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Function perspective

perspective(
    out: mat4,
    fovy: number,
    aspect: number,
    near: number,
    far: number,
): mat4
Generates a perspective projection matrix with the given bounds. The near/far clip planes correspond to a normalized device coordinate Z range of [-1, 1], which matches WebGL/OpenGL's clip volume. Passing null/undefined/no value for far will generate infinite projection matrix.
Parameters
- out: mat4
  mat4 frustum matrix will be written into
- fovy: number
  Vertical field of view in radians
- aspect: number
  Aspect ratio. typically viewport width/height
- near: number
  Near bound of the frustum
- far: number
  Far bound of the frustum, can be null or Infinity
Returns mat4
out