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fg_geometry:

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- added a comment insisting on vertex+normal unicity,
- added 'GLsizei numVertIdxs' as a parameter,
- called 'fghDrawGeometrySolid' with:
  numVertices,numVertIdxs => nameCaps##_VERT_PER_OBJ,nameCaps##_VERT_PER_OBJ_TRI



git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1206 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
beuc 2012-03-24 19:57:54 +00:00
parent 972da1fe62
commit f0754e0273
1 changed files with 19 additions and 8 deletions
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25
freeglut/freeglut/src/fg_geometry.c
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@ -60,7 +60,17 @@ static void fghDrawGeometryWire(GLfloat *vertices, GLfloat *normals, GLsizei num
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
}
static void fghDrawGeometrySolid(GLfloat *vertices, GLfloat *normals, GLubyte *vertIdxs, GLsizei numVertices, GLsizei numEdgePerFace)
/**
* Draw the geometric shape with filled triangles
*
* - If the shape is naturally triangulated (numEdgePerFace==3), each
* vertex+normal pair is used only once, so no vertex indices.
*
* - If the shape was triangulated (DECOMPOSE_TO_TRIANGLE), some
* vertex+normal pairs are reused, so use vertex indices.
*/
static void fghDrawGeometrySolid(GLfloat *vertices, GLfloat *normals, GLubyte *vertIdxs,
GLsizei numVertices, GLsizei numVertIdxs, GLsizei numEdgePerFace)
{
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_NORMAL_ARRAY);
@ -70,8 +80,7 @@ static void fghDrawGeometrySolid(GLfloat *vertices, GLfloat *normals, GLubyte *v
if (numEdgePerFace==3)
glDrawArrays(GL_TRIANGLES, 0, numVertices);
else
/* The number of elements is passed as numVertices */
glDrawElements(GL_TRIANGLES, numVertices, GL_UNSIGNED_BYTE, vertIdxs);
glDrawElements(GL_TRIANGLES, numVertIdxs, GL_UNSIGNED_BYTE, vertIdxs);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
@ -641,7 +650,7 @@ static void fghCircleTable(GLfloat **sint, GLfloat **cost, const int n, const GL
else\
{\
fghDrawGeometrySolid(name##_verts,name##_norms,vertIdxs,\
nameCaps##_VERT_PER_OBJ_TRI, nameCaps##_NUM_EDGE_PER_FACE);\
nameCaps##_VERT_PER_OBJ, nameCaps##_VERT_PER_OBJ_TRI, nameCaps##_NUM_EDGE_PER_FACE); \
}\
}
#define DECLARE_INTERNAL_DRAW(name,nameICaps,nameCaps) _DECLARE_INTERNAL_DRAW_DO_DECLARE(name,nameICaps,nameCaps,NULL)
@ -678,9 +687,11 @@ static void fghCube( GLfloat dSize, GLboolean useWireMode )
vertices = cube_verts;
if (useWireMode)
fghDrawGeometryWire (vertices,cube_norms, CUBE_NUM_FACES,CUBE_NUM_EDGE_PER_FACE);
fghDrawGeometryWire (vertices, cube_norms,
CUBE_NUM_FACES, CUBE_NUM_EDGE_PER_FACE);
else
fghDrawGeometrySolid(vertices,cube_norms,cube_vertIdxs,CUBE_VERT_PER_OBJ_TRI, CUBE_NUM_EDGE_PER_FACE);
fghDrawGeometrySolid(vertices, cube_norms, cube_vertIdxs,
CUBE_VERT_PER_OBJ, CUBE_VERT_PER_OBJ_TRI, CUBE_NUM_EDGE_PER_FACE);
if (dSize!=1.f)
/* cleanup allocated memory */
@ -721,7 +732,7 @@ static void fghSierpinskiSponge ( int numLevels, double offset[3], GLfloat scale
if (useWireMode)
fghDrawGeometryWire (vertices,normals, numFace,TETRAHEDRON_NUM_EDGE_PER_FACE);
else
fghDrawGeometrySolid(vertices,normals,NULL,numVert, TETRAHEDRON_NUM_EDGE_PER_FACE);
fghDrawGeometrySolid(vertices,normals,NULL,numVert,numVert, TETRAHEDRON_NUM_EDGE_PER_FACE);
free(vertices);
free(normals );