I need a code in c++ to do /* * render frontfaces to start raycasting */ void Re

Question

I need a code in c++ to do

/*

* render frontfaces to start raycasting

*/

void RenderFrontFaces( float dim_x, float dim_y, float dim_z )

{

enableRenderToBuffer( frontface_buffer );

  

// =============================================================

// TODO: render your backfaces here

// result gets piped to frontface_buffer automatically

// =============================================================

  

disableRenderToBuffer( );

}

Explanation / Answer

#include #include #include #include static GLfloat spin = 0.0; void init(void) { glClearColor (0.0, 0.0, 0.0, 0.0); glShadeModel (GL_FLAT); } 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 Renderfontfaces(float dim_x,float dim_y,float dim_z) { enableRenderToBuffer(frontface_buffer); spin = spin + 2.0; if (spin > 360.0) spin = spin - 360.0; glutPostRedisplay(); } void reshape(int w, int h) { glViewport (0, 0, (GLsizei) w, (GLsizei) h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(-50.0, 50.0, -50.0, 50.0, -1.0, 1.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } void mouse(int button, int state, int x, int y) { switch (button) { case GLUT_LEFT_BUTTON: if (state == GLUT_DOWN) glutIdleFunc(spinDisplay); break; case GLUT_MIDDLE_BUTTON: if (state == GLUT_DOWN) glutIdleFunc(NULL); break; default: break; } } int main(int argc, char** argv) { glutInit(&argc, argv); glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB); glutInitWindowSize (250, 250); glutInitWindowPosition (100, 100); glutCreateWindow (argv[0]); init (); glutDisplayFunc(display); glutReshapeFunc(reshape); glutMouseFunc(mouse); glutMainLoop(); return 0; }

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