def test_nurbs_raw(self):
"""Test nurbs rendering using raw API calls"""
from OpenGL.raw import GLU as GLU_raw
knots = (GLfloat * 8)(0, 0, 0, 0, 1, 1, 1, 1)
ctlpoints = (GLfloat * (3 * 4 * 4))(
-3., -3., -3., -3., -1., -3., -3., 1., -3., -3., 3., -3., -1., -3.,
-3., -1., -1., 3., -1., 1., 3., -1., 3., -3., 1., -3., -3., 1.,
-1., 3., 1., 1., 3., 1., 3., -3., 3., -3., -3., 3., -1., -3., 3.,
1., -3., 3., 3., -3.)
theNurb = GLU_raw.gluNewNurbsRenderer()
GLU_raw.gluBeginSurface(theNurb)
GLU_raw.gluNurbsSurface(theNurb, 8, ctypes.byref(knots), 8,
ctypes.byref(knots), 4 * 3, 3,
ctypes.byref(ctlpoints), 4, 4,
GL_MAP2_VERTEX_3)
GLU_raw.gluEndSurface(theNurb)
def test_nurbs_raw_arrays(self):
"""Test nurbs rendering using raw API calls with arrays"""
from OpenGL.raw import GLU as GLU_raw
knots = np.array((0, 0, 0, 0, 1, 1, 1, 1), "f")
ctlpoints = np.array(
[[[-3., -3., -3.], [-3., -1., -3.], [-3., 1., -3.],
[-3., 3., -3.]],
[[-1., -3., -3.], [-1., -1., 3.], [-1., 1., 3.],
[-1., 3., -3.]],
[[1., -3., -3.], [1., -1., 3.], [1., 1., 3.], [1., 3., -3.]],
[[3., -3., -3.], [3., -1., -3.], [3., 1., -3.], [3., 3., -3.]]
], "f")
theNurb = GLU_raw.gluNewNurbsRenderer()
GLU_raw.gluBeginSurface(theNurb)
GLU_raw.gluNurbsSurface(theNurb, 8, knots, 8, knots, 4 * 3, 3,
ctlpoints, 4, 4, GL_MAP2_VERTEX_3)
GLU_raw.gluEndSurface(theNurb)
def main():
glutInit(sys.argv)
glutCreateWindow("molehill")
glMaterialfv(GL_FRONT, GL_SPECULAR, variables.mat_specular)
glMaterialfv(GL_FRONT, GL_SHININESS, variables.mat_shininess)
glEnable(GL_LIGHTING)
glEnable(GL_LIGHT0)
glEnable(GL_DEPTH_TEST)
glEnable(GL_AUTO_NORMAL)
glEnable(GL_NORMALIZE)
variables.nurb = GLU_raw.gluNewNurbsRenderer()
GLU_raw.gluNurbsProperty(variables.nurb, GLU_SAMPLING_TOLERANCE, 25.0)
GLU_raw.gluNurbsProperty(variables.nurb, GLU_DISPLAY_MODE, GLU_FILL)
# Build control points for NURBS mole hills.
for u in range(4):
for v in range(4):
# Red.
variables.pts1[u][v][0] = 2.0 * u
variables.pts1[u][v][1] = 2.0 * v
if (u == 1 or u == 2) and (v == 1 or v == 2):
# Stretch up middle.
variables.pts1[u][v][2] = 6.0
else:
variables.pts1[u][v][2] = 0.0
# Green.
variables.pts2[u][v][0] = 2.0 * (u - 3.0)
variables.pts2[u][v][1] = 2.0 * (v - 3.0)
if (u == 1 or u == 2) and (v == 1 or v == 2):
if u == 1 and v == 1:
# Pull hard on single middle square.
variables.pts2[u][v][2] = 15.0
else:
# Push down on other middle squares.
variables.pts2[u][v][2] = -2.0
else:
variables.pts2[u][v][2] = 0.0
# Blue.
variables.pts3[u][v][0] = 2.0 * (u - 3.0)
variables.pts3[u][v][1] = 2.0 * v
if (u == 1 or u == 2) and (v == 1 or v == 2):
if u == 1 and v == 2:
# Pull up on single middple square.
variables.pts3[u][v][2] = 11.0
else:
# Pull up slightly on other middle squares.
variables.pts3[u][v][2] = 2.0
else:
variables.pts3[u][v][2] = 0.0
# Yellow.
variables.pts4[u][v][0] = 2.0 * u
variables.pts4[u][v][1] = 2.0 * (v - 3.0)
if (u == 1 or u == 2 or u == 3) and (v == 1 or v == 2):
if v == 1:
# Push down front middle and right squares.
variables.pts4[u][v][2] = -2.0
else:
# Pull up back middle and right squares.
variables.pts4[u][v][2] = 5.0
else:
variables.pts4[u][v][2] = 0.0
# Stretch up red's far right corner.
variables.pts1[3][3][2] = 6
# Pull down green's near left corner a little.
variables.pts2[0][0][2] = -2
# Turn up meeting of four corners.
variables.pts1[0][0][2] = 1
variables.pts2[3][3][2] = 1
variables.pts3[3][0][2] = 1
variables.pts4[0][3][2] = 1
glMatrixMode(GL_PROJECTION)
gluPerspective(55.0, 1.0, 2.0, 24.0)
glMatrixMode(GL_MODELVIEW)
glTranslatef(0.0, 0.0, -15.0)
glRotatef(330.0, 1.0, 0.0, 0.0)
glNewList(1, GL_COMPILE)
# Render red hill.
glMaterialfv(GL_FRONT, GL_DIFFUSE, variables.mat_red_diffuse)
GLU_raw.gluBeginSurface(variables.nurb)
GLU_raw.gluNurbsSurface(variables.nurb, 8, variables.knots, 8, variables.knots,
4 * 3, 3, variables.pts1,
4, 4, GL_MAP2_VERTEX_3)
GLU_raw.gluEndSurface(variables.nurb)
# Render green hill.
glMaterialfv(GL_FRONT, GL_DIFFUSE, variables.mat_green_diffuse)
GLU_raw.gluBeginSurface(variables.nurb)
GLU_raw.gluNurbsSurface(variables.nurb, 8, variables.knots, 8, variables.knots,
4 * 3, 3, variables.pts2,
4, 4, GL_MAP2_VERTEX_3)
GLU_raw.gluEndSurface(variables.nurb)
# Render blue hill.
glMaterialfv(GL_FRONT, GL_DIFFUSE, variables.mat_blue_diffuse)
GLU_raw.gluBeginSurface(variables.nurb)
GLU_raw.gluNurbsSurface(variables.nurb, 8, variables.knots, 8, variables.knots,
4 * 3, 3, variables.pts3,
4, 4, GL_MAP2_VERTEX_3)
GLU_raw.gluEndSurface(variables.nurb)
# Render yellow hill.
glMaterialfv(GL_FRONT, GL_DIFFUSE, variables.mat_yellow_diffuse)
GLU_raw.gluBeginSurface(variables.nurb)
GLU_raw.gluNurbsSurface(variables.nurb, 8, variables.knots, 8, variables.knots,
4 * 3, 3, variables.pts4,
4, 4, GL_MAP2_VERTEX_3)
GLU_raw.gluEndSurface(variables.nurb)
glEndList()
glutDisplayFunc(display)
glutMainLoop()