

◆ apply_1d_lut()

◆ apply_crop()

◆ apply_exponent() [1/4]

◆ apply_exponent() [2/4]

◆ apply_exponent() [3/4]

◆ apply_exponent() [4/4]

◆ apply_mask()

◆ box_filter_from()

◆ calc_autocrop() [1/3]

◆ calc_autocrop() [2/3]

◆ calc_autocrop() [3/3]

◆ calc_average_point()

◆ calc_bilinear_point()

◆ calc_min_max()

◆ calc_tight_bounds()

◆ clear() [1/2]

◆ clear() [2/2]

◆ clear_no_data_value()

◆ clear_to_texcoords()

◆ copy_channel()

◆ copy_channel_masked()

◆ divide_sub_image()

◆ fill() [1/4]

◆ fill() [2/4]

◆ fill() [3/4]

◆ fill() [4/4]

◆ fill_channel()

◆ fill_channel_masked()

◆ fill_channel_masked_nan()

◆ fill_channel_nan()

◆ fill_nan()

◆ fill_no_data_value()

◆ flip()

◆ forward_distort()

◆ gamma_correct_alpha()

◆ gaussian_filter_from()

◆ get_channel()

◆ get_no_data_value()

◆ get_point()

◆ get_point1()

◆ get_point2()

◆ get_point3()

◆ get_point4()

◆ get_table()

◆ has_no_data_threshold()

◆ has_no_data_value()

◆ has_point()

◆ indirect_1d_lookup()

◆ is_column_empty()

◆ is_row_empty()

◆ load()

◆ merge()

◆ modify_point()

◆ modify_point2()

◆ modify_point3()

◆ modify_point4()

◆ mult_sub_image()

◆ operator *=()

◆ pull_spot()

◆ quick_filter_from()

◆ read() [1/3]

◆ read() [2/3]

◆ read() [3/3]

◆ resize()

◆ reverse_distort()

◆ reverse_rows()

◆ set_channel()

◆ set_no_data_chan4()

◆ set_no_data_nan()

◆ set_no_data_threshold() [1/2]

◆ set_no_data_threshold() [2/2]

◆ set_no_data_value() [1/2]

◆ set_no_data_value() [2/2]