Hey all,
I'm having an awful time trying to get these triangle strips to show up.
Where am I going wrong?
InitGL:
InitGL()
{
glEnable(GL_DEPTH_TEST); // Enables Depth Testing
glDepthFunc(GL_LEQUAL);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();//
gluPerspective(45, //view angle
WINDOW_WIDTH/WINDOW_HEIGHT, //aspect ratio
1.0, //near clip
2000.0);//far clip
glMatrixMode(GL_MODELVIEW);
glClearColor(0, 0, 0, 0);
}
and Display:
void display ( void ) // Create The Display Function
{
int height = sourceImage->nx;
int width = sourceImage->ny;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glScalef(.005, .004, .005); //all vertices are in the range x[0,200], y[0,255], z[0,200]
glTranslatef(0, 0, -2); //so scale to put all vertices in the range [0,1] and move the z coord from [0,1] to the -z axis [-1,-2]
glColor3f(0, 0, 0);
glPushMatrix(); //save this view
float cell_height = 0;
for(float z = 0; z < width; z++)
{
glBegin(GL_TRIANGLE_STRIP);
for(float x = 0; x < height; x++)
{
cell_height = cellHeight(x, z);
glVertex3f(x, cell_height, z);
cell_height = cellHeight(x, z+1);
glVertex3f(x, cell_height,(z+1));
cell_height = cellHeight(x+1, z);
glVertex3f(x+1, cell_height, z);
cell_height = cellHeight(x+1, z+1);
glVertex3f(x+1, cell_height, (z+1));
}
glEnd();
}
glPopMatrix(); //restore view