bezierPatchMesh.cc File Reference

#include "gluos.h"
#include <assert.h>
#include "bezierEval.h"
#include "bezierPatchMesh.h"

Include dependency graph for bezierPatchMesh.cc:

Go to the source code of this file.

Functions
static int	isDegenerate (float A[2], float B[2], float C[2])
void	drawStrips (float *vertex_array, float *normal_array, int *length_array, GLenum *type_array, int num_strips)
void	bezierPatchMeshListDelDeg (bezierPatchMesh *list)
void	bezierPatchMeshListDelete (bezierPatchMesh *list)
bezierPatchMesh *	bezierPatchMeshListReverse (bezierPatchMesh *list)
bezierPatchMesh *	bezierPatchMeshMake (int maptype, float umin, float umax, int ustride, int uorder, float vmin, float vmax, int vstride, int vorder, float *ctlpoints, int size_UVarray, int size_length_array)
bezierPatchMesh *	bezierPatchMeshMake2 (int size_UVarray, int size_length_array)
void	bezierPatchMeshPutPatch (bezierPatchMesh *bpm, int maptype, float umin, float umax, int ustride, int uorder, float vmin, float vmax, int vstride, int vorder, float *ctlpoints)
void	bezierPatchMeshDelete (bezierPatchMesh *bpm)
void	bezierPatchMeshBeginStrip (bezierPatchMesh *bpm, GLenum type)
void	bezierPatchMeshEndStrip (bezierPatchMesh *bpm)
void	bezierPatchMeshInsertUV (bezierPatchMesh *bpm, float u, float v)
void	bezierPatchMeshPrint (bezierPatchMesh *bpm)
bezierPatchMesh *	bezierPatchMeshListInsert (bezierPatchMesh *list, bezierPatchMesh *bpm)
void	bezierPatchMeshListPrint (bezierPatchMesh *list)
int	bezierPatchMeshListTotalStrips (bezierPatchMesh *list)
int	bezierPatchMeshListTotalVert (bezierPatchMesh *list)
int	bezierPatchMeshListNumTriangles (bezierPatchMesh *list)
int	bezierPatchMeshNumTriangles (bezierPatchMesh *bpm)
void	bezierPatchMeshDelDeg (bezierPatchMesh *bpm)
void	bezierPatchMeshEval (bezierPatchMesh *bpm)
void	bezierPatchMeshListEval (bezierPatchMesh *list)
void	bezierPatchMeshDraw (bezierPatchMesh *bpm)
void	bezierPatchMeshListDraw (bezierPatchMesh *list)
void	bezierPatchMeshListCollect (bezierPatchMesh *list, float **vertex_array, float **normal_array, int **length_array, GLenum **type_array, int *num_strips)

Function Documentation

bezierPatchMeshBeginStrip()

void bezierPatchMeshBeginStrip	(	bezierPatchMesh *	bpm,
		GLenum	type
	)

Definition at line 245 of file bezierPatchMesh.cc.

{
  bpm->counter = 0;
  bpm->type = type;
}

Referenced by OpenGLSurfaceEvaluator::bgnclosedline(), OpenGLSurfaceEvaluator::bgnline(), OpenGLSurfaceEvaluator::bgnqstrip(), OpenGLSurfaceEvaluator::bgntfan(), OpenGLSurfaceEvaluator::bgntmesh(), and OpenGLSurfaceEvaluator::mapmesh2f().

bezierPatchMeshDelDeg()

void bezierPatchMeshDelDeg

(

bezierPatchMesh *

bpm

)

Definition at line 427 of file bezierPatchMesh.cc.

{
  if(bpm == NULL) return;
  int i,j,k;
  int *new_length_array;
  GLenum *new_type_array;
  int index_new_length_array;
  float *new_UVarray;
  int index_new_UVarray;
 
  new_length_array = (int*)malloc(sizeof(int) * bpm->index_length_array);
  assert(new_length_array);
  new_type_array = (GLenum*)malloc(sizeof(GLenum) * bpm->index_length_array);
  assert(new_length_array);
  new_UVarray = (float*) malloc(sizeof(float) * bpm->index_UVarray);
  assert(new_UVarray);
 
  index_new_length_array = 0;
  index_new_UVarray=0;
  k=0;
  for(i=0; i<bpm->index_length_array; i++){
    
    /*(if not degenerate, we have to copy*/
    if( (bpm->length_array[i] != 3) || (!isDegenerate(bpm->UVarray+k, bpm->UVarray+k+2, bpm->UVarray+k+4)))
      {
        for(j=0; j<2* bpm->length_array[i]; j++)
          new_UVarray[index_new_UVarray++] = bpm->UVarray[k++];
 
        new_length_array[index_new_length_array] = bpm->length_array[i];
        new_type_array[index_new_length_array] = bpm->type_array[i];
        index_new_length_array++;
      }
    else
      {
    k += 6;
      }
  }  
  free(bpm->UVarray);
  free(bpm->length_array);
  free(bpm->type_array);
  bpm->UVarray=new_UVarray;
  bpm->length_array=new_length_array;
  bpm->type_array=new_type_array;
  bpm->index_UVarray = index_new_UVarray;
  bpm->index_length_array = index_new_length_array;
  
}

Referenced by bezierPatchMeshListDelDeg().

bezierPatchMeshDelete()

void bezierPatchMeshDelete

(

bezierPatchMesh *

bpm

)

Definition at line 223 of file bezierPatchMesh.cc.

{
  if(bpm->bpatch != NULL)
    bezierPatchDelete(bpm->bpatch);
  if(bpm->bpatch_normal != NULL)
    bezierPatchDelete(bpm->bpatch_normal);
  if(bpm->bpatch_color != NULL)
    bezierPatchDelete(bpm->bpatch_color);
  if(bpm->bpatch_texcoord != NULL)
    bezierPatchDelete(bpm->bpatch_texcoord);
  
  free(bpm->UVarray);
  free(bpm->length_array);
  free(bpm->vertex_array);
  free(bpm->normal_array);
  free(bpm->type_array);
  free(bpm);
}

Referenced by bezierPatchMeshListDelete().

bezierPatchMeshDraw()

void bezierPatchMeshDraw

(

bezierPatchMesh *

bpm

)

Definition at line 524 of file bezierPatchMesh.cc.

{
  int i,j,k;
  k=0;
  /*k is the index of the first component of the current vertex*/
  for(i=0; i<bpm->index_length_array; i++)
    {
      glBegin(bpm->type_array[i]);
      for(j=0; j<bpm->length_array[i]; j++)
    {
      glNormal3fv(bpm->normal_array+k);
      glVertex3fv(bpm->vertex_array+k);
      k+= 3;
    }
      glEnd();
    }
}

Referenced by bezierPatchMeshListDraw().

bezierPatchMeshEndStrip()

void bezierPatchMeshEndStrip

(

bezierPatchMesh *

bpm

)

Definition at line 252 of file bezierPatchMesh.cc.

{
  int i;
  
  /*if there are no vertices in this strip, then nothing needs to be done*/
  if(bpm->counter == 0) return;
  
  /*if the length_array is full, it should be expanded*/
  if(bpm->index_length_array >= bpm->size_length_array)
    {
      int *temp = (int*) malloc(sizeof(int) * (bpm->size_length_array*2 + 1));
      assert(temp);
      GLenum *temp_type = (GLenum*) malloc(sizeof(GLenum) * (bpm->size_length_array*2 + 1));
      assert(temp_type);
      /*update the size*/
      bpm->size_length_array = bpm->size_length_array*2 + 1;
      
      /*copy*/
      for(i=0; i<bpm->index_length_array; i++)
    {
      temp[i] = bpm->length_array[i];
      temp_type[i] = bpm->type_array[i];
    }
      
      /*deallocate old array*/
      free(bpm->length_array);
      free(bpm->type_array);
      
      /*point to the new array which is twice as bigger*/
      bpm->length_array = temp;
      bpm->type_array = temp_type;
    }
  bpm->type_array[bpm->index_length_array] = bpm->type;
  bpm->length_array[bpm->index_length_array++] = bpm->counter;
 
}

Referenced by OpenGLSurfaceEvaluator::endclosedline(), OpenGLSurfaceEvaluator::endline(), OpenGLSurfaceEvaluator::endqstrip(), OpenGLSurfaceEvaluator::endtfan(), OpenGLSurfaceEvaluator::endtmesh(), and OpenGLSurfaceEvaluator::mapmesh2f().

bezierPatchMeshEval()

void bezierPatchMeshEval

(

bezierPatchMesh *

bpm

)

Definition at line 479 of file bezierPatchMesh.cc.

{
  int i,j,k,l;
  float u,v;
  float u0 = bpm->bpatch->umin;
  float u1 = bpm->bpatch->umax;
  int uorder = bpm->bpatch->uorder;
  float v0 = bpm->bpatch->vmin;
  float v1 = bpm->bpatch->vmax;
  int vorder = bpm->bpatch->vorder;
  int dimension = bpm->bpatch->dimension;
  int ustride = dimension * vorder;
  int vstride = dimension;
  float *ctlpoints = bpm->bpatch->ctlpoints;
  
  bpm->vertex_array = (float*) malloc(sizeof(float)* (bpm->index_UVarray/2) * 3);
  assert(bpm->vertex_array);
  bpm->normal_array = (float*) malloc(sizeof(float)* (bpm->index_UVarray/2) * 3);
  assert(bpm->normal_array);
 
  k=0;
  l=0;
  for(i=0; i<bpm->index_length_array; i++)
    {
      for(j=0; j<bpm->length_array[i]; j++)
    {
      u = bpm->UVarray[k];
      v = bpm->UVarray[k+1];
      bezierSurfEval(u0,u1,uorder, v0, v1, vorder, dimension, ctlpoints, ustride, vstride, u,v, bpm->vertex_array+l);
      bezierSurfEvalNormal(u0,u1,uorder, v0, v1, vorder, dimension, ctlpoints, ustride, vstride, u,v, bpm->normal_array+l);
      k += 2;
      l += 3;
    }
    }
}

Referenced by bezierPatchMeshListEval().

bezierPatchMeshInsertUV()

void bezierPatchMeshInsertUV	(	bezierPatchMesh *	bpm,
		float	u,
		float	v
	)

Definition at line 290 of file bezierPatchMesh.cc.

{
  int i;
  /*if the UVarray is full, it should be expanded*/
  if(bpm->index_UVarray+1 >= bpm->size_UVarray)
    {
      float *temp = (float*) malloc(sizeof(float) * (bpm->size_UVarray * 2 + 2));
      assert(temp);
      
      /*update the size*/
      bpm->size_UVarray = bpm->size_UVarray*2 + 2;
      
      /*copy*/
      for(i=0; i<bpm->index_UVarray; i++)
    {
      temp[i] = bpm->UVarray[i];
    }
      
      /*deallocate old array*/
      free(bpm->UVarray);
      
      /*pointing to the new arrays*/
      bpm->UVarray = temp;
    }
  /*insert the new UV*/
  bpm->UVarray[bpm->index_UVarray] = u;
  bpm->index_UVarray++;
  bpm->UVarray[bpm->index_UVarray] = v;
  bpm->index_UVarray++;
 
  /*update counter: one more vertex*/
  bpm->counter++;
 
 
}

Referenced by OpenGLSurfaceEvaluator::coord2f(), and OpenGLSurfaceEvaluator::mapmesh2f().

bezierPatchMeshListCollect()

void bezierPatchMeshListCollect	(	bezierPatchMesh *	list,
		float **	vertex_array,
		float **	normal_array,
		int **	length_array,
		GLenum **	type_array,
		int *	num_strips
	)

Definition at line 551 of file bezierPatchMesh.cc.

{
  int i,j,k,l;
  bezierPatchMesh *temp;
  int total_num_vertices = bezierPatchMeshListTotalVert(list);
  (*vertex_array) = (float *) malloc(sizeof(float) * total_num_vertices*3);
  assert(*vertex_array);
  (*normal_array) = (float *) malloc(sizeof(float) * total_num_vertices*3);
  assert(*normal_array);
 
  *num_strips = bezierPatchMeshListTotalStrips(list);
   
  *length_array = (int*) malloc(sizeof(int) * (*num_strips));
  assert(*length_array);
 
  *type_array = (GLenum*) malloc(sizeof(GLenum) * (*num_strips));
  assert(*type_array);
  
  k=0;
  l=0;
  for(temp = list; temp != NULL; temp = temp->next)
    {
      int x=0;
      for(i=0; i<temp->index_length_array; i++)
    {
      for(j=0; j<temp->length_array[i]; j++)
        {
          (*vertex_array)[k] = temp->vertex_array[x];
          (*vertex_array)[k+1] = temp->vertex_array[x+1];
          (*vertex_array)[k+2] = temp->vertex_array[x+2];
 
          (*normal_array)[k] = temp->normal_array[x];
          (*normal_array)[k+1] = temp->normal_array[x+1];
          (*normal_array)[k+2] = temp->normal_array[x+2];
 
          x += 3;
          k += 3;
        }
      (*type_array)[l]  = temp->type_array[i];
      (*length_array)[l++] = temp->length_array[i];
    }
    }
}

bezierPatchMeshListDelDeg()

void bezierPatchMeshListDelDeg

(

bezierPatchMesh *

list

)

Definition at line 66 of file bezierPatchMesh.cc.

{
  bezierPatchMesh* temp;
  for(temp=list; temp != NULL; temp = temp->next)
    {
      bezierPatchMeshDelDeg(temp);
    }
}

bezierPatchMeshListDelete()

void bezierPatchMeshListDelete

(

bezierPatchMesh *

list

)

Definition at line 75 of file bezierPatchMesh.cc.

{
  if(list == NULL) return;
  bezierPatchMeshListDelete(list->next);
  bezierPatchMeshDelete(list);  
}

Referenced by bezierPatchMeshListDelete(), OpenGLSurfaceEvaluator::bgnmap2f(), and OpenGLSurfaceEvaluator::endmap2f().

bezierPatchMeshListDraw()

void bezierPatchMeshListDraw

(

bezierPatchMesh *

list

)

Definition at line 542 of file bezierPatchMesh.cc.

{
  bezierPatchMesh* temp;
  for(temp = list; temp != NULL; temp = temp->next)
    {
      bezierPatchMeshDraw(temp);
    }
}

bezierPatchMeshListEval()

void bezierPatchMeshListEval

(

bezierPatchMesh *

list

)

Definition at line 515 of file bezierPatchMesh.cc.

{
  bezierPatchMesh* temp;
  for(temp = list; temp != NULL; temp = temp->next)
    {
      bezierPatchMeshEval(temp);
    }
}

bezierPatchMeshListInsert()

bezierPatchMesh * bezierPatchMeshListInsert	(	bezierPatchMesh *	list,
		bezierPatchMesh *	bpm
	)

Definition at line 347 of file bezierPatchMesh.cc.

{
  bpm->next=list;
  return bpm;
}

Referenced by bezierPatchMeshListReverse(), and OpenGLSurfaceEvaluator::map2f().

bezierPatchMeshListNumTriangles()

int bezierPatchMeshListNumTriangles

(

bezierPatchMesh *

list

)

Definition at line 385 of file bezierPatchMesh.cc.

{
  int sum=0;
  bezierPatchMesh* temp;
  for(temp=list; temp != NULL; temp = temp->next)
    {
      sum +=  bezierPatchMeshNumTriangles(temp);
    }
  return sum;
}

bezierPatchMeshListPrint()

void bezierPatchMeshListPrint

(

bezierPatchMesh *

list

)

Definition at line 354 of file bezierPatchMesh.cc.

{
  bezierPatchMesh *temp;
  for(temp = list; temp != NULL; temp = temp->next)
    {
      bezierPatchMeshPrint(temp);
    }
}

bezierPatchMeshListReverse()

bezierPatchMesh * bezierPatchMeshListReverse

(

bezierPatchMesh *

list

)

Definition at line 85 of file bezierPatchMesh.cc.

{
 bezierPatchMesh* ret=NULL;
 bezierPatchMesh* temp;
 bezierPatchMesh* nextone;
  for(temp = list; temp != NULL; temp = nextone)
    {
      nextone = temp->next;
      ret=bezierPatchMeshListInsert(ret, temp);
    }
 return ret;
}

bezierPatchMeshListTotalStrips()

int bezierPatchMeshListTotalStrips

(

bezierPatchMesh *

list

)

Definition at line 363 of file bezierPatchMesh.cc.

{
  int sum=0;
  bezierPatchMesh *temp;
  for(temp=list; temp != NULL; temp = temp->next)
    {
      sum += temp->index_length_array;
    }
  return sum;
}

Referenced by bezierPatchMeshListCollect().

bezierPatchMeshListTotalVert()

int bezierPatchMeshListTotalVert

(

bezierPatchMesh *

list

)

Definition at line 374 of file bezierPatchMesh.cc.

{
  int sum=0;
  bezierPatchMesh *temp;
  for(temp=list; temp != NULL; temp = temp->next)
    {
      sum += temp->index_UVarray;
    }
  return sum/2;
}

Referenced by bezierPatchMeshListCollect().

bezierPatchMeshMake()

bezierPatchMesh * bezierPatchMeshMake	(	int	maptype,
		float	umin,
		float	umax,
		int	ustride,
		int	uorder,
		float	vmin,
		float	vmax,
		int	vstride,
		int	vorder,
		float *	ctlpoints,
		int	size_UVarray,
		int	size_length_array
	)

Definition at line 100 of file bezierPatchMesh.cc.

{
  int i,j,k;
  int dimension;
  int the_ustride;
  int the_vstride;
 
  if(maptype == GL_MAP2_VERTEX_3) dimension = 3;
  else if (maptype==GL_MAP2_VERTEX_4) dimension = 4;
  else {
    fprintf(stderr, "error in inMap2f, maptype=%i is wrong, maptype,map is invalid\n", maptype);
    return NULL;
  }
 
  bezierPatchMesh *ret = (bezierPatchMesh*) malloc(sizeof(bezierPatchMesh));
  assert(ret);
 
  ret->bpatch_normal = NULL;
  ret->bpatch_color  = NULL;
  ret->bpatch_texcoord = NULL;
  ret->bpatch = bezierPatchMake(umin, vmin, umax, vmax, uorder, vorder, dimension);
 
  /*copy the control points there*/
  the_ustride = vorder * dimension;
  the_vstride = dimension;
  for(i=0; i<uorder; i++)
    for(j=0; j<vorder; j++)
      for(k=0; k<dimension; k++)
    ret->bpatch->ctlpoints[i * the_ustride + j*the_vstride+k] = ctlpoints[i*ustride+j*vstride+k];
  
 
  ret->size_UVarray = size_UVarray;
  ret->size_length_array = size_length_array;
  ret->UVarray = (float*) malloc(sizeof(float) * size_UVarray);
  assert(ret->UVarray);
  ret->length_array = (int *)malloc(sizeof(int) * size_length_array);
  assert(ret->length_array);
  ret->type_array = (GLenum *)malloc(sizeof(GLenum) * size_length_array);
  assert(ret->type_array);
 
  ret->index_UVarray = 0;
  ret->index_length_array = 0;
 
  ret->vertex_array = NULL;
  ret->normal_array = NULL;
  ret->color_array  = NULL;
  ret->texcoord_array = NULL;
 
  ret->next = NULL;
  return ret;
}

bezierPatchMeshMake2()

bezierPatchMesh * bezierPatchMeshMake2	(	int	size_UVarray,
		int	size_length_array
	)

Definition at line 152 of file bezierPatchMesh.cc.

{
  bezierPatchMesh *ret = (bezierPatchMesh*) malloc(sizeof(bezierPatchMesh));
  assert(ret);
 
  ret->bpatch = NULL;
  ret->bpatch_normal = NULL;
  ret->bpatch_color  = NULL;
  ret->bpatch_texcoord = NULL;
 
  ret->size_UVarray = size_UVarray;
  ret->size_length_array = size_length_array;
  ret->UVarray = (float*) malloc(sizeof(float) * size_UVarray);
  assert(ret->UVarray);
  ret->length_array = (int *)malloc(sizeof(int) * size_length_array);
  assert(ret->length_array);
  ret->type_array = (GLenum *)malloc(sizeof(GLenum) * size_length_array);
  assert(ret->type_array);
 
  ret->index_UVarray = 0;
  ret->index_length_array = 0;
 
  ret->vertex_array = NULL;
  ret->normal_array = NULL;
  ret->color_array  = NULL;
  ret->texcoord_array = NULL;
 
  ret->next = NULL;
  return ret;
}

Referenced by OpenGLSurfaceEvaluator::map2f().

bezierPatchMeshNumTriangles()

int bezierPatchMeshNumTriangles

(

bezierPatchMesh *

bpm

)

Definition at line 396 of file bezierPatchMesh.cc.

{
  int i;
  int sum=0;
  for(i=0; i<bpm->index_length_array; i++)
    {
      switch(bpm->type_array[i])
    {
    case GL_TRIANGLES:
      sum += bpm->length_array[i]/3;
      break;
    case GL_TRIANGLE_FAN:
      if(bpm->length_array[i] > 2)
        sum += bpm->length_array[i]-2;
      break;
    case GL_TRIANGLE_STRIP:
      if(bpm->length_array[i] > 2)
        sum += bpm->length_array[i]-2;
      break;
    case GL_QUAD_STRIP:
      if(bpm->length_array[i]>2)
        sum += (bpm->length_array[i]-2);
      break;
    default:
      fprintf(stderr,"error in bezierPatchMeshListNumTriangles, type invalid\n");
    }
    }
  return sum;
}

Referenced by bezierPatchMeshListNumTriangles().

bezierPatchMeshPrint()

void bezierPatchMeshPrint

(

bezierPatchMesh *

bpm

)

Definition at line 326 of file bezierPatchMesh.cc.

{
  int i;
  printf("the bezier patch is\n");
  bezierPatchPrint(bpm->bpatch);
  printf("index_length_array= %i\n", bpm->index_length_array);
  printf("size_length_array =%i\n", bpm->size_length_array);
  printf("index_UVarray =%i\n", bpm->index_UVarray);
  printf("size_UVarray =%i\n", bpm->size_UVarray);
  printf("UVarray is\n");
  for(i=0; i<bpm->index_UVarray; i++)
    printf("%f ", bpm->UVarray[i]);
 
  printf("length_array is\n");
  for(i=0; i<bpm->index_length_array; i++)
    printf("%i ", bpm->length_array[i]);
  printf("\n");
 
}

Referenced by bezierPatchMeshListPrint().

bezierPatchMeshPutPatch()

void bezierPatchMeshPutPatch	(	bezierPatchMesh *	bpm,
		int	maptype,
		float	umin,
		float	umax,
		int	ustride,
		int	uorder,
		float	vmin,
		float	vmax,
		int	vstride,
		int	vorder,
		float *	ctlpoints
	)

Definition at line 183 of file bezierPatchMesh.cc.

{
  switch(maptype){
  case GL_MAP2_VERTEX_3:
    bpm->bpatch = bezierPatchMake2(umin, vmin, umax, vmax, uorder, vorder, 3, ustride, vstride, ctlpoints);
    break;
  case GL_MAP2_VERTEX_4:
    bpm->bpatch = bezierPatchMake2(umin, vmin, umax, vmax, uorder, vorder, 4,ustride, vstride, ctlpoints );
    break;
  case GL_MAP2_NORMAL:
    bpm->bpatch_normal = bezierPatchMake2(umin, vmin, umax, vmax, uorder, vorder, 3, ustride, vstride, ctlpoints);
    break;
  case GL_MAP2_INDEX:
    bpm->bpatch_color = bezierPatchMake2(umin, vmin, umax, vmax, uorder, vorder, 1, ustride, vstride, ctlpoints);
    break;
  case GL_MAP2_COLOR_4:
    bpm->bpatch_color = bezierPatchMake2(umin, vmin, umax, vmax, uorder, vorder, 4, ustride, vstride, ctlpoints);
    break;
  case GL_MAP2_TEXTURE_COORD_1:
    bpm->bpatch_texcoord = bezierPatchMake2(umin, vmin, umax, vmax, uorder, vorder, 1, ustride, vstride, ctlpoints);
    break;
  case GL_MAP2_TEXTURE_COORD_2:
    bpm->bpatch_texcoord = bezierPatchMake2(umin, vmin, umax, vmax, uorder, vorder, 2, ustride, vstride, ctlpoints);
    break;    
  case GL_MAP2_TEXTURE_COORD_3:
    bpm->bpatch_texcoord = bezierPatchMake2(umin, vmin, umax, vmax, uorder, vorder, 3, ustride, vstride, ctlpoints);
    break;    
  case GL_MAP2_TEXTURE_COORD_4:
    bpm->bpatch_texcoord = bezierPatchMake2(umin, vmin, umax, vmax, uorder, vorder, 4, ustride, vstride, ctlpoints);
    break;    
  default:
    fprintf(stderr, "error in bezierPatchMeshPutPatch, maptype=%i is wrong, maptype,map is invalid\n", maptype);
  }
}

Referenced by OpenGLSurfaceEvaluator::map2f().

drawStrips()

void drawStrips	(	float *	vertex_array,
		float *	normal_array,
		int *	length_array,
		GLenum *	type_array,
		int	num_strips
	)

Definition at line 48 of file bezierPatchMesh.cc.

{
  int i,j,k;
  k=0;
  /*k is the index of the first component of the current vertex*/
  for(i=0; i<num_strips; i++)
    {
      glBegin(type_array[i]);
      for(j=0; j<length_array[i]; j++)
    {
      glNormal3fv(normal_array+k);
      glVertex3fv(vertex_array+k);
      k += 3;
    }
      glEnd();
    }
}

isDegenerate()

static int isDegenerate ( float  A[2], float  B[2], float  C[2]  )

static

Definition at line 597 of file bezierPatchMesh.cc.

{
  if( (A[0] == B[0] && A[1]==B[1]) ||
      (A[0] == C[0] && A[1]==C[1]) ||
      (B[0] == C[0] && B[1]==C[1])
     )
    return 1;
  else
    return 0;
}

Referenced by bezierPatchMeshDelDeg().