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2. Windows and Viewports. Window. Image Space. Viewport. Information outside. the viewport is. clipped away. Larry F. Hodges. (modified by Amos Johnson). 3. Terminology. World Coordinate System (Object Space) - Representation of an object measured in some physical units. Window - The rectangle defining the part of
The capability that show some part of object internal a specify window is called windowing and a rectangular region in a world coordinate system is called window. Before going into clipping, you should understand the differences between a window and a viewport. A Window is a rectangular region in the world coordinate
Brute force line clipping can be performed as follows: – Don't clip lines with both end-points within the window. – For lines with one end- point inside the window and one end-point outside, calculate the intersection point (using the equation of the line) and clip from this point out
TRANSFORMATIONS,. CLIPPING AND. PROJECTION. 5.1 Geometric transformations. Three-dimensional graphics aims at producing an image of 3D objects. The image is the projection of the virtual world onto the window. Two di erent types of projection are usually used in computer graphics, the parallel projection (if
Rectangular windows are easy to be mapped to computer screen using a transformation called 'window to viewport mapping' that is simply composed of translation, scaling and reflection transformations. The parameters of the rectangular clipping window are (xleft, ybottom) and (xright, ytop); the lower left and upper right.
A world-coordinate area selected for display is called a window. An area on a display device to which a window is mapped is called a viewport. The window defines what is to be viewed, the viewport defines where it is to be displayed. In computer graphics terminology, the term window originally referred to an area of a
Window-Viewport Transformation: The process of mapping from a window in world coordinates to a viewport in screen coordinates. (C) Doug Bowman, Virginia Tech, 2008. 5. Windows and Viewports. (World) Window. Screen Window. Viewport. Information outside the viewport is clipped away world coordinate system.
Viewing Transformations. ?The process of mapping from a world window. (world coordinates) to a viewport (screen coordinates) . world window. Viewport (Image Subspace). ?A rectangle on the raster graphics screen (or interface window) defining where the image will appear, usually the entire screen or interface window.
Computer Graphics. Lecture Notes. DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING. SHRI VISHNU ENGINEERING COLLEGE FOR WOMEN clipping. On the other hand, if both endpoints of a line lie entirely to one side of the window, the line must lie entirely outside of the window. It is trivially and needs to
Windowing and Clipping. window - an opening through which part of the outside world can be seen. What about the part of the real world that we cannot see? In computer graphics, this is eliminated through a technique called clipping. Essentially, we need to worry about clipping three different entities: 1) lines 2) polygons

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February 2018