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Annotation of src/3d.h, revision 1.1.1.1

1.1       root        1: /* Simple 3D graphics routines */
                      2: 
                      3: /* Written by Bernie Roehl, November 1994 for VictorMaxx Technologies */
                      4: 
                      5: /* Redistribute at will, but charge nothing */
                      6: 
                      7: typedef struct { float x, y, z; } Vector;
                      8: 
                      9: typedef float Matrix[3][3];
                     10: 
                     11: typedef struct
                     12:        {
                     13:        int start;    /* index into vertex array of start of edge */
                     14:        int end;      /* index into vertex array of end of edge */
                     15:        int color;    /* color to draw this edge in */
                     16:        } Edge;
                     17: 
                     18: typedef struct
                     19:        {
                     20:        Vector location;      /* location of object in the world */
                     21:        Matrix orientation;   /* orientation matrix for the object */
                     22:        int nvertices;        /* number of vertices in the object */
                     23:        Vector *vertices;     /* array of vertices */
                     24:        int nedges;           /* number of edges in the object */
                     25:        Edge *edges;          /* array of edges */
                     26:        } Object;
                     27: 
                     28: /* Math routines */
                     29: 
                     30: void BuildTrigTables(void);  /* called once at start of application */
                     31: float sine(int angle);
                     32: float cosine(int angle);
                     33: 
                     34: /* Vector operations */
                     35: 
                     36: void VectorAdd(Vector *result, Vector *a, Vector *b);
                     37: void VectorSubtract(Vector *result, Vector *a, Vector *b);
                     38: void VectorRotate(Vector *result, Matrix rotmat, Vector *v);
                     39: 
                     40: /* Matrix operations */
                     41: 
                     42: void MatrixIdentity(Matrix result);
                     43: void MatrixMultiply(Matrix result, Matrix a, Matrix b);
                     44: void MatrixMakeXrot(Matrix result, int angle);
                     45: void MatrixMakeYrot(Matrix result, int angle);
                     46: void MatrixMakeZrot(Matrix result, int angle);
                     47: 
                     48: /* Low-level screen operations */
                     49: 
                     50: int DisplayInitialize(int ntsc);
                     51: void DisplayUninitialize(void);
                     52: void DisplayClear(int color);
                     53: void DisplayLine(int x1, int y1, int x2, int y2, int color);
                     54: void DisplayCopyLine(unsigned char far *data, unsigned int line, int length);
                     55: void DisplaySetPalette(unsigned char *palette);
                     56: void DisplayUpdate(void);
                     57: void DisplaySetEye(int eye);  /* eye is zero for left, non-zero for right */
                     58: extern int DisplayWidth, DisplayHeight;
                     59: 
                     60: /* CTM support */
                     61: 
                     62: int CTM_initialize(int port);
                     63: void CTM_uninitialize(void);
                     64: void CTM_read(int *yaw, int *pitch, int *roll);
                     65: void CTM_float_read(float *yaw, float *pitch, float *roll);
                     66: 
                     67: /* Renderer */
                     68: 
                     69: void Render(Object *object, Matrix eye_matrix, float eye_offset, int x_shift);
                     70: void RenderSetZoom(float value);
                     71: 
                     72: /* End of 3d.h */

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