73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
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/**********************************Module**********************************\
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*
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* geom.h
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*
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* 3D FlowerBox screen saver
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* Geometry header file
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*
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* History:
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* Wed Jul 19 14:50:27 1995 -by- Drew Bliss [drewb]
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* Created
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*
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* Copyright (c) 1995 Microsoft Corporation
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*
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\**************************************************************************/
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#ifndef __GEOM_H__
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#define __GEOM_H__
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// Geometry of a shape
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// A side of a shape
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typedef struct _SIDE
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{
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// Number of triangle strips in this side
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int nstrips;
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// Number of vertices per strip
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int *strip_size;
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// Indices for each point in the triangle strips
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unsigned int *strip_index;
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// The number of elements for glDrawElements call
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int num_eles;
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// Index buffer for glDrawElements
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GLuint *dBuf;
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} SIDE;
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typedef struct _GEOMETRY
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{
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void (*init)(struct _GEOMETRY *geom);
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// Number of sides
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int nsides;
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// Sides
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SIDE sides[MAXSIDES];
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// Data for each vertex in the shape
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PT3 *pts, *npts;
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PT3 *normals;
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// Total number of vertices
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int total_pts;
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// Scaling control
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FLT min_sf, max_sf, sf_inc;
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// Initial scale factor setup control
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FLT init_sf;
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} GEOMETRY;
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#define GEOM_CUBE 0
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#define GEOM_TETRA 1
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#define GEOM_PYRAMIDS 2
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extern GEOMETRY *geom_table[];
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void InitVlen(GEOMETRY *geom, int npts, PT3 *pts);
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void UpdatePts(GEOMETRY *geom, FLT sf);
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void DrawGeom(GEOMETRY *geom);
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extern void DrawWithVArrays (GEOMETRY *geom);
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#endif // __GEOM_H__
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