Screen Cordinates?

Graphics and GPU Programming Programming

Started by HPK August 23, 2002 11:14 PM

1 comment, last by HPK 21 years, 8 months ago

HPK

122

Author

August 23, 2002 11:14 PM

there is any way to use screen cordinates to draw the vertices in opengl?

Anonymous

August 24, 2002 12:08 AM

Use an orthographic projection matrix with 0,height as the bottom left and width,0 as the top right. Look up the glOrtho function.

zppz

226

August 24, 2002 06:08 AM

  void useWindowSizeOrthographicProjection(){    glMatrixMode(GL_PROJECTION);        glLoadIdentity();        gluOrtho2D(0, (GLfloat)windowWidth, 0, (GLfloat)windowHeight);    glMatrixMode(GL_MODELVIEW);}

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Screen Cordinates?

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