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A* -------------------------------------------------------------------
B* This file contains source code for the PyMOL computer program
C* copyright 1998-2000 by Warren Lyford Delano of DeLano Scientific. 
D* -------------------------------------------------------------------
E* It is unlawful to modify or remove this copyright notice.
F* -------------------------------------------------------------------
G* Please see the accompanying LICENSE file for further information. 
H* -------------------------------------------------------------------
I* Additional authors of this source file include:
Z* -------------------------------------------------------------------
#ifndef _H_Ray
#define _H_Ray


#define cRayMaxBasis 10

typedef struct _CRayAntiThreadInfo CRayAntiThreadInfo;
typedef struct _CRayHashThreadInfo CRayHashThreadInfo;
typedef struct _CRayThreadInfo     CRayThreadInfo;

CRay *RayNew(PyMOLGlobals *G);
void RayFree(CRay *I);
void RayPrepare(CRay *I,float v0,float v1,float v2,
                float v3,float v4,float v5,float *mat,float *rotMat,
                float aspRat,int width, 
                float pixel_scale,int ortho,float pixel_ratio,
                float back_ratio, float magnified);
void RayRender(CRay *I,int width,int height,unsigned int *image,
               float front,float back,double timing,float angle,
               float fov,float *pos);
void RayRenderPOV(CRay *I,int width,int height,char **headerVLA,
                  char **charVLA,float front,float back,float fov,float angle);
void RayRenderVRML2(CRay *I,int width,int height,
                    char **vla_ptr,float front,float back,
                float fov, float angle, float z_corr);
void RayRenderObjMtl(CRay *I,int width,int height,char **objVLA_ptr,
                      char **mtlVLA_ptr,float front,float back,float fov,
                 float angle,float z_corr);
void RayRenderTest(CRay *I,int width,int height,float front,float back,float fov);
void RaySetTTT(CRay *I,int flag,float *ttt);
void RayGetTTT(CRay *I,float *ttt);
void RayPushTTT(CRay *I);
void RayPopTTT(CRay *I);
void RaySetContext(CRay *I,int context);
void RayApplyContexToNormal(CRay *I,float *v);
void RayApplyContextToVertex(CRay *I,float *v);
void RayRenderColorTable(CRay *I,int width,int height,int *image);
int RayTraceThread(CRayThreadInfo *T);
int RayGetNPrimitives(CRay *I);
void RayGetScaledAxes(CRay *I,float *xn,float *yn);

int RayHashThread(CRayHashThreadInfo *T);
int RayAntiThread(CRayAntiThreadInfo *T);

typedef struct {
  int op;
  int x1,y1,z1;
  int x2,y2,z2;
  int x3,y3,z3;
  int c;
  int r;
} G3dPrimitive;

G3dPrimitive *RayRenderG3d(CRay *I,int width, int height,float front,
                           float back, float fov,int quiet);

struct _CRay {
  void (*fSphere3fv)( CRay *ray,float *v,float r);
  void (*fCylinder3fv)( CRay *ray,float *v1,float *v2,float r,float *c1,float *c2);
  void (*fCustomCylinder3fv)( CRay *ray,float *v1,float *v2,float r,float *c1,
                             float *c2,int cap1,int cap2);
  void (*fSausage3fv)( CRay *ray,float *v1,float *v2,float r,float *c1,float *c2);
  void (*fColor3fv)( CRay *ray,float *c);
  void (*fTriangle3fv)( CRay *ray,
                                            float *v1,float *v2,float *v3,
                                            float *n1,float *n2,float *n3,
                                            float *c1,float *c2,float *c3);
  void (*fWobble)( CRay *ray,int mode,float *par);
  void (*fTransparentf)( CRay *ray,float t);
  void (*fCharacter)( CRay *ray,int char_id);
  void (*fInteriorColor3fv) (CRay *ray, float *v, int passive);

  /* everything below should be private */
  PyMOLGlobals *G;
  CPrimitive *Primitive;
  int NPrimitive;
  CBasis *Basis;
  int NBasis;
  int *Vert2Prim;
  float CurColor[3],IntColor[3];
  float ModelView[16];
  float Rotation[16];
  float Volume[6];
  float Range[3];
  int BigEndian;
  int Wobble;
  float WobbleParam[3];
  float Trans;
  float Random[256];
  int TTTFlag;
  float TTT[16];
  float *TTTStackVLA;
  int TTTStackDepth;
  int Context;
  int CheckInterior;
  float AspRatio;
  float PixelRadius;
  float min_box[3];
  float max_box[3];
  int Sampling;
  float PixelRatio;
  float Magnified; /* ray pixels to screen pixels */
  float FrontBackRatio;
  double PrimSize;
  int PrimSizeCnt;


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