ftp.nice.ch/pub/next/graphics/3d/geomview.1.4.1.s.tar.gz#/Geomview/src/bin/crayola/common/crayQuad.c

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#include "geom.h"
#include "quadP.h"
#include "crayolaP.h"

static char msg[] = "crayQuad.c";

void *cray_quad_HasVColor(int sel, Geom *geom, va_list args);

void *cray_quad_UseVColor(int sel, Geom *geom, va_list args);

void *cray_quad_EliminateColor(int sel, Geom *geom, va_list args);

void *cray_quad_SetColorAll(int sel, Geom *geom, va_list args);
void *cray_quad_SetColorAt(int sel, Geom *geom, va_list args);
void *cray_quad_SetColorAtV(int sel, Geom *geom, va_list args);
void *cray_quad_SetColorAtF(int sel, Geom *geom, va_list args);

void *cray_quad_GetColorAt(int sel, Geom *geom, va_list args);
void *cray_quad_GetColorAtV(int sel, Geom *geom, va_list args);
void *cray_quad_GetColorAtF(int sel, Geom *geom, va_list args);

#define MAX_METHODS 12

static craySpecFunc methods[] = {
  "crayHasColor", cray_quad_HasVColor,
  "crayHasVColor", cray_quad_HasVColor,
  
  "crayCanUseVColor", crayTrue,
  
  "crayUseVColor", cray_quad_UseVColor,
  
  "crayEliminateColor", cray_quad_EliminateColor,
  
  "craySetColorAll", cray_quad_SetColorAll,
  "craySetColorAt", cray_quad_SetColorAt,
  "craySetColorAtV", cray_quad_SetColorAtV,
  "craySetColorAtF", cray_quad_SetColorAtF,
  
  "crayGetColorAt", cray_quad_GetColorAt,
  "crayGetColorAtV", cray_quad_GetColorAtV,
  "crayGetColorAtF", cray_quad_GetColorAtF
  };

cray_quad_init() {
  crayInitSpec(methods, MAX_METHODS, GeomClassLookup("quad"));
  return 0;
}

void *cray_quad_HasVColor(int sel, Geom *geom, va_list args) {
  Quad *q = (Quad *)geom;
  return (void *)(q->flag & QUAD_C);
}

void *cray_quad_UseVColor(int sel, Geom *geom, va_list args) {
  Quad *q = (Quad *)geom;
  ColorA *color;
  int i;

  if (crayHasVColor(geom, NULL)) return 0;
  color = va_arg(args, ColorA *);
  q->c = OOGLNewNE(QuadC, q->maxquad, msg);
  for (i = 0; i < q->maxquad; i++) 
    q->c[i][0] = q->c[i][1] = q->c[i][2] = q->c[i][3] = *color;
  q->flag |= QUAD_C;
  return (void *)geom;
}

void *cray_quad_EliminateColor(int sel, Geom *geom, va_list args) {
  Quad *q = (Quad *)geom;

  if (!crayHasVColor(geom, NULL)) return 0;
  OOGLFree(q->c);
  q->c = NULL;
  q->flag &= ~QUAD_C;
  return (void *)geom;
}

void *cray_quad_SetColorAll(int sel, Geom *geom, va_list args) {
  int i;
  Quad *q = (Quad *)geom;
  ColorA *color = va_arg(args, ColorA *);
  if (!crayHasColor(geom, NULL)) return NULL;
  for (i = 0; i < q->maxquad; i++) {
    q->c[i][0] = *color;
    q->c[i][1] = *color;
    q->c[i][2] = *color;
    q->c[i][3] = *color;
  }
  return (void *)geom;
}

void *cray_quad_SetColorAt(int sel, Geom *geom, va_list args) {
  ColorA *color;
  int vindex, findex;
  color = va_arg(args, ColorA *);
  vindex = va_arg(args, int);
  findex = va_arg(args, int);
  if (vindex != -1) 
    return (void *)craySetColorAtV(geom, color, vindex, NULL, NULL);
  return (void *)craySetColorAtF(geom, color, findex, NULL);
}

void *cray_quad_SetColorAtV(int sel, Geom *geom, va_list args) {
  Quad *q = (Quad *)geom;
  ColorA *color;
  int index;
  color = va_arg(args, ColorA *);
  index = va_arg(args, int);
  if (index == -1 || !crayHasVColor(geom, NULL)) return 0;
  q->c[0][index] = *color;
  return (void *)geom;
}


/*
 * Note - this is somewhat strangely written. Quad colors may be set
 * (and gotten) by vertex or by face, although they are always stored 
 * by vertex.
 */
void *cray_quad_SetColorAtF(int sel, Geom *geom, va_list args) {
  Quad *q = (Quad *)geom;
  ColorA *color;
  int index;
  color = va_arg(args, ColorA *);
  index = va_arg(args, int);
  if (index == -1 || !crayHasVColor(geom, NULL)) return 0;
  q->c[index][0] = q->c[index][1] = q->c[index][2] = 
    q->c[index][3] = *color;
  return (void *)geom;
}


void *cray_quad_GetColorAt(int sel, Geom *geom, va_list args) {
  Quad *q = (Quad *)geom;
  ColorA *color;
  int vindex, findex;

  color = va_arg(args, ColorA *);
  vindex = va_arg(args, int);
  findex = va_arg(args, int);
  if (!crayHasVColor(geom, NULL)) return 0;
  if (vindex != -1) 
    return (void *)crayGetColorAtV(geom, color, vindex, NULL, NULL);
  return (void *)crayGetColorAtF(geom, color, findex, NULL);
}

void *cray_quad_GetColorAtV(int sel, Geom *geom, va_list args) {
  Quad *q = (Quad *)geom;
  ColorA *color;
  int index;

  color = va_arg(args, ColorA *);
  index = va_arg(args, int);
  if (!crayHasVColor(geom, NULL) || index == -1) return 0;
  *color = q->c[0][index];
  return (void *)geom;
}

void *cray_quad_GetColorAtF(int sel, Geom *geom, va_list args) {
  Quad *q = (Quad *)geom;
  ColorA *color;
  int index;

  color = va_arg(args, ColorA *);
  index = va_arg(args, int);
  if (!crayHasVColor(geom, NULL) || index == -1) return 0;
  *color = q->c[index][0];
  return (void *)geom;
}

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