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Annotation of mstools/samples/spincube/paint.h, revision 1.1.1.1

1.1       root        1: /******************************************************************************\
                      2: *
                      3: *                               MODULE: PAINT.H
                      4: *
                      5: \******************************************************************************/
                      6: 
                      7: 
                      8: 
                      9: /******************************************************************************\
                     10: *                             SYMBOLIC CONSTANTS
                     11: \******************************************************************************/
                     12: 
                     13: #define  NUMVERTICES  8 /* number of polyhedron vertices */
                     14: #define  NUMFACETS    6 /* number of polyhedron facets   */
                     15: 
                     16: #define  MAX_POINTS_PER_FACET 4
                     17: 
                     18: 
                     19: 
                     20: /******************************************************************************\
                     21: *                                  TYPEDEFs
                     22: \******************************************************************************/
                     23: 
                     24: typedef struct
                     25: {
                     26:   LONG x, y, z;
                     27: 
                     28: } POINT3D;
                     29: 
                     30: 
                     31: 
                     32: /******************************************************************************\
                     33: *                          GLOBAL VARIABLES
                     34: \******************************************************************************/
                     35: 
                     36: //
                     37: //  This particular set of vertices "gNormalizedVertices" and corresponding
                     38: //    facets "gaiFacets" describe a normalized cube centered about the
                     39: //    origin ([0,0,0] in 3-space). The gaiFacet array is made up of a series
                     40: //    of indices into the array of vertices, each describing an individual
                     41: //    facet (eg. a polygon), and are separated by -1. Note that the facets
                     42: //    are decribed in COUNTERCLOCKWISE (relative to the viewer) order so we
                     43: //    can consistently find the normal to any given facet. (The normal
                     44: //    is used to determine facet visibilty.)
                     45: //
                     46: 
                     47: static POINT3D gNormalizedVertices[NUMVERTICES] = {{ 1, 1, 1}, { 1,-1, 1},
                     48:                                                    {-1,-1, 1}, {-1, 1, 1},
                     49:                                                    { 1, 1,-1}, { 1,-1,-1},
                     50:                                                    {-1,-1,-1}, {-1, 1,-1}  };
                     51: 
                     52: 
                     53: static int gaiFacets[30] = { 3, 2, 1, 0, -1,
                     54:                              4, 5, 6, 7, -1,
                     55:                              0, 1, 5, 4, -1,
                     56:                              6, 2, 3, 7, -1,
                     57:                              7, 3, 0, 4, -1,
                     58:                              5, 1, 2, 6, -1  };
                     59: 
                     60: POINT3D gXformedVertices[NUMVERTICES];
                     61: 
                     62: float   gM[2][3]; /* the transformation matrix */
                     63: 
                     64: 
                     65: 
                     66: /******************************************************************************\
                     67: *                         FUNCTION PROTOTYPES
                     68: \******************************************************************************/
                     69: 
                     70: void TransformVertices (HWND, RECT *, PSPINCUBEINFO, LONG);
                     71: void ComputeRotationTransformation (float, float, float);

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