Quad
defines a four sided, two dimensional shape. The local height of the Quad
defines it's size about the y-axis, while the width defines the x-axis. The z-axis will always be 0.
Quad
represents a rectangular plane in space defined by 4 vertices. The quad's lower-left side is contained at the local space origin (0, 0, 0), while the upper-right side is located at the width/height coordinates (width, height, 0).
@author Kirill Vainer
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