Several Issues on Computer Graphics

From cognition aspect,the focus is on the discipline status of computer graphics.From carding of graphics and image generating,it comes towards the essence character of computer graphics,clear the fundamental task of computer graphics.From viewpoint of representation,it is comprehended that graphics and image are different only in display mode of picture elements.From visual angle of construction,it expatiates upon geometric quality of model,and nails down the status and function of computational geometry in computer graphics.From geometric modeling system instability caused by geometric singularity ultimately,computational geometry is grasped as the crux.From perspective of "computer graphics and modeling depend on mathematics operation of point and vector",taking geometry of vector as theory,taking directivity concept as foundation,it discovers basic theories of computational geometry,thinking method,geometric structure,geometric and complexity analysis.