Perspective Camera in TouchDesigner

PerspectiveCamera.py

# Perspective Projection
eps = 0.000001

def onSetupParameters(scriptOp):
	params = scriptOp.appendCustomPage('Parameters')

	params.appendFloat('Size', label='Perspective Size')
	params.appendFloat('Ratio', label='Aspect Ratio')
	params.appendFloat('N', label='Near')
	params.appendFloat('F', label='Far')

	return

def onCook(scriptOp):
	scriptOp.clear()

	size = scriptOp.par.Size
	ratio = scriptOp.par.Ratio
	n = scriptOp.par.N
	f = scriptOp.par.F

	m00 = n / (size + eps)
	m11 = n / (size*ratio + eps)
	m22 = -(f + n) / (f - n + eps)
	m23 = -2 * f * n / (f - n + eps)
	m32 = -1

	scriptOp.insertRow([m00, 0,   0,   0], 0)
	scriptOp.insertRow([0, m11,   0,   0], 1)
	scriptOp.insertRow([0,   0, m22, m23], 2)
	scriptOp.insertRow([0,   0, m32,   0], 3)
  
	return