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For orthographic parallel projection:
glOrtho(left, right, bottom, top, near, far);
glOrtho2D(left, right, bottom, top);
Here left, right define the x-direction extents, bottom, top define y-direction extents and near, far define the z-direction extents of the view volume. gluOrtho2D is exactly like glOrtho, but with near = -1 and far = 1. That is, gluOrtho2D views points that have z-value between -1 and 1. Usually, gluOrtho2D is used when drawing two-dimensional figures that lie in the xy-plane, with z = 0.
Differentiate among interpolation spline and approximation spline? When the spline curve passes by all the control points then it is known as interpolate. When the curve is
what is the working procedure of CRT with diagram
Find the normalization transformation N, which uses the rectangle W(1, 1); X(5, 3); Y(4, 5) and Z(0, 3) as a window and the normalized deice screen as viewpoint.
Accessories : A Screen Grabber is a necessary accessory. Bitmap images are so common in multimedia, that it is important to have a tool for grabbing all or part of the screen disp
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Exceptional cases - Orthographic Projection 1) We have an Orthographic projection, if f=0, then cot (β) =0 that is β=90 0 . 2) β =cot-1 (1)=450 and this Oblique projec
explainapplication of coherence in visible surface detection method
What is meant by scan code? When a key is pressed on the keyboard, the keyboard controller places a code bear to the key pressed into a part of the memory known as the keyboard
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