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Rectilinear Perspective by Graphic
The Ground Plane and Ground Line
Completing the Perspective View
10 other sections not shown
anamorphic angle angular appear artist axes calculated chapter circle computer graphics construction converge coordinate system curved surface curvilinear perspective cylindrical perspective defined diagonals direction numbers discussed distance distortion drawing edge elevation view ellipse example flat front function given graphic method grid lines ground plane height horizontal intersection limit point line segment M. C. Escher mathematical measured needed normal object oblique perspective obtained orientation parabola parallel lines perspective transformation perspective view picture plane pierce point plan and elevation plan view plotted point source position procedure projection radians radius ratio rectangle rectilinear perspective reflection result rotation scale seen shadow shape shown in figure shows side slope spective sphere spherical perspective square straight line subject matter symmetry technical drawing tilted tion tive triangle values vanishing point variable vertical viewer wide-angle width xy plane xyz system zero