GetTriangleNormal
This function calculates a normal based on the positions of a triangle's vertices. This value will not necessarily be the same as the vertex normals, though the values are likely to be similar.
Syntax
- Vec3 GetTriangleNormal(number index)
Parameters
- index: the index of the triangle, from 0 to Surface::CountTriangles()-1.
Returns
Returns a normal describing the direction in which a triangle's face points.
Example
--Create a window
window = Window:Create()
context = Context:Create(window)
world = World:Create()
local camera = Camera:Create()
camera:SetRotation(35,0,0)
camera:Move(0,0,-3)
local light = DirectionalLight:Create()
light:SetRotation(35,35,0)
local model = Model:Box()
model:SetColor(0.0,0.0,1.0)
local surface = model:GetSurface(0)
--Print out the triangle normals
for t=0, surface:CountTriangles()-1 do
System:Print(surface:GetTriangleNormal(t))
end
while true do
if window:Closed() or window:KeyHit(Key.Escape) then return false end
Time:Update()
world:Update()
world:Render()
context:Sync()
end