/**
* Display callback. Draws the curves, points, and object
*/
void Display(void) {
// clear buffers
glClear(GL_COLOR_BUFFER_BIT);
DrawGround(); // draw the ground
// option to hide the controls
if (!hide) {
DrawControlPoints(); // draw all control points
DrawAnimationPoints(); // draw the path for animation
}
// which scene
if (scene1) {
DrawBall(); // draw the ball
} else {
DrawLamp(); // draw the pixar lamp
}
glutSwapBuffers();
}
void displayCallback()
{
if (showMap == 1) {
DrawParabolicMapWithCube();
} else if (showMap == 2) {
DrawParabolicMapWithSphere();
} else {
glEnable(GL_SCISSOR_TEST);
for (int view = 0; view < 4; view++)
{
SelectViewport(view, true);
if (view == ROTATE)
DrawSurface();
else
DrawFrame();
DrawGrid();
if (view != ROTATE)
DrawControlPoints();
}
glDisable(GL_SCISSOR_TEST);
if (saveScreens)
ScreenShot();
}
glutSwapBuffers();
}
void BEZIER::Visualize(bool wireframe, bool fill, VERTEX color)
{
if (!fill && !wireframe)
return;
//glPushAttrib(GL_ALL_ATTRIB_BITS);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
if (fill)
{
glColor4f(1,1,1,1);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
//glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
float trans = 0.25;
glColor4f(1,1,1,trans);
DrawSurf(SURFDRAW_VIS, trans);
glEnable(GL_DEPTH_TEST);
}
if (wireframe)
{
glDisable(GL_DEPTH_TEST);
glLineWidth(1.0);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
//glColor4f(.5,.6,.5,0.1);
DrawControlPoints(color.x, color.y, color.z, 0.5);
/*glEnable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
glLineWidth(2.0);
//glColor4f(color.x, color.y, color.z,1);
DrawControlPoints(color.x, color.y, color.z, 1);*/
}
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
//glPopAttrib();
glEnable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
}
