124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
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#define WFO_FAILURE FALSE
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#define WFO_SUCCESS TRUE
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#define PI 3.141592653589793
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#define TWO_PI 2.0*PI
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#define ZERO_EPS 0.00000001
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//#define VARRAY 1
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static const double CoplanarThresholdAngle = PI/180.0/2.0; // 0.5 degreees
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// outline prim types
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#define PRIM_LINE 3
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#define PRIM_CURVE 4
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typedef struct {
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FLOAT x,y;
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} POINT2D;
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typedef struct {
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FLOAT x,y,z;
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} POINT3D;
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typedef struct {
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DWORD primType;
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DWORD nVerts;
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DWORD VertIndex;// index into Loop's VertBuf
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POINT2D *pVert; // ptr to vertex list in Loop's VertBuf
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POINT3D *pFNorm; // face normals
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POINT3D *pVNorm; // vertex normals
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} PRIM;
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typedef struct {
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PRIM *PrimBuf; // array of prims
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DWORD nPrims;
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DWORD PrimBufSize;
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POINT2D *VertBuf; // buffer of vertices for the loop
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DWORD nVerts;
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DWORD VertBufSize;
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POINT3D *FNormBuf; // buffer of face normals
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POINT3D *VNormBuf; // buffer of vertex normals
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} LOOP;
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typedef struct {
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LOOP *LoopBuf; // array of loops
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DWORD nLoops;
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DWORD LoopBufSize;
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} LOOP_LIST;
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typedef struct {
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FLOAT zExtrusion;
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INT extrType;
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FLOAT* FaceBuf;
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DWORD FaceBufSize;
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DWORD FaceBufIndex;
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DWORD FaceVertexCountIndex;
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#ifdef VARRAY
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FLOAT* vaBuf;
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DWORD vaBufSize;
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#endif
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#ifdef FONT_DEBUG
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BOOL bSidePolys;
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BOOL bFacePolys;
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#endif
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GLenum TessErrorOccurred;
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} EXTRContext;
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// Memory pool for tesselation Combine callback
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#define POOL_SIZE 50
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typedef struct MEM_POOL MEM_POOL;
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struct MEM_POOL {
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int index; // next free space in pool
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POINT2D pool[POOL_SIZE]; // memory pool
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MEM_POOL *next; // next pool
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};
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typedef struct {
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GLenum TessErrorOccurred;
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FLOAT chordalDeviation;
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FLOAT scale;
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int format;
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UCHAR* glyphBuf;
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DWORD glyphSize;
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HFONT hfontOld;
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GLUtesselator* tess;
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MEM_POOL combinePool; // start of MEM_POOL chain
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MEM_POOL *curCombinePool; // currently active MEM_POOL
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EXTRContext *ec;
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} OFContext; // Outline Font Context
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extern EXTRContext* extr_Init( FLOAT extrusion,
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INT format );
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extern void extr_Finish( EXTRContext *ec );
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extern void extr_DrawLines( EXTRContext *ec,
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LOOP_LIST *pLoopList );
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extern BOOL extr_DrawPolygons( EXTRContext *ec,
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LOOP_LIST *pLoopList );
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#ifdef VARRAY
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extern void DrawFacePolygons( EXTRContext *ec,
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FLOAT z );
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#endif
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extern BOOL extr_PolyInit( EXTRContext *ec );
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extern void extr_PolyFinish( EXTRContext *ec );
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extern void CALLBACK extr_glBegin( GLenum primType,
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void *data );
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extern void CALLBACK extr_glVertex( GLfloat *v,
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void *data );
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extern void CALLBACK extr_glEnd( void );
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extern double CalcAngle( POINT2D *v1,
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POINT2D *v2 );
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