A single polygon. More...
#include "eggPolygon.h"
Inheritance diagram for EggPolygon:
Public Member Functions | |
| EggPolygon (const std::string &name="") | |
| EggPolygon (const EggPolygon ©) | |
| bool | calculate_normal (LNormald &result, CoordinateSystem cs=CS_default) const |
| Calculates the true polygon normal–the vector pointing out of the front of the polygon–based on the vertices. More... | |
| virtual bool | cleanup () override |
| Cleans up modeling errors in whatever context this makes sense. More... | |
| virtual TypeHandle | force_init_type () override |
| virtual TypeHandle | get_type () const override |
| bool | is_planar () const |
| Returns true if all of the polygon's vertices lie within the same plane, false otherwise. More... | |
| virtual EggPolygon * | make_copy () const override |
| Makes a copy of this object. More... | |
| EggPolygon & | operator= (const EggPolygon ©) |
| PT (EggPolygon) triangulate_in_place(bool convex_also) | |
| bool | recompute_polygon_normal (CoordinateSystem cs=CS_default) |
| Recalculates the normal according to the order of the vertices, and sets it. More... | |
| bool | triangulate_into (EggGroupNode *container, bool convex_also) const |
| Subdivides the polygon into triangles and adds each one to the indicated container. More... | |
| virtual void | write (std::ostream &out, int indent_level) const override |
| Writes the polygon to the indicated output stream in Egg format. More... | |
 Public Member Functions inherited from EggPrimitive | |
| EggPrimitive (const std::string &name="") | |
| EggPrimitive (const EggPrimitive ©) | |
| void | add_texture (EggTexture *texture) |
| Applies the indicated texture to the primitive. More... | |
| EggVertex * | add_vertex (EggVertex *vertex) |
| Adds the indicated vertex to the end of the primitive's list of vertices, and returns it. More... | |
| virtual void | apply_first_attribute () |
| Sets the first vertex of the triangle (or each component) to the primitive normal and/or color, if the primitive is flat-shaded. More... | |
| virtual void | apply_last_attribute () |
| Sets the last vertex of the triangle (or each component) to the primitive normal and/or color, if the primitive is flat-shaded. More... | |
| iterator | begin () const |
| void | clear () |
| Removes all of the vertices from the primitive. More... | |
| void | clear_connected_shading () |
| Resets the connected_shading member in this primitive, so that get_connected_shading() will recompute a new value. More... | |
| void | clear_material () |
| void | clear_texture () |
| Removes any texturing from the primitive. More... | |
| void | copy_attributes (const EggAttributes &other) |
| Copies the rendering attributes from the indicated primitive. More... | |
| void | copy_attributes (const EggPrimitive &other) |
| Copies the rendering attributes from the indicated primitive. More... | |
| void | copy_vertices (const EggPrimitive &other) |
| Replaces the current primitive's list of vertices with a copy of the list of vertices on the other primitive. More... | |
| virtual EggRenderMode * | determine_alpha_mode () |
| Walks back up the hierarchy, looking for an EggGroup or EggPrimitive or some such object at this level or above this primitive that has an alpha_mode other than AM_unspecified. More... | |
| virtual EggRenderMode * | determine_bin () |
| Walks back up the hierarchy, looking for an EggGroup or EggPrimitive or some such object at this level or above this primitive that has a bin specified. More... | |
| virtual EggRenderMode * | determine_depth_offset () |
| Walks back up the hierarchy, looking for an EggGroup or EggPrimitive or some such object at this level or above this primitive that has a depth_offset specified. More... | |
| virtual EggRenderMode * | determine_depth_test_mode () |
| Walks back up the hierarchy, looking for an EggGroup or EggPrimitive or some such object at this level or above this node that has a depth_test_mode other than DTM_unspecified. More... | |
| virtual EggRenderMode * | determine_depth_write_mode () |
| Walks back up the hierarchy, looking for an EggGroup or EggPrimitive or some such object at this level or above this node that has a depth_write_mode other than DWM_unspecified. More... | |
| virtual EggRenderMode * | determine_draw_order () |
| Walks back up the hierarchy, looking for an EggGroup or EggPrimitive or some such object at this level or above this primitive that has a draw_order specified. More... | |
| virtual EggRenderMode * | determine_visibility_mode () |
| Walks back up the hierarchy, looking for an EggGroup or EggPrimitive or some such object at this level or above this node that has a visibility_mode other than VM_unspecified. More... | |
| bool | empty () const |
| iterator | end () const |
| iterator | erase (iterator position) |
| iterator | erase (iterator first, iterator last) |
| Part of the implementaion of the EggPrimitive as an STL container. More... | |
| iterator | find (EggVertex *vertex) |
| Returns the iterator pointing to the indicated vertex, or end() if the vertex is not part of the primitive. More... | |
| bool | get_bface_flag () const |
| Shading | get_connected_shading () const |
| EggMaterial * | get_material () const |
| int | get_num_textures () const |
| size_t | get_num_vertices () const |
| EggVertexPool * | get_pool () const |
| virtual Shading | get_shading () const |
| std::string | get_sort_name () const |
| EggTexture * | get_texture () const |
| EggTexture * | get_texture (int n) const |
| EggVertex * | get_vertex (size_t index) const |
| bool | has_material () const |
| virtual bool | has_normals () const |
| Returns true if any of the primitives (e.g. More... | |
| virtual bool | has_primitives () const |
| Returns true if there are any primitives (e.g. More... | |
| bool | has_texture () const |
| Returns true if the primitive has any textures specified, false otherwise. More... | |
| bool | has_texture (EggTexture *texture) const |
| Returns true if the primitive has the particular indicated texture, false otherwise. More... | |
| bool | has_vertex_color () const |
| Returns true if any vertex on the primitive has a specific color set, false otherwise. More... | |
| bool | has_vertex_normal () const |
| Returns true if any vertex on the primitive has a specific normal set, false otherwise. More... | |
| iterator | insert (iterator position, EggVertex *x) |
| void | insert_vertex (size_t index, EggVertex *vertex) |
| virtual bool | joint_has_primitives () const |
| Returns true if there are any primitives (e.g. More... | |
| EggVertex * | operator [] (int index) const |
| This is read-only: you can't assign directly to an indexed vertex. More... | |
| EggPrimitive & | operator= (const EggPrimitive ©) |
| virtual void | post_apply_flat_attribute () |
| Intended as a followup to apply_last_attribute(), this also sets an attribute on the first vertices of the primitive, if they don't already have an attribute set, just so they end up with *something*. More... | |
| reverse_iterator | rbegin () const |
| void | remove_doubled_verts (bool closed) |
| Certain kinds of primitives, particularly polygons, don't like to have the same vertex repeated consecutively. More... | |
| void | remove_nonunique_verts () |
| Removes any multiple appearances of the same vertex from the primitive. More... | |
| EggVertex * | remove_vertex (EggVertex *vertex) |
| void | remove_vertex (size_t index) |
| reverse_iterator | rend () const |
| void | replace (iterator position, EggVertex *vertex) |
| Replaces the vertex at the indicated position with the indicated vertex. More... | |
| virtual void | reverse_vertex_ordering () |
| Reverses the ordering of the vertices in this primitive, if appropriate, in order to change the direction the polygon appears to be facing. More... | |
| void | set_bface_flag (bool flag) |
| void | set_material (EggMaterial *material) |
| void | set_texture (EggTexture *texture) |
| Replaces the current list of textures with the indicated texture. More... | |
| void | set_vertex (size_t index, EggVertex *vertex) |
| size_type | size () const |
| void | test_vref_integrity () const |
| virtual void | unify_attributes (Shading shading) |
| If the shading property is S_per_vertex, ensures that all vertices have a normal and a color, and the overall primitive does not. More... | |
| Public Member Functions inherited from EggNode | |
| EggNode (const std::string &name="") | |
| EggNode (const EggNode ©) | |
| void | apply_texmats () |
| Applies the texture matrices to the UV's of the vertices that reference them, and then removes the texture matrices from the textures themselves. More... | |
| virtual bool | determine_decal () |
| Walks back up the hierarchy, looking for an EggGroup at this level or above that has the "decal" flag set. More... | |
| virtual bool | determine_indexed () |
| Walks back up the hierarchy, looking for an EggGroup at this level or above that has the "indexed" scalar set. More... | |
| void | flatten_transforms () |
| Removes any transform and instance records from this node in the scene graph and below. More... | |
| int | get_depth () const |
| const LMatrix4d & | get_node_frame () const |
| Returns the coordinate frame of the node itself. More... | |
| const LMatrix4d & | get_node_frame_inv () const |
| Returns the inverse of the matrix returned by get_node_frame(). More... | |
| const LMatrix4d * | get_node_frame_inv_ptr () const |
| Returns either a NULL pointer or a unique pointer shared by nodes with the same get_node_frame_inv() matrix. More... | |
| const LMatrix4d * | get_node_frame_ptr () const |
| Returns either a NULL pointer or a unique pointer shared by nodes with the same get_node_frame() matrix. More... | |
| const LMatrix4d & | get_node_to_vertex () const |
| Returns the transformation matrix suitable for converting vertices in the coordinate space of the node to the appropriate coordinate space for storing in the egg file. More... | |
| const LMatrix4d * | get_node_to_vertex_ptr () const |
| Returns either a NULL pointer or a unique pointer shared by nodes with the same get_node_to_vertex() matrix. More... | |
| EggGroupNode * | get_parent () const |
| const LMatrix4d & | get_vertex_frame () const |
| Returns the coordinate frame of the vertices referenced by primitives at or under this node. More... | |
| const LMatrix4d & | get_vertex_frame_inv () const |
| Returns the inverse of the matrix returned by get_vertex_frame(). More... | |
| const LMatrix4d * | get_vertex_frame_inv_ptr () const |
| Returns either a NULL pointer or a unique pointer shared by nodes with the same get_vertex_frame_inv() matrix. More... | |
| const LMatrix4d * | get_vertex_frame_ptr () const |
| Returns either a NULL pointer or a unique pointer shared by nodes with the same get_vertex_frame() matrix. More... | |
| const LMatrix4d & | get_vertex_to_node () const |
| Returns the transformation matrix suitable for converting the vertices as read from the egg file into the coordinate space of the node. More... | |
| const LMatrix4d * | get_vertex_to_node_ptr () const |
| Returns either a NULL pointer or a unique pointer shared by nodes with the same get_vertex_to_node() matrix. More... | |
| virtual bool | is_anim_matrix () const |
| Returns true if this node represents a table of animation transformation data, false otherwise. More... | |
| virtual bool | is_joint () const |
| Returns true if this particular node represents a <Joint> entry or not. More... | |
| bool | is_local_coord () const |
| Returns true if this node's vertices are not in the global coordinate space. More... | |
| bool | is_under_instance () const |
| Returns true if there is an <Instance> node somewhere in the egg tree at or above this node, false otherwise. More... | |
| bool | is_under_transform () const |
| Returns true if there is a <Transform> entry somewhere in the egg tree at or above this node, false otherwise. More... | |
| EggNode & | operator= (const EggNode ©) |
| bool | parse_egg (const std::string &egg_syntax) |
| Parses the egg syntax given in the indicate string as if it had been read from the egg file within this object's definition. More... | |
| int | rename_node (vector_string strip_prefix) |
| Rename by stripping out the prefix. More... | |
| void | test_under_integrity () const |
| void | transform (const LMatrix4d &mat) |
| Applies the indicated transformation to the node and all of its descendants. More... | |
| void | transform_vertices_only (const LMatrix4d &mat) |
| Applies the indicated transformation only to vertices that appear in global space within vertex pools at this node and below. More... | |
| Public Member Functions inherited from EggNamedObject | |
| EggNamedObject (const std::string &name="") | |
| EggNamedObject (const EggNamedObject ©) | |
| EggNamedObject & | operator= (const EggNamedObject ©) |
| void | output (std::ostream &out) const |
| void | write_header (std::ostream &out, int indent_level, const char *egg_keyword) const |
| Writes the first line of the egg object, e.g. More... | |
| Public Member Functions inherited from EggObject | |
| EggObject (const EggObject ©) | |
| virtual EggTransform * | as_transform () |
| Returns this object cross-cast to an EggTransform pointer, if it inherits from EggTransform, or NULL if it does not. More... | |
| void | clear_user_data () |
| Removes *all* user data pointers from the node. More... | |
| void | clear_user_data (TypeHandle type) |
| Removes the user data pointer of the indicated type. More... | |
| EggUserData * | get_user_data () const |
| Returns the user data pointer most recently stored on this object, or NULL if nothing was previously stored. More... | |
| EggUserData * | get_user_data (TypeHandle type) const |
| Returns the user data pointer of the indicated type, if it exists, or NULL if it does not. More... | |
| bool | has_user_data () const |
| Returns true if a generic user data pointer has recently been set and not yet cleared, false otherwise. More... | |
| bool | has_user_data (TypeHandle type) const |
| Returns true if the user data pointer of the indicated type has been set, false otherwise. More... | |
| EggObject & | operator= (const EggObject ©) |
| void | set_user_data (EggUserData *user_data) |
| Sets the user data associated with this object. More... | |
| Public Member Functions inherited from TypedReferenceCount | |
| TypedReferenceCount (const TypedReferenceCount ©) | |
| void | operator= (const TypedReferenceCount ©) |
| Public Member Functions inherited from TypedObject | |
| TypedObject (const TypedObject ©)=default | |
| TypedObject * | as_typed_object () |
| Returns the object, upcast (if necessary) to a TypedObject pointer. More... | |
| const TypedObject * | as_typed_object () const |
| Returns the object, upcast (if necessary) to a TypedObject pointer. More... | |
| int | get_best_parent_from_Set (const std::set< int > &) const |
| int | get_type_index () const |
| Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. More... | |
| bool | is_exact_type (TypeHandle handle) const |
| Returns true if the current object is the indicated type exactly. More... | |
| bool | is_of_type (TypeHandle handle) const |
| Returns true if the current object is or derives from the indicated type. More... | |
| TypedObject & | operator= (const TypedObject ©)=default |
| Public Member Functions inherited from ReferenceCount | |
| int | get_ref_count () const |
| WeakReferenceList * | get_weak_list () const |
| Returns the WeakReferenceList associated with this ReferenceCount object. More... | |
| bool | has_weak_list () const |
| Returns true if this particular ReferenceCount object has a WeakReferenceList created, false otherwise. More... | |
| void | local_object () |
| This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack. More... | |
| void | ref () const |
| Explicitly increments the reference count. More... | |
| bool | ref_if_nonzero () const |
| Atomically increases the reference count of this object if it is not zero. More... | |
| bool | test_ref_count_integrity () const |
| Does some easy checks to make sure that the reference count isn't completely bogus. More... | |
| bool | test_ref_count_nonzero () const |
| Does some easy checks to make sure that the reference count isn't zero, or completely bogus. More... | |
| virtual bool | unref () const |
| Explicitly decrements the reference count. More... | |
| WeakReferenceList * | weak_ref () |
| Adds the indicated PointerToVoid as a weak reference to this object. More... | |
| void | weak_unref () |
| Removes the indicated PointerToVoid as a weak reference to this object. More... | |
| Public Member Functions inherited from Namable | |
| Namable (const std::string &initial_name="") | |
| void | clear_name () |
| Resets the Namable's name to empty. More... | |
| const std::string & | get_name () const |
| bool | has_name () const |
| Returns true if the Namable has a nonempty name set, false if the name is empty. More... | |
| void | output (std::ostream &out) const |
| Outputs the Namable. More... | |
| void | set_name (const std::string &name) |
| Public Member Functions inherited from EggAttributes | |
| EggAttributes (const EggAttributes ©) | |
| void | clear_color () |
| void | clear_normal () |
| int | compare_to (const EggAttributes &other) const |
| An ordering operator to compare two vertices for sorting order. More... | |
| void | copy_color (const EggAttributes &other) |
| Sets this color to be the same as the other's, include morphs. More... | |
| void | copy_normal (const EggAttributes &other) |
| Sets this normal to be the same as the other's, include morphs. More... | |
| LColor | get_color () const |
| Returns the color set on this particular attribute. More... | |
| const LNormald & | get_normal () const |
| bool | has_color () const |
| bool | has_normal () const |
| bool | matches_color (const EggAttributes &other) const |
| Returns true if this color matches that of the other EggAttributes object, include the morph list. More... | |
| bool | matches_normal (const EggAttributes &other) const |
| Returns true if this normal matches that of the other EggAttributes object, include the morph list. More... | |
| EggAttributes & | operator= (const EggAttributes ©) |
| void | set_color (const LColor &Color) |
| void | set_normal (const LNormald &normal) |
| bool | sorts_less_than (const EggAttributes &other) const |
| An ordering operator to compare two vertices for sorting order. More... | |
| void | transform (const LMatrix4d &mat) |
| Applies the indicated transformation matrix to the attributes. More... | |
| void | write (std::ostream &out, int indent_level) const |
| Writes the attributes to the indicated output stream in Egg format. More... | |
| Public Member Functions inherited from EggRenderMode | |
| EggRenderMode (const EggRenderMode ©) | |
| void | clear_bin () |
| Removes the bin name that was set for this particular object. More... | |
| void | clear_depth_offset () |
| Removes the depth-offset flag from this particular object. More... | |
| void | clear_draw_order () |
| Removes the draw-order flag from this particular object. More... | |
| AlphaMode | get_alpha_mode () const |
| Returns the alpha mode that was set, or AM_unspecified if nothing was set. More... | |
| std::string | get_bin () const |
| Returns the bin name that has been set for this particular object, if any. More... | |
| int | get_depth_offset () const |
| Returns the "depth-offset" flag as set for this particular object. More... | |
| DepthTestMode | get_depth_test_mode () const |
| Returns the depth_test mode that was set, or DTM_unspecified if nothing was set. More... | |
| DepthWriteMode | get_depth_write_mode () const |
| Returns the depth_write mode that was set, or DWM_unspecified if nothing was set. More... | |
| int | get_draw_order () const |
| Returns the "draw-order" flag as set for this particular object. More... | |
| VisibilityMode | get_visibility_mode () const |
| Returns the visibility mode that was set, or VM_unspecified if nothing was set. More... | |
| bool | has_bin () const |
| Returns true if a bin name has been set for this particular object. More... | |
| bool | has_depth_offset () const |
| Returns true if the depth-offset flag has been set for this particular object. More... | |
| bool | has_draw_order () const |
| Returns true if the draw-order flag has been set for this particular object. More... | |
| bool | operator != (const EggRenderMode &other) const |
| bool | operator< (const EggRenderMode &other) const |
| EggRenderMode & | operator= (const EggRenderMode ©) |
| bool | operator== (const EggRenderMode &other) const |
| void | set_alpha_mode (AlphaMode mode) |
| Specifies precisely how the transparency for this geometry should be achieved, or if it should be used. More... | |
| void | set_bin (const std::string &bin) |
| Sets the "bin" string for this particular object. More... | |
| void | set_depth_offset (int bias) |
| Sets the "depth-offset" flag associated with this object. More... | |
| void | set_depth_test_mode (DepthTestMode mode) |
| Specifies whether this geometry should be tested against the depth buffer when it is drawn (assuming the rendering backend provides a depth buffer). More... | |
| void | set_depth_write_mode (DepthWriteMode mode) |
| Specifies whether writes should be made to the depth buffer (assuming the rendering backend provides a depth buffer) when rendering this geometry. More... | |
| void | set_draw_order (int order) |
| Sets the "draw-order" flag associated with this object. More... | |
| void | set_visibility_mode (VisibilityMode mode) |
| Specifies whether this geometry is to be considered normally visible, or hidden. More... | |
| void | write (std::ostream &out, int indent_level) const |
| Writes the attributes to the indicated output stream in Egg format. More... | |
Static Public Member Functions | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from EggPrimitive | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from EggNode | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from EggNamedObject | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from EggObject | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from TypedReferenceCount | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from TypedObject | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| This function is declared non-inline to work around a compiler bug in g++ 2.96. More... | |
| Static Public Member Functions inherited from ReferenceCount | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from Namable | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from EggAttributes | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from EggRenderMode | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| static AlphaMode | string_alpha_mode (const std::string &string) |
| Returns the AlphaMode value associated with the given string representation, or AM_unspecified if the string does not match any known AlphaMode value. More... | |
| static DepthTestMode | string_depth_test_mode (const std::string &string) |
| Returns the DepthTestMode value associated with the given string representation, or DTM_unspecified if the string does not match any known DepthTestMode value. More... | |
| static DepthWriteMode | string_depth_write_mode (const std::string &string) |
| Returns the DepthWriteMode value associated with the given string representation, or DWM_unspecified if the string does not match any known DepthWriteMode value. More... | |
| static VisibilityMode | string_visibility_mode (const std::string &string) |
| Returns the HiddenMode value associated with the given string representation, or VM_unspecified if the string does not match any known HiddenMode value. More... | |
Additional Inherited Members | |
| Public Types inherited from EggPrimitive | |
| typedef Vertices::const_iterator | const_iterator |
| typedef Vertices::const_pointer | const_pointer |
| typedef Vertices::const_reference | const_reference |
| typedef Vertices::const_reverse_iterator | const_reverse_iterator |
| typedef Vertices::difference_type | difference_type |
| typedef Vertices::const_iterator | iterator |
| typedef Vertices::const_pointer | pointer |
| typedef Vertices::const_reference | reference |
| typedef Vertices::const_reverse_iterator | reverse_iterator |
| enum | Shading { S_unknown, S_overall, S_per_face, S_per_vertex } |
| typedef Vertices::size_type | size_type |
| Public Types inherited from EggRenderMode | |
| enum | AlphaMode { AM_unspecified, AM_off, AM_on, AM_blend, AM_blend_no_occlude, AM_ms, AM_ms_mask, AM_binary, AM_dual, AM_premultiplied } |
| enum | DepthTestMode { DTM_unspecified, DTM_off, DTM_on } |
| enum | DepthWriteMode { DWM_unspecified, DWM_off, DWM_on } |
| enum | VisibilityMode { VM_unspecified, VM_hidden, VM_normal } |
| Public Attributes inherited from EggPrimitive | |
| clear_material | |
| Removes any material from the primitive. More... | |
| get_bface_flag | |
| Retrieves the backfacing flag of the polygon. More... | |
| get_connected_shading | |
| Determines what sort of shading properties this primitive's connected neighbors have. More... | |
| get_material | |
| Returns a pointer to the applied material, or NULL if there is no material applied. More... | |
| get_num_textures | |
| Returns the number of textures applied to the primitive. More... | |
| get_num_vertices | |
| get_pool | |
| Returns the vertex pool associated with the vertices of the primitive, or NULL if the primitive has no vertices. More... | |
| get_shading | |
| Returns the shading properties apparent on this particular primitive. More... | |
| get_sort_name | |
| Returns the name of the primitive for the purposes of sorting primitives into different groups, if there is one. More... | |
| get_texture | |
| Returns the first texture on the primitive, if any, or NULL if there are no textures on the primitive. More... | |
| get_vertex | |
| Returns a particular index based on its index number. More... | |
| has_material | |
| Returns true if the primitive is materiald (and get_material() will return a real pointer), false otherwise (and get_material() will return NULL). More... | |
| insert_vertex | |
| Inserts a vertex at the given position. More... | |
| remove_vertex | |
| Removes the indicated vertex from the primitive and returns it. More... | |
| set_bface_flag | |
| Sets the backfacing flag of the polygon. More... | |
| set_material | |
| Applies the indicated material to the primitive. More... | |
| set_vertex | |
| Replaces a particular vertex based on its index number in the list of vertices. More... | |
| Public Attributes inherited from EggNode | |
| get_depth | |
| Returns the number of nodes above this node in the egg hierarchy. More... | |
| get_parent | |
| Public Attributes inherited from TypedObject | |
| get_type | |
| Public Attributes inherited from ReferenceCount | |
| get_ref_count | |
| Returns the current reference count. More... | |
| Public Attributes inherited from Namable | |
| get_name | |
| set_name | |
| Public Attributes inherited from EggAttributes | |
| EggMorphNormalList | _dnormals |
| EggMorphColorList | _drgbas |
Detailed Description
A single polygon.
Definition at line 24 of file eggPolygon.h.
Member Function Documentation
◆ calculate_normal()
| bool EggPolygon::calculate_normal | ( | LNormald & | result, |
| CoordinateSystem | cs = CS_default |
||
| ) | const |
Calculates the true polygon normal–the vector pointing out of the front of the polygon–based on the vertices.
This does not return or change the polygon's normal as set via set_normal().
The return value is true if the normal is computed correctly, or false if the polygon is degenerate and does not have at least three noncollinear vertices.
Definition at line 57 of file eggPolygon.cxx.
Referenced by cleanup(), and is_planar().
◆ cleanup()
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overridevirtual |
Cleans up modeling errors in whatever context this makes sense.
For instance, for a polygon, this calls remove_doubled_verts(true). For a point, it calls remove_nonunique_verts(). Returns true if the primitive is valid, or false if it is degenerate.
Reimplemented from EggPrimitive.
Definition at line 39 of file eggPolygon.cxx.
References calculate_normal(), and EggPrimitive::remove_doubled_verts().
◆ is_planar()
| bool EggPolygon::is_planar | ( | ) | const |
Returns true if all of the polygon's vertices lie within the same plane, false otherwise.
Definition at line 93 of file eggPolygon.cxx.
References calculate_normal().
◆ make_copy()
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overridevirtual |
◆ recompute_polygon_normal()
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inline |
Recalculates the normal according to the order of the vertices, and sets it.
Returns true if the normal is computed correctly, or false if the polygon is degenerate and does not have a normal.
Definition at line 43 of file eggPolygon.I.
◆ triangulate_into()
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inline |
Subdivides the polygon into triangles and adds each one to the indicated container.
If the polygon is already a triangle, adds an exact copy of the polygon to the container. Does not remove the polygon from its existing parent or modify it in any way.
Returns true if the triangulation is successful, or false if there was some error (in which case the container may contain some partial triangulation).
If convex_also is true, both concave and convex polygons will be subdivided into triangles; otherwise, only concave polygons will be subdivided, and convex polygons will be copied unchanged into the container.
Definition at line 67 of file eggPolygon.I.
◆ write()
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overridevirtual |
Writes the polygon to the indicated output stream in Egg format.
Implements EggPrimitive.
Definition at line 162 of file eggPolygon.cxx.
References indent(), and EggNamedObject::write_header().
The documentation for this class was generated from the following files:
- panda/src/egg/eggPolygon.h
- panda/src/egg/eggPolygon.cxx
- panda/src/egg/eggPolygon.I
