 | Code: - (void)drawView:(GLView*)view;
{
static GLfloat rot = 0.0;
// This is the same result as using Vertex3D, just faster to type and
// can be made const this way
static const Vertex3D vertices[]= {
{0, -0.525731, 0.850651}, // vertices[0]
{0.850651, 0, 0.525731}, // vertices[1]
{0.850651, 0, -0.525731}, // vertices[2]
{-0.850651, 0, -0.525731}, // vertices[3]
{-0.850651, 0, 0.525731}, // vertices[4]
{-0.525731, 0.850651, 0}, // vertices[5]
{0.525731, 0.850651, 0}, // vertices[6]
{0.525731, -0.850651, 0}, // vertices[7]
{-0.525731, -0.850651, 0}, // vertices[8]
{0, -0.525731, -0.850651}, // vertices[9]
{0, 0.525731, -0.850651}, // vertices[10]
{0, 0.525731, 0.850651} // vertices[11]
};
static const Color3D colors[] = {
{1.0, 0.0, 0.0, 1.0},
{1.0, 0.5, 0.0, 1.0},
{1.0, 1.0, 0.0, 1.0},
{0.5, 1.0, 0.0, 1.0},
{0.0, 1.0, 0.0, 1.0},
{0.0, 1.0, 0.5, 1.0},
{0.0, 1.0, 1.0, 1.0},
{0.0, 0.5, 1.0, 1.0},
{0.0, 0.0, 1.0, 1.0},
{0.5, 0.0, 1.0, 1.0},
{1.0, 0.0, 1.0, 1.0},
{1.0, 0.0, 0.5, 1.0}
};
static const GLubyte icosahedronFaces[] = {
1, 2, 6,
1, 7, 2,
3, 4, 5,
4, 3, 8,
6, 5, 11,
5, 6, 10,
9, 10, 2,
10, 9, 3,
7, 8, 9,
8, 7, 0,
11, 0, 1,
0, 11, 4,
6, 2, 10,
1, 6, 11,
3, 5, 10,
5, 4, 11,
2, 7, 9,
7, 1, 0,
3, 9, 8,
4, 8, 0,
};
static const Vector3D normals[] = {
{0.000000, -0.417775, 0.675974},
{0.675973, 0.000000, 0.417775},
{0.675973, -0.000000, -0.417775},
{-0.675973, 0.000000, -0.417775},
{-0.675973, -0.000000, 0.417775},
{-0.417775, 0.675974, 0.000000},
{0.417775, 0.675973, -0.000000},
{0.417775, -0.675974, 0.000000},
{-0.417775, -0.675974, 0.000000},
{0.000000, -0.417775, -0.675973},
{0.000000, 0.417775, -0.675974},
{0.000000, 0.417775, 0.675973},
};
glLoadIdentity();
glTranslatef(0.0f,0.0f,-3.0f);
glRotatef(rot,1.0f,1.0f,1.0f);
glClearColor(0.7, 0.7, 0.7, 1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_NORMAL_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, vertices);
glColorPointer(4, GL_FLOAT, 0, colors);
glNormalPointer(GL_FLOAT, 0, normals);
glDrawElements(GL_TRIANGLES, 60, GL_UNSIGNED_BYTE, icosahedronFaces);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
static NSTimeInterval lastDrawTime;
if (lastDrawTime)
{
NSTimeInterval timeSinceLastDraw = [NSDate timeIntervalSinceReferenceDate] - lastDrawTime;
rot+=50 * timeSinceLastDraw;
}
lastDrawTime = [NSDate timeIntervalSinceReferenceDate];
} | |
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