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csPoly3D Class Reference The following class represents a general 3D polygon. More... #include <poly3d.h> Inheritance diagram for csPoly3D: List of all members. Public Methods   csPoly3D (int start_size=10)   Make a new empty polygon.   csPoly3D (const csPoly3D &copy)   Copy constructor. virtual  ~csPoly3D ()   Destructor. void  MakeEmpty ()   Initialize the polygon to empty. int  GetVertexCount () const   Get the number of vertices. csVector3*  GetVertices () const   Get the array with all vertices. csVector3*  GetVertex (int i) const   Get the specified vertex. csVector3&  operator[] (int i)   Get the specified vertex. csVector3&  operator[] (int i) const   Get the specified vertex. csVector3*  GetFirst () const   Get the first vertex. csVector3*  GetLast () const   Get the last vertex. bool  In (const csVector3 &v) const   Test if this vector is inside the polygon. void  MakeRoom (int new_max)   Make room for at least the specified number of vertices. void  SetVertexCount (int n)   Set the number of vertices. int  AddVertex (const csVector3 &v)   Add a vertex (3D) to the polygon. More... int  AddVertex (float x, float y, float z)   Add a vertex (3D) to the polygon. More... void  SetVertices (csVector3 const *v, int num)   Set all polygon vertices at once. More... bool  ProjectXPlane (const csVector3 &point, float plane_x, csPoly2D *poly2d) const   Project this polygon onto a X plane as seen from some point in space. More... bool  ProjectYPlane (const csVector3 &point, float plane_y, csPoly2D *poly2d) const   Project this polygon onto a Y plane as seen from some point in space. More... bool  ProjectZPlane (const csVector3 &point, float plane_z, csPoly2D *poly2d) const   Project this polygon onto a Z plane as seen from some point in space. More... bool  ProjectAxisPlane (const csVector3 &point, int plane_nr, float plane_pos, csPoly2D *poly2d) const   Project this polygon onto an axis-aligned plane as seen from some point in space. More... int  Classify (const csPlane3 &pl) const   Classify this polygon with regards to a plane. More... int  ClassifyX (float x) const   Same as Classify() but for X plane only. int  ClassifyY (float y) const   Same as Classify() but for Y plane only. int  ClassifyZ (float z) const   Same as Classify() but for Z plane only. void  CutToPlane (const csPlane3 &split_plane)   Cut this polygon with a plane and only keep the front side. void  SplitWithPlane (csPoly3D &front, csPoly3D &back, const csPlane3 &split_plane) const   Split this polygon with the given plane (A,B,C,D). void  SplitWithPlaneX (csPoly3D &front, csPoly3D &back, float x) const   Split this polygon to the x-plane. void  SplitWithPlaneY (csPoly3D &front, csPoly3D &back, float y) const   Split this polygon to the y-plane. void  SplitWithPlaneZ (csPoly3D &front, csPoly3D &back, float z) const   Split this polygon to the z-plane. csVector3  ComputeNormal () const   Compute the normal of this polygon. csPlane3  ComputePlane () const   Compute the plane of this polygon. float  GetSignedArea () const   Calculate the signed area of this polygon. csVector3  GetCenter () const   Compute and get the central vertex of this polygon. Static Public Methods bool  In (csVector3 *poly, int num_poly, const csVector3 &v)   Test if a vector is inside the given polygon. int  Classify (const csPlane3 &pl, csVector3 *vertices, int num_vertices)   Static function to classify a polygon with regards to a plane. More... csVector3  ComputeNormal (csVector3 *vertices, int num)   Compute the normal of a polygon. csPlane3  ComputePlane (csVector3 *vertices, int num)   Compute the plane of a polygon. Protected Attributes csVector3*  vertices   The 3D vertices. int  num_vertices int  max_vertices Detailed Description The following class represents a general 3D polygon. Member Function Documentation int csPoly3D::AddVertex ( float x, float y, float z )   Add a vertex (3D) to the polygon. Return index of added vertex. int csPoly3D::AddVertex ( const csVector3 & v ) [inline]   Add a vertex (3D) to the polygon. Return index of added vertex. int csPoly3D::Classify ( const csPlane3 & pl ) const [inline]   Classify this polygon with regards to a plane. If this poly is on same plane it returns CS_POL_SAME_PLANE. If this poly is completely in front of the given plane it returnes CS_POL_FRONT. If this poly is completely back of the given plane it returnes CS_POL_BACK. Otherwise it returns CS_POL_SPLIT_NEEDED. int csPoly3D::Classify ( const csPlane3 & pl, csVector3 * vertices, int num_vertices ) [static]   Static function to classify a polygon with regards to a plane. If this poly is on same plane it returns CS_POL_SAME_PLANE. If this poly is completely in front of the given plane it returnes CS_POL_FRONT. If this poly is completely back of the given plane it returnes CS_POL_BACK. Otherwise it returns CS_POL_SPLIT_NEEDED. bool csPoly3D::ProjectAxisPlane ( const csVector3 & point, int plane_nr, float plane_pos, csPoly2D * poly2d ) const [inline]   Project this polygon onto an axis-aligned plane as seen from some point in space. Fills the given 2D polygon with the projection on the plane. This function assumes that there actually is a projection. Plane_nr is 0 for the X plane, 1 for Y, and 2 for Z. bool csPoly3D::ProjectXPlane ( const csVector3 & point, float plane_x, csPoly2D * poly2d ) const   Project this polygon onto a X plane as seen from some point in space. Fills the given 2D polygon with the projection on the plane. This function assumes that there actually is a projection. If the polygon to project comes on the same plane as 'point' then it will return false (no valid projection). bool csPoly3D::ProjectYPlane ( const csVector3 & point, float plane_y, csPoly2D * poly2d ) const   Project this polygon onto a Y plane as seen from some point in space. Fills the given 2D polygon with the projection on the plane. This function assumes that there actually is a projection. If the polygon to project comes on the same plane as 'point' then it will return false (no valid projection). bool csPoly3D::ProjectZPlane ( const csVector3 & point, float plane_z, csPoly2D * poly2d ) const   Project this polygon onto a Z plane as seen from some point in space. Fills the given 2D polygon with the projection on the plane. This function assumes that there actually is a projection. If the polygon to project comes on the same plane as 'point' then it will return false (no valid projection). void csPoly3D::SetVertices ( csVector3 const * v, int num ) [inline]   Set all polygon vertices at once. Copies the array. The documentation for this class was generated from the following file: poly3d.h Generated for Crystal Space by doxygen 1.2.5 written by Dimitri van Heesch, ©1997-2000