1 files changed, 46 insertions, 0 deletions
diff --git a/utils/hacks/TreeGraphs/Graphics/Geometry/vec4.py b/utils/hacks/TreeGraphs/Graphics/Geometry/vec4.py
new file mode 100644
index 00000000..3a542272
--- /dev/null
+++ b/utils/hacks/TreeGraphs/Graphics/Geometry/vec4.py
@@ -0,0 +1,46 @@
+from __future__ import division
+from math import ceil,floor,sqrt
+import vec3
+_min,_max= min,max
+
+def inv(a):	return (-a[0], -a[1], -a[2], -a[3])
+
+def add(a,b):	return (a[0]+b[0], a[1]+b[1], a[2]+b[2], a[3]+b[3])
+def sub(a,b):	return (a[0]-b[0], a[1]-b[1], a[2]-b[2], a[3]-b[3])
+def mul(a,b):	return (a[0]*b[0], a[1]*b[1], a[2]*b[2], a[3]*b[3])
+def div(a,b):	return (a[0]/b[0], a[1]/b[1], a[2]/b[2], a[3]/b[3])
+def mod(a,b):	return (a[0]%b[0], a[1]%b[1], a[2]%b[2], a[3]%b[3])
+def dot(a,b):	return (a[0]*b[0]+ a[1]*b[1]+ a[2]*b[2]+ a[3]*b[3])
+
+def addN(a,n):	return (a[0]+n, a[1]+n, a[2]+n, a[3]+n)
+def subN(a,n):	return (a[0]-n, a[1]-n, a[2]-n, a[3]-n)
+def mulN(a,n):	return (a[0]*n, a[1]*n, a[2]*n, a[3]*n)
+def modN(a,n):	return (a[0]%n, a[1]%n, a[2]%n, a[3]%n)
+def divN(a,n):	return (a[0]/n, a[1]/n, a[2]/n, a[3]/n)
+
+def sqr(a):		return dot(a,a)
+def length(a):	return sqrt(sqr(a))
+def avg(a,b):	return mulN(add(a,b),0.5)
+def normalize(a):	return mulN(a, 1.0/length(a))
+
+def lerp(a,b,t):
+	return add(mulN(a,1.0-t), mulN(b, t))
+
+def min((a0,a1,a2,a3),(b0,b1,b2,b3)):
+	return (_min(a0,b0),_min(a1,b1),_min(a2,b2),_min(a3,b3))
+def max((a0,a1,a2,a3),(b0,b1,b2,b3)):
+	return (_max(a0,b0),_max(a1,b1),_max(a2,b2),_max(a3,b3))
+
+def toint(a):
+	return (int(a[0]), int(a[1]), int(a[2]), int(a[3]))
+def tofloor(a):
+	return (floor(a[0]), floor(a[1]), floor(a[2]), floor(a[3]))
+def toceil(a):
+	return (ceil(a[0]), ceil(a[1]), ceil(a[2]), ceil(a[3]))
+def tovec3(a):
+	return vec3.divN(a, a[3])
+
+def sumlist(l):
+	return reduce(add, l)
+def avglist(l):
+	return mulN(sumlist(l), 1.0/len(l))