Sha256: 68317b451df2ff44edb2cbbde3c764a0cfc9d09c1f4a51e71900e703b3ed194f
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Versions: 16
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Contents
# Move the mouse left and right to change the field of view (fov). # Click to modify the aspect ratio. The perspective method # 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. def setup size 640, 360, P3D no_stroke end def draw lights background 204 camera_y = height/2.0 fov = mouse_x/width.to_f * PI/2.0 camera_z = camera_y / tan(fov / 2.0) aspect = width.to_f / height.to_f aspect /= 2.0 if mouse_pressed? perspective(fov, aspect, camera_z/10.0, camera_z*10.0) translate width/2.0+30, height/2.0, 0 rotate_x -PI/6 rotate_y PI/3 + mouse_y/height.to_f * PI box 45 translate 0, 0, -50 box 30 end
Version data entries
16 entries across 16 versions & 1 rubygems