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IAS2233_Lab02 - IAS 2233 COMPUTER GRAPHICS SEMESTER...

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IAS 2233 : COMPUTER GRAPHICS SEMESTER 3/2010/2011 LAB 02 1) Configure your OpenGL program 2) Modify below program so that it can spin in different angle and speeds. /* * double.cpp * This is a simple double buffered program. * Pressing the left mouse button rotates the rectangle. * Pressing the middle mouse button stops the rotation. */ #include <GL/glut.h> #include <stdlib.h> static GLfloat spin = 0.0; void display(void) { glClear(GL_COLOR_BUFFER_BIT); glPushMatrix(); glRotatef(spin, 0.0, 0.0, 1.0); glColor3f(1.0, 1.0, 1.0); glRectf(-25.0, -25.0, 25.0, 25.0); glPopMatrix(); glutSwapBuffers(); } void spinDisplay(void) { spin = spin + 2.0; if (spin > 360.0) spin = spin - 360.0; glutPostRedisplay(); } void init(void) { glClearColor (0.0, 0.0, 0.0, 0.0); glShadeModel (GL_FLAT); } void reshape(int w, int h) { glViewport (0, 0, (GLsizei) w, (GLsizei) h);
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glMatrixMode(GL_PROJECTION); glLoadIdentity();
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