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Name

perspective()

Examples
example pic
// Re-creates the default perspective
size(100, 100, P3D);
noFill();
float fov = PI/3.0;
float cameraZ = (height/2.0) / tan(fov/2.0);
perspective(fov, float(width)/float(height), 
            cameraZ/10.0, cameraZ*10.0);
translate(50, 50, 0);
rotateX(-PI/6);
rotateY(PI/3);
box(45);
Description Sets a perspective projection applying foreshortening, making distant objects appear smaller than closer ones. The parameters define a viewing volume with the shape of truncated pyramid. Objects near to the front of the volume appear their actual size, while farther objects appear smaller. This projection simulates the perspective of the world more accurately than orthographic projection. The version of perspective without parameters sets the default perspective and the version with four parameters allows the programmer to set the area precisely. The default values are: perspective(PI/3.0, width/height, cameraZ/10.0, cameraZ*10.0) where cameraZ is ((height/2.0) / tan(PI*60.0/360.0));
Syntax
perspective()
perspective(fovy, aspect, zNear, zFar)
Parameters
fovy float: field-of-view angle (in radians) for vertical direction
aspect float: ratio of width to height
zNear float: z-position of nearest clipping plane
zFar float: z-position of farthest clipping plane
Returnsvoid
Updated on October 2, 2018 05:02:09pm EDT

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