TerrainDeformCrater - shape/approximation

[Cokemonkey11]

18:56 <Cokelounge> ^ two craters of r = 256, depth = -128 18:56 <Cokelounge> step size 8 18:57 <Cokelounge> starting at -256 - 16

^ step-size 4

^ step-size 2

Observations:

• GetTerrainZ() interpolates over adjacent heightmap datapoints
• No values are modified outside radius r
• Applying the same crater with the same parameters just hits the same heightmap values by the same magnitude - i.e. the heightmap is modified by a pure function of (x, y, r, depth)

Questions:

• [x] Are the interpolated values linear over their cell?
• [x] When duration parameter is set, how is the modification applied? linearly?
• [x] What is the cell size?
• [ ] How does the crater behave for radius and height values that are not divisible by the cell size? What about for x and y?