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Used 3D rotation to calculate the normals.

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Quantum 2013-11-23 11:01:57 -05:00
parent 5435b594d4
commit 878db3658a
1 changed files with 12 additions and 14 deletions
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26
punyverse/glgeom.py
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@ -193,26 +193,24 @@ def normal_sphere(r, divide, tex, normal, lighting=True, fv4=GLfloat * 4):
t = theta / pi
v = min(int(t * height), height - 1)
x, y, z = normal[u, v]
nx, ny, nz = sin(theta) * cos(phi2), sin(theta) * sin(phi2), cos(theta)
#delta = normal[u, v] / 255.
#glNormal3f(nx + delta, ny + delta, nz + delta)
#glNormal3f(nx + x / 64., ny + y / 64., nz + z / 64.)
glNormal3f(nx + x / 128. - 1, ny + y / 128. - 1, nz + z / 128. - 1)
#glNormal3f(nx, ny, nz)
dx, dy, dz = sin(theta) * cos(phi2), sin(theta) * sin(phi2), cos(theta)
nx, ny, nz = x / 128. - 1, y / 128. - 1, z / 128. - 1
nx, nz = cos(theta) * nx + sin(theta) * nz, -sin(theta) * nx + cos(theta) * nz
nx, ny = cos(phi2) * nx - sin(phi2) * ny, sin(phi2) * nx + cos(phi2) * ny
glNormal3f(nx, ny, nz)
glTexCoord2f(s, 1 - t)
glVertex3f(r * nx, r * ny, r * nz)
glVertex3f(r * dx, r * dy, r * dz)
s = phi1 / TWOPI # x
u = min(int(s * width), width - 1)
x, y, z = normal[u, v]
nx, ny, nz = sin(theta) * cos(phi1), sin(theta) * sin(phi1), cos(theta)
#delta = normal[u, v] / 255.
#glNormal3f(nx + delta, ny + delta, nz + delta)
#glNormal3f(nx + x / 64., ny + y / 64., nz + z / 64.)
glNormal3f(nx + x / 128. - 1, ny + y / 128. - 1, nz + z / 128. - 1)
#glNormal3f(nx, ny, nz)
dx, dy, dz = sin(theta) * cos(phi1), sin(theta) * sin(phi1), cos(theta)
nx, ny, nz = x / 128. - 1, y / 128. - 1, z / 128. - 1
nx, nz = cos(theta) * nx + sin(theta) * nz, -sin(theta) * nx + cos(theta) * nz
nx, ny = cos(phi2) * nx - sin(phi2) * ny, sin(phi2) * nx + cos(phi2) * ny
glNormal3f(nx, ny, nz)
glTexCoord2f(s, 1 - t)
glVertex3f(r * nx, r * ny, r * nz)
glVertex3f(r * dx, r * dy, r * dz)
glEnd()
glDisable(GL_TEXTURE_2D)