def render(self, detailSize):
# set up some buffers
count = 20000
P = []
Cs = []
w = []
random.seed(997)
for i in range(count):
P.append(
pimath.V3f(random.uniform(-self.dim, self.dim),
random.uniform(-self.dim, self.dim),
random.uniform(-self.dim, self.dim)))
Cs.append(
pimath.V3f(random.uniform(0.05, 1), random.uniform(0.05, 1),
random.uniform(0.05, 1)))
w.append(random.uniform(0.5 * self.point_radius,
self.point_radius))
# form a table from our buffers with required renderman info
t = n.ObjectTable()
t['P'] = n.V3fBuffer(count, pimath.V3f(0, 0, 0))
t['P'].contents = P
t['P'].attribs['token'] = 'P'
if 1:
# colour per point
t['Cs'] = n.V3fBuffer(count, pimath.V3f(0, 0, 0))
t['Cs'].contents = Cs
t['Cs'].attribs['token'] = 'vertex color Cs'
else:
# constant colour across all points
t['Cs'] = n.AttribTable()
t['Cs']['value'] = pimath.V3f(1, 0, 0)
t['Cs']['token'] = 'constant color Cs'
if 0:
# varying width
t['width'] = n.FloatBuffer(count, 0.0)
t['width'].contents = w
t['width'].attribs['token'] = 'varying float width'
else:
if 1:
# constants either as attrib table
t['width'] = n.AttribTable()
t['width']['value'] = 0.05
t['width']['token'] = 'constant float constantwidth'
else:
# or buffer of length 1
t['width'] = n.FloatBuffer(1, 0.03)
t['width'].attribs['token'] = 'constant float constantwidth'
# render
ri.TransformBegin()
ri.Translate(self.centre[0], self.centre[1], self.centre[2])
nd.points(t)
ri.TransformEnd()
def testToPyString():
t = n.ObjectTable()
assert (t.pyStr() == "{}")
t[0] = '1'
t['1'] = 0.0
t[2] = p.V3f(0, 1, 2)
assert (t.pyStr() == '{"1": 0., 0: "1", 2: V3f(0, 1, 2)}')
def MakeLookAt(pos,la,up=pimath.V3f(0,1,0)):
f = (pos - la).normalized()
r = up.cross(f).normalized()
u = f.cross(r).normalized() # re-cross it to make 99.999% orthogonal
m = pimath.M44f(r.x, u.x, f.x, 0.0,
r.y, u.y, f.y, 0.0,
r.z, u.z, f.z, 0.0,
-r.dot(pos), -u.dot(pos), -f.dot(pos), 1.0 )
return m
def testToTupleString():
t = n.ObjectTable()
assert (t.tupStr() == "{}")
t[0] = '1'
t['1'] = 0.0
t[2] = p.V3f(0, 1, 2)
assert (t.tupStr() == '{"1": 0., 0: "1", 2: (0, 1, 2)}')
exec("m=" + t.tupStr())
assert (m == {"1": 0., 0: "1", 2: (0, 1, 2)})
def testV3fBufSerialize(ext):
# create test data on disk
filepath = "/tmp/v3fbuf." + ext
b = n.V3fBuffer(100)
b[50] = p.V3f(3.3, 4.4, 5.5)
n.save(b, filepath)
b2 = n.load(filepath)
assert (type(b) == type(b2))
assert (len(b) == len(b2))
vdiff = b[50] - b2[50]
assert (vdiff.length() < 0.001)
def createImage():
w = 320
h = 240
b = n.V3fBuffer(w * h, p.V3f(0, 0, 0))
print '# creating pixel data'
for y in range(h):
for x in range(w):
s = float(x) / w
t = float(y) / h
b[y * w + x] = p.V3f(s, t, 0)
img = n.ObjectTable()
img['xres'] = w
img['yres'] = h
img['pixels'] = b
# check that this is a valid napalm image
assert ni.isValid(img, True)
return img
def testTable():
t = n.ObjectTable()
assert (len(t) == 0)
fail = False
try:
t["foo"]
except KeyError:
fail = True
assert (fail)
t[1] = 1.111
t["two"] = 68
t[3] = p.V3f(5, 6, 7)
t["four"] = 'Q'
assert (len(t) == 4)
assert ("two" in t)
assert ("blah" not in t)
assert (t["two"] == 68)
assert (t["four"] == 'Q')
vdiff = t[3] - p.V3f(5, 6, 7)
assert (vdiff.length() < 0.0001)
t["buf"] = n.IntBuffer(100)
t["buf"][50] = 50
assert (t["buf"][50] == 50)
del t["four"]
del t[3]
assert (len(t) == 3)
assert (3 not in t)
keys = t.keys()
keys2 = []
for k in t:
keys2.append(k)
assert (keys == keys2)
def render(self, detailSize):
# form a table from our buffers with required renderman info
t = n.ObjectTable()
t['radius'] = self.radius
t['zmin'] = -self.radius
t['zmax'] = self.radius
t['thetamax'] = 360.0
# constant colour
t['Cs'] = n.AttribTable()
t['Cs']['value'] = pimath.V3f(1, 0.5, 0)
t['Cs']['token'] = 'constant color Cs'
# render
ri.TransformBegin()
ri.Translate(self.centre[0], self.centre[1], self.centre[2])
nd.sphere(t)
ri.TransformEnd()
def createUberTable():
t = n.ObjectTable()
t[1] = 1 # this is interpreted as an int
t[2] = 2.2 # this is interpreted as a float
t[3] = n.Double(3.333)
t[4] = "hello"
t[5] = n.Char(-10) # in napalm, a char is interpreted as a number
t[6] = n.UChar(200) # as is an unsigned char
t[7] = n.Short(-30000)
t[8] = n.UShort(60000)
t[9] = n.UInt(2000000000)
# todo add the new imath types inc half
t[10] = p.V3f()
t[11] = p.V3d()
t[12] = p.M33f()
t[13] = p.M33d()
t[14] = p.M44f()
t[15] = p.M44d()
sz = 100
t[16] = n.CharBuffer(sz)
t[17] = n.FloatBuffer(sz)
t[18] = n.DoubleBuffer(sz)
t[19] = n.IntBuffer(sz)
t[20] = n.V3fBuffer(sz)
t[21] = n.V3dBuffer(sz)
t[22] = n.M33fBuffer(sz)
t[23] = n.M33dBuffer(sz)
t[24] = n.M44fBuffer(sz)
t[25] = n.M44dBuffer(sz)
t[16].attribs["a1"] = "aaa1"
t["hey"] = "ho"
return t
def testPrecision(self):
x = pimath.V3f(0.1, 0.0, 0.8)
x.normalize()
assert x.length() - 1.0 < 0.00000000000000001
def render(self, detailSize):
# set up some buffers
count = 200
P = []
Cs = []
w = []
nvertices = []
random.seed(997)
for i in range(count):
cv_count = random.randint(5, 20)
nvertices.append(cv_count)
p0 = pimath.V3f(random.uniform(-self.dim, self.dim),
random.uniform(-self.dim, self.dim),
random.uniform(-self.dim, self.dim))
for cv in range(cv_count):
p0 = p0 + pimath.V3f(random.uniform(-self.dim, self.dim),
random.uniform(-self.dim, self.dim),
random.uniform(-self.dim, self.dim)) * 0.1
P.append(p0)
Cs.append(
pimath.V3f(random.uniform(0.05,
1), random.uniform(0.05, 1),
random.uniform(0.05, 1)))
w.append(
random.uniform(0.1 * self.curve_width, self.curve_width))
# form a table from our buffers with required renderman info
t = n.ObjectTable()
#t['type'] = 'linear'
t['type'] = 'cubic'
#t['wrap'] = 'periodic'
t['wrap'] = 'nonperiodic'
t['nvertices'] = n.IntBuffer(count, len(nvertices))
t['nvertices'].contents = nvertices
# t['nvertices'].attribs['to]
t['P'] = n.V3fBuffer(count, pimath.V3f(0, 0, 0))
t['P'].contents = P
t['P'].attribs['token'] = 'P'
if 1:
# colour per point
t['Cs'] = n.V3fBuffer(count, pimath.V3f(0, 0, 0))
t['Cs'].contents = Cs
t['Cs'].attribs['token'] = 'vertex color Cs'
else:
# constant colour across all points
t['Cs'] = n.AttribTable()
t['Cs']['value'] = pimath.V3f(1, 0, 0)
t['Cs']['token'] = 'constant color Cs'
if 1:
# varying width
t['width'] = n.FloatBuffer(count, 0.0)
t['width'].contents = w
t['width'].attribs['token'] = 'vertex float width'
else:
if 1:
# constants either as attrib table
t['width'] = n.AttribTable()
t['width']['value'] = 0.05
t['width']['token'] = 'constant float constantwidth'
else:
# or buffer of length 1
t['width'] = n.FloatBuffer(1, 0.03)
t['width'].attribs['token'] = 'constant float constantwidth'
# render
ri.TransformBegin()
ri.Translate(self.centre[0], self.centre[1], self.centre[2])
nd.curves(t)
ri.TransformEnd()