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Shading - Polygon Rendering and Ray Tracing Methods
When one thing is under the exposure of light, so the rays of light are distributed over the surface and there the distribution of intensity pattern depends extremely on the shape of that thing. Here to represent that 3D scene on computer we want to do rendering, that is transforming the 3-D image into a 2-D image, and due to this rendering there is an option of loss of information like height, depth and so on, of an object in the scene. Therefore to preserve this takes different Illumination models into consideration, for saving the information embedded in 3-D scene and allow it not be lost whereas transforming it in to 2-D scene. Thus here we study in some detail the type of rendering techniques and shading.
Basic Approaches for Visible Surface Determination There are two basic approaches for visible-surface determination, as per if they deal along with their projected images or a
side-effect of scan-conversion
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Interrupts - Event driven devices Interrupts: An option to polling is the interrupt feature. The device sends an interrupt signal to the processor while an event happens. T
Horizontal Retrace - Hardware Primitives Horizontal retrace refers to the time an electron beam takes to traverse a scan line.Vertical retrace means the time taken by the elect
Modelling and Rendering a surface Common practice in modelling and rendering a surface is to approximate it by a polygonal surface. By a polygonal surface we mean a surface whi
Advantages and Deficiencies of Gourand Shading Advantages of Gourand Shading: this eliminates the intensity discontinuities related with the constant shading model. Defi
interactive picture-construction techniques
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