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https://github.com/bulletphysics/bullet3
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59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
import math
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NUM_VERTS_X = 30
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NUM_VERTS_Y = 30
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totalVerts = NUM_VERTS_X * NUM_VERTS_Y
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totalTriangles = 2 * (NUM_VERTS_X - 1) * (NUM_VERTS_Y - 1)
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offset = -50.0
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TRIANGLE_SIZE = 1.
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waveheight = 0.1
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gGroundVertices = [None] * totalVerts * 3
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gGroundIndices = [None] * totalTriangles * 3
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i = 0
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for i in range(NUM_VERTS_X):
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for j in range(NUM_VERTS_Y):
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gGroundVertices[(i + j * NUM_VERTS_X) * 3 + 0] = (i - NUM_VERTS_X * 0.5) * TRIANGLE_SIZE
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gGroundVertices[(i + j * NUM_VERTS_X) * 3 + 1] = (j - NUM_VERTS_Y * 0.5) * TRIANGLE_SIZE
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gGroundVertices[(i + j * NUM_VERTS_X) * 3 +
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2] = waveheight * math.sin(float(i)) * math.cos(float(j) + offset)
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index = 0
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for i in range(NUM_VERTS_X - 1):
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for j in range(NUM_VERTS_Y - 1):
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gGroundIndices[index] = 1 + j * NUM_VERTS_X + i
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index += 1
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gGroundIndices[index] = 1 + j * NUM_VERTS_X + i + 1
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index += 1
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gGroundIndices[index] = 1 + (j + 1) * NUM_VERTS_X + i + 1
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index += 1
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gGroundIndices[index] = 1 + j * NUM_VERTS_X + i
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index += 1
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gGroundIndices[index] = 1 + (j + 1) * NUM_VERTS_X + i + 1
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index += 1
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gGroundIndices[index] = 1 + (j + 1) * NUM_VERTS_X + i
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index += 1
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#print(gGroundVertices)
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#print(gGroundIndices)
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print("o Terrain")
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for i in range(totalVerts):
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print("v "),
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print(gGroundVertices[i * 3 + 0]),
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print(" "),
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print(gGroundVertices[i * 3 + 1]),
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print(" "),
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print(gGroundVertices[i * 3 + 2])
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for i in range(totalTriangles):
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print("f "),
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print(gGroundIndices[i * 3 + 0]),
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print(" "),
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print(gGroundIndices[i * 3 + 1]),
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print(" "),
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print(gGroundIndices[i * 3 + 2]),
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print(" ")
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