def OnInit( self ):
"""Setup running params"""
glMaterialfv(GL_FRONT, GL_SPECULAR, array((1.0, 1.0, 1.0, 0.15),'f') );
glMaterialfv(GL_FRONT, GL_SHININESS, array((100.0, ),'f') );
self.sphereList = glGenLists(1);
if not self.sphereList:
raise SystemError("""Unable to generate display list using glGenLists""")
glNewList(self.sphereList, GL_COMPILE);
glutSolidSphere (0.4, 16, 16);
glEndList();
self.cubeList = glGenLists(1);
glNewList(self.cubeList, GL_COMPILE);
glutSolidCube (0.6);
glEndList();
self.solidZ = 8.0
self.solidTimer = Timer( 8.0 )
self.transparentZ = -8.0
self.transparentTimer = Timer( 4.0 )
self.animating = 1
self.startTime = time.time()
self.addEventHandler( "keypress", name = 'a', function = self.OnAnimate )
print 'Press "a" to stop animation\nNote: r key has no effect'
def Render( self, mode = 0):
BaseContext.Render( self, mode )
glClearColor(0,0,0,1.0)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT )
glLightfv(GL_LIGHT0, GL_POSITION, array( (0.5, 0.5, 1.0, 0.0),'f') );
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
self.updatePositions()
glPushMatrix ();
glTranslatef (-0.15, -0.15, self.solidZ);
glMaterialfv(GL_FRONT, GL_EMISSION, array(( 0.0, 0.0, 0.0, 1.0),'f'), );
glMaterialfv(GL_FRONT, GL_DIFFUSE, array((0.75, 0.75, 0.0, 1.0),'f'), );
glCallList (self.sphereList);
glPopMatrix ();
glPushMatrix ();
glTranslatef (0.15, 0.15, self.transparentZ);
glRotatef (15.0, 1.0, 1.0, 0.0);
glRotatef (30.0, 0.0, 1.0, 0.0);
glMaterialfv(GL_FRONT, GL_EMISSION,array( ( 0.0, 0.3, 0.3, 0.6),'f') );
glMaterialfv(GL_FRONT, GL_DIFFUSE,array( ( 0.0, 0.8, 0.8, 0.8),'f') );
glEnable (GL_BLEND);
glDepthMask (GL_FALSE);
glBlendFunc (GL_SRC_ALPHA, GL_ONE); # note assumption that background is black...
glCallList (self.cubeList);
glDepthMask (GL_TRUE);
glDisable (GL_BLEND);
glPopMatrix ();
def OnInit(self):
"""Setup running params"""
glMaterialfv(GL_FRONT, GL_SPECULAR, array((1.0, 1.0, 1.0, 0.15), 'f'))
glMaterialfv(GL_FRONT, GL_SHININESS, array((100.0, ), 'f'))
self.sphereList = glGenLists(1)
if not self.sphereList:
raise SystemError(
"""Unable to generate display list using glGenLists""")
glNewList(self.sphereList, GL_COMPILE)
glutSolidSphere(0.4, 16, 16)
glEndList()
self.cubeList = glGenLists(1)
glNewList(self.cubeList, GL_COMPILE)
glutSolidCube(0.6)
glEndList()
self.solidZ = 8.0
self.solidTimer = Timer(8.0)
self.transparentZ = -8.0
self.transparentTimer = Timer(4.0)
self.animating = 1
self.startTime = time.time()
self.addEventHandler("keypress", name='a', function=self.OnAnimate)
print 'Press "a" to stop animation\nNote: r key has no effect'
def compile( self, mode=None ):
"""Compile the box as a display-list"""
if vbo.get_implementation():
vb = vbo.VBO( array( list(yieldVertices( self.size )), 'f'))
def draw( textured=True,lit=True ):
vb.bind()
try:
glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS)
try:
glEnableClientState( GL_VERTEX_ARRAY )
if lit:
glEnableClientState( GL_NORMAL_ARRAY )
glNormalPointer( GL_FLOAT, 32, vb+8 )
if textured:
glEnableClientState( GL_TEXTURE_COORD_ARRAY )
glTexCoordPointer( 2, GL_FLOAT, 32, vb )
glVertexPointer( 3, GL_FLOAT, 32, vb+20 )
glDrawArrays( GL_TRIANGLES, 0, 36 )
finally:
glPopClientAttrib()
finally:
vb.unbind()
else:
vb = array( list(yieldVertices( self.size )), 'f')
def draw(textured=True,lit=True):
glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS)
try:
glInterleavedArrays( GL_T2F_N3F_V3F, 0, vb )
glDrawArrays( GL_TRIANGLES, 0, 36 )
finally:
glPopClientAttrib()
holder = mode.cache.holder(self, draw)
holder.depend( self, protofunctions.getField(self, 'size') )
return draw
def Render( self, mode = 0):
BaseContext.Render( self, mode )
glTranslatef( 1,0,0)
vertices = array([
0.0, 0.0, 0.0,
1.0, 0.0, 0.0,
1.0, 1.0, 0.0,
0.0, 1.0, 0.0
], 'f')
indices = array([2, 3, 0, 1 ],'I')
glInterleavedArrays(
GL_V3F, # 3 vertex floats/item
0, # tight packing
vertices.tostring(),
)
glDrawElementsui(GL_QUADS,indices)
glTranslatef( 0,-2,0)
vertices = array([
0,0,1, 0.0, 0.0, 0.0,
0,0,1, 1.0, 0.0, 0.0,
0,0,1, 1.0, 1.0, 0.0,
0,0,1, 0.0, 1.0, 0.0,
], 'f')
glInterleavedArrays(
GL_N3F_V3F, # 3 vertex floats/item, 3 normals/item
0, # tight packing
vertices.tostring(),
)
glDrawElementsui(GL_QUADS, indices)
def Render( self, mode = 0):
BaseContext.Render( self, mode )
glTranslatef( 1,0,0)
vertices = array([
0.0, 0.0, 0.0,
1.0, 0.0, 0.0,
1.0, 1.0, 0.0,
0.0, 1.0, 0.0
], 'f')
indices = array([2, 3, 0, 1 ],'I')
glInterleavedArrays(
GL_V3F, # 3 vertex floats/item
0, # tight packing
vertices.tobytes(),
)
glDrawElementsui(GL_QUADS,indices)
glTranslatef( 0,-2,0)
vertices = array([
0,0,1, 0.0, 0.0, 0.0,
0,0,1, 1.0, 0.0, 0.0,
0,0,1, 1.0, 1.0, 0.0,
0,0,1, 0.0, 1.0, 0.0,
], 'f')
glInterleavedArrays(
GL_N3F_V3F, # 3 vertex floats/item, 3 normals/item
0, # tight packing
vertices.tobytes(),
)
glDrawElementsui(GL_QUADS, indices)
def Render( self, mode = 0):
BaseContext.Render( self, mode )
glColor( *self.colors[self.useArrays])
glDisable( GL_LIGHTING )
# following is required, the indices are in
# CW, rather than default CCW order...
glDisable( GL_CULL_FACE )
VertexArray=[
[0,0,0],[1,0,0],[2,0,0],
[0,1,0],[1,1,0],[2,1,0],
[0,2,0],[1,2,0],[2,2,0]
]
IndiceArray=[
0,3,4,
0,4,1,
1,4,5,
1,5,2,
3,6,7,
3,7,4,
4,7,8,
4,8,5
]
if self.useArrays:
VertexArray=array(VertexArray, 'f') #Here's the problem line
IndiceArray=array(IndiceArray, 'I')
glVertexPointerf(VertexArray)
glEnableClientState(GL_VERTEX_ARRAY);
glDrawElementsui(
GL_TRIANGLES,
IndiceArray
)
class TestContext(BaseContext):
'''
creates a simple vertex shader
'''
def OnInit(self):
try:
self.shader = compileProgram(
compileShader(VERTEX_SHADER, gl.GL_VERTEX_SHADER),
compileShader(FRAGMENT_SHADER, gl.GL_FRAGMENT_SHADER))
except RuntimeError, err:
sys.stderr.write(err.args[0])
sys.exit(1)
self.vbo = vbo.VBO(
array([
[0, 1, 0, 0, 1, 0],
[-1, -1, 0, 1, 1, 0],
[1, -1, 0, 0, 1, 1],
[2, -1, 0, 1, 0, 0],
[4, -1, 0, 0, 1, 0],
[4, 1, 0, 0, 0, 1],
[2, -1, 0, 1, 0, 0],
[4, 1, 0, 0, 0, 1],
[2, 1, 0, 0, 1, 1],
], 'f'))
def renderCap(self, scale=400.0):
"""The cap is generated with GLU tessellation routines...
"""
gluTessCallback(self.tess, GLU_TESS_BEGIN, glBegin)
def test(t, polyData=None):
glNormal(0, 0, -1)
glColor3f(t[0] / 2.0, t[1] / 2.0, t[2] / 2.0)
return glVertex3f(t[0], t[1], t[2])
gluTessCallback(self.tess, GLU_TESS_VERTEX_DATA, test)
gluTessCallback(self.tess, GLU_TESS_END, glEnd)
def combine(points, vertices, weights):
#print 'combine called', points, vertices, weights
return points
gluTessCallback(self.tess, GLU_TESS_COMBINE, combine)
gluTessBeginPolygon(self.tess, None)
try:
gluTessBeginContour(self.tess)
try:
for (x, y) in outline:
vertex = array((x / scale, y / scale, 0.0), 'd')
gluTessVertex(self.tess, vertex, vertex)
finally:
gluTessEndContour(self.tess)
finally:
gluTessEndPolygon(self.tess)
def OnMand(self, event):
shader = self.shaders[2]
zoom = shader.objects[0].getVariable('Zoom')
center = shader.objects[0].getVariable('Center')
iterations = shader.objects[0].getVariable('MaxIterations')
if event.name == 'z':
zoom.value = zoom.value * .85
print 'zoom value', zoom.value
elif event.name == 'x':
zoom.value = zoom.value * 1.15
print 'zoom value', zoom.value
elif event.name == 'r':
if iterations is not None:
iterations.value += 5
if iterations.value[0] > 105:
# limit of floating-point precision...
iterations.value = 105
print 'max iterations', iterations.value[0]
else:
print 'shader objects 0', shader.objects[0].toString()
elif event.name == 'f':
if iterations is not None:
iterations.value -= 5
if iterations.value[0] <= 0:
iterations.value = 1
print 'max iterations', iterations.value[0]
directions = {'a': (-1, 0), 'd': (1, 0), 'w': (0, 1), 's': (0, -1)}
if event.name in directions:
step = zoom.value / 10.0
vec = array(directions[event.name], 'f') * step
center.value = center.value + vec
print 'new center', center.value
def OnInit(self):
"""Init"""
vertex = shaders.compileShader(
"""
#version 120
void main()
{
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
}
""", GL_VERTEX_SHADER)
fragment = shaders.compileShader(
"""
#version 120
void main ()
{
gl_FragColor = vec4(0, 1, 0, 1);
}
""", GL_FRAGMENT_SHADER)
self.shader = shaders.compileProgram(vertex, fragment)
self.vbo = vbo.VBO(
array([
[0, 1, 0],
[-1, -1, 0],
[1, -1, 0],
[2, -1, 0],
[4, -1, 0],
[4, 1, 0],
[2, -1, 0],
[4, 1, 0],
[2, 1, 0],
], 'f')
)
def OnMand( self, event ):
shader = self.shaders[2]
zoom = shader.objects[0].getVariable( 'Zoom' )
center = shader.objects[0].getVariable( 'Center' )
iterations = shader.objects[0].getVariable( 'MaxIterations' )
if event.name == 'z':
zoom.value = zoom.value * .85
print 'zoom value', zoom.value
elif event.name == 'x':
zoom.value = zoom.value * 1.15
print 'zoom value', zoom.value
elif event.name == 'r':
if iterations is not None:
iterations.value += 5
if iterations.value[0] > 105:
# limit of floating-point precision...
iterations.value = 105
print 'max iterations', iterations.value[0]
else:
print 'shader objects 0', shader.objects[0].toString()
elif event.name == 'f':
if iterations is not None:
iterations.value -= 5
if iterations.value[0] <= 0:
iterations.value = 1
print 'max iterations', iterations.value[0]
directions = { 'a':(-1,0),'d':(1,0),'w':(0,1),'s':(0,-1) }
if event.name in directions:
step = zoom.value / 10.0
vec = array(directions[event.name],'f') * step
center.value = center.value + vec
print 'new center', center.value
def OnInit(self):
try:
self.shader = compileProgram(
compileShader(VERTEX_SHADER, gl.GL_VERTEX_SHADER),
compileShader(FRAGMENT_SHADER, gl.GL_FRAGMENT_SHADER))
except RuntimeError as err:
sys.stderr.write(err.args[0])
sys.exit(1)
self.vbo = vbo.VBO(array(VERTEX_DATA, 'f'))
for uniform in (
'Global_ambient',
'Light_ambient',
'Light_diffuse',
'Light_location',
'Material_ambient',
'Material_diffuse',
):
location = gl.glGetUniformLocation(self.shader, uniform)
if location in (None, -1):
print('Warning, no uniform: %s' % uniform)
setattr(self, uniform + '_loc', location)
for attribute in (
'Vertex_position',
'Vertex_normal',
):
location = gl.glGetAttribLocation(self.shader, attribute)
if location in (None, -1):
print('Warning, no attribute: %s' % attribute)
setattr(self, attribute + '_loc', location)
def __init__ (
self,
point = (0,0,0),
color = None,
normal = None,
textureCoordinate = None,
metaIndex = -1,
coordIndex = -1,
indexKey = None,
):
"""Initialize the Vertex
point -- three-dimensional coordinate
color -- optional three-float color
normal -- optional three-dimensional normalized vector
textureCoordinate -- optional two-dimensional texture coordinate
metaIndex -- optional integer index into the source
index array (i.e. coordIndex[metaIndex], colorIndex[metaIndex],...
is the index which produced the vertex.
"""
self.point = array( point,'d')
self.color = color
self.normal = normal
self.textureCoordinate = textureCoordinate
self.metaIndex = int(metaIndex)
self.coordIndex = int(coordIndex)
self.indexKey = indexKey
def __init__(
self,
point=(0, 0, 0),
color=None,
normal=None,
textureCoordinate=None,
metaIndex=-1,
coordIndex=-1,
indexKey=None,
):
"""Initialize the Vertex
point -- three-dimensional coordinate
color -- optional three-float color
normal -- optional three-dimensional normalized vector
textureCoordinate -- optional two-dimensional texture coordinate
metaIndex -- optional integer index into the source
index array (i.e. coordIndex[metaIndex], colorIndex[metaIndex],...
is the index which produced the vertex.
"""
self.point = array(point, 'd')
self.color = color
self.normal = normal
self.textureCoordinate = textureCoordinate
self.metaIndex = int(metaIndex)
self.coordIndex = int(coordIndex)
self.indexKey = indexKey
class TestContext( BaseContext ):
'''
creates a simple vertex shader
'''
def OnInit( self ):
try:
self.shader = compileProgram(
compileShader( VERTEX_SHADER, gl.GL_VERTEX_SHADER ),
compileShader( FRAGMENT_SHADER, gl.GL_FRAGMENT_SHADER )
)
except RuntimeError, err:
sys.stderr.write( err.args[0] )
sys.exit( 1 )
self.vbo = vbo.VBO(
array( VERTEX_DATA, 'f' )
)
self.position = gl.glGetAttribLocation( self.shader, 'position' )
self.tweened = gl.glGetAttribLocation( self.shader, 'tweened' )
self.color = gl.glGetAttribLocation( self.shader, 'color' )
self.tween = gl.glGetUniformLocation( self.shader, 'tween' )
self.time = Timer( duration = 2.0, repeating = 1 )
self.time.addEventHandler( "fraction", self.OnTimerFraction )
self.time.register( self )
self.time.start()
def coords( self ):
"""Return our bottom-left and top-right coordinate pairs"""
if self._coords is None:
tx,ty,d = self.atlas.size()
tx,ty = float(tx),float(ty)
x,y = self.offset
sx,sy = self.size
self._coords = array( ((x/tx,y/ty),((x+sx)/tx,(y+sy)/ty)), 'f')
return self._coords
def coords( self ):
"""Return our bottom-left and top-right coordinate pairs"""
if self._coords is None:
tx,ty,d = self.atlas.size()
tx,ty = float(tx),float(ty)
x,y = self.offset
sx,sy = self.size
self._coords = array( ((x/tx,y/ty),((x+sx)/tx,(y+sy)/ty)), 'f')
return self._coords
def drawCube():
"""Draw a cube 2,2,2 units centered around the origin"""
# draw six faces of a cube
global VBO
if VBO is None:
if vbo.get_implementation():
data = vbo.VBO(array(list(box.yieldVertices((2, 2, 2))), 'f'))
def draw():
data.bind()
try:
glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS)
try:
glEnable(GL_VERTEX_ARRAY)
glEnable(GL_NORMAL_ARRAY)
glEnable(GL_TEXTURE_COORD_ARRAY)
glVertexPointer(3, GL_FLOAT, 32, data + 20)
glNormalPointer(GL_FLOAT, 32, data + 8)
glTexCoordPointer(2, GL_FLOAT, 32, data)
glDrawArrays(GL_TRIANGLES, 0, 36)
finally:
glPopClientAttrib()
finally:
data.unbind()
VBO = draw
else:
data = array(list(yieldVertices((2, 2, 2))), 'f')
def draw():
try:
glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS)
try:
# interleaved arrays is not 3.1 compatible,
# but this is the old-code path...
glInterleavedArrays(GL_T2F_N3F_V3F, 0, data)
glDrawArrays(GL_TRIANGLES, 0, 36)
finally:
glPopClientAttrib()
finally:
data.unbind()
VBO = draw
return VBO()
def Render(self, mode=0):
BaseContext.Render(self, mode)
glColor(*self.colors[self.useArrays])
glDisable(GL_LIGHTING)
# following is required, the indices are in
# CW, rather than default CCW order...
glDisable(GL_CULL_FACE)
VertexArray = [[0, 0, 0], [1, 0, 0], [2, 0, 0], [0, 1, 0], [1, 1, 0],
[2, 1, 0], [0, 2, 0], [1, 2, 0], [2, 2, 0]]
IndiceArray = [
0, 3, 4, 0, 4, 1, 1, 4, 5, 1, 5, 2, 3, 6, 7, 3, 7, 4, 4, 7, 8, 4,
8, 5
]
if self.useArrays:
VertexArray = array(VertexArray, 'f') #Here's the problem line
IndiceArray = array(IndiceArray, 'I')
glVertexPointerf(VertexArray)
glEnableClientState(GL_VERTEX_ARRAY)
glDrawElementsui(GL_TRIANGLES, IndiceArray)
def OnInit( self ):
"""Initialisation"""
print """Should see a simplistic terrain when you look down (<ctrl+down-arrow>)"""
points = Image.open( "heightmap.png" ).convert('L')
print points.format
ix,iy,data = points.size[0],points.size[1],points.tostring()
data = arrays.frombuffer( data, 'B' ).astype( 'f' )
self.data = arrays.zeros( (ix,iy,3), 'f' )
markers = arrays.swapaxes( arrays.indices( (ix,iy), 'f'), 0,2 )
self.data[:,:,0] = markers[:,:,0]
self.data[:,:,2] = markers[:,:,1]
#self.data[:,:,2] = arrays.arange( 0,iy, dtype='f' ).reshape( (1,iy) )
#self.data[:,:,0] = arrays.arange( 0,ix, dtype='f' )
self.data[:,:,1] = data.reshape( (ix,iy) )
# GL_QUAD_STRIP values (simple rendering)
# If iy is not event this goes to heck!
assert not iy%2, ("""Need a power-of-2 image for heightmap!""", iy)
lefts = arrays.arange( 0, iy*(ix-1), dtype='I' )
# create the right sides of the rectangles
lrs = arrays.repeat( lefts, 2 )
lrs[1::2] += iy
self.indices = lrs.reshape( (ix-1,iy*2) )
self.shape = IndexedPolygons(
polygonSides = GL_QUAD_STRIP,
index = self.indices,
coord = Coordinate(
point = self.data,
),
solid= False,
normal = Normal(
vector= array([0,1,0]*(ix*iy),'f'),
),
)
self.sg = sceneGraph(
children = [
Transform(
translation = (0,-10,0),
scale = (1.0, 0.002, 1),
children = [
Shape(
appearance = Appearance( material = Material(
diffuseColor = (.5,1,.5),
)),
geometry = self.shape,
),
],
),
PointLight(
location=(10,8,5),
),
],
)
def Light( self, lightID, mode=None ):
"""Render light using given light ID for the given mode
This will check for:
mode.lighting
mode.lightingAmbient
mode.lightingDiffuse
and appropriately enable/disable the various features.
Returns whether or not the light ID has been used,
which allows us to reuse the light ID in case this
light does not actually need it for this particular
rendering pass.
"""
if self.on and mode.lighting and (mode.lightingAmbient or mode.lightingDiffuse):
glEnable( GL_LIGHTING )
glEnable( lightID )
### The following code allows for ambient-only lighting
### and/or diffuse-only
if mode.lightingAmbient:
x,y,z = self.color * self.ambientIntensity
else:
x,y,z = 0.0, 0.0, 0.0
glLightfv(lightID, GL_AMBIENT, array((x,y,z,1.0),'f'))
if mode.lightingDiffuse:
x,y,z = self.color
else:
x,y,z = 0.0, 0.0, 0.0
glLightfv(
lightID,
GL_DIFFUSE,
array((x,y,z,1.0),'f')*self.intensity
)
if hasattr( self, 'location' ):
x,y,z = self.location
else:
x,y,z = -self.direction
glLightfv(lightID, GL_POSITION, array((x,y,z,self.pointSource),'f'))
return 1
else:
return 0
def test_matrix(self):
"""Test that a texture matrix can produce a proper scale/offset"""
map = self.atlasManager.add(NumpyAdapter(zeros((64, 64, 4), 'B')))
matrix = map.matrix()
assert matrix is not None
bottom_left = dot(array([0, 0, 0, 1], 'f'), matrix)
assert allclose(bottom_left, [0, 0, 0, 1]), bottom_left
top_right = dot(array([1, 1, 0, 1], 'f'), matrix)
assert allclose(top_right, [.25, .25, 0, 1]), top_right
map = self.atlasManager.add(NumpyAdapter(zeros((64, 64, 4), 'B')))
matrix = map.matrix()
assert matrix is not None
bottom_left = dot(array([0, 0, 0, 1], 'f'), matrix)
assert allclose(bottom_left, [.25, 0, 0, 1]), (bottom_left, matrix)
top_right = dot(array([1, 1, 0, 1], 'f'), matrix)
assert allclose(top_right, [.5, .25, 0, 1]), (top_right, matrix)
set = dot(array([[0, 0, 0, 1], [1, 1, 0, 1]], 'f'), matrix)
assert allclose(set, [[.25, 0, 0, 1], [.5, .25, 0, 1]]), (set, matrix)
def Render(self, mode=0):
BaseContext.Render(self, mode)
glClearColor(0, 0, 0, 1.0)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glLightfv(GL_LIGHT0, GL_POSITION, array((0.5, 0.5, 1.0, 0.0), 'f'))
glEnable(GL_LIGHTING)
glEnable(GL_LIGHT0)
self.updatePositions()
glPushMatrix()
glTranslatef(-0.15, -0.15, self.solidZ)
glMaterialfv(
GL_FRONT,
GL_EMISSION,
array((0.0, 0.0, 0.0, 1.0), 'f'),
)
glMaterialfv(
GL_FRONT,
GL_DIFFUSE,
array((0.75, 0.75, 0.0, 1.0), 'f'),
)
glCallList(self.sphereList)
glPopMatrix()
glPushMatrix()
glTranslatef(0.15, 0.15, self.transparentZ)
glRotatef(15.0, 1.0, 1.0, 0.0)
glRotatef(30.0, 0.0, 1.0, 0.0)
glMaterialfv(GL_FRONT, GL_EMISSION, array((0.0, 0.3, 0.3, 0.6), 'f'))
glMaterialfv(GL_FRONT, GL_DIFFUSE, array((0.0, 0.8, 0.8, 0.8), 'f'))
glEnable(GL_BLEND)
glDepthMask(GL_FALSE)
glBlendFunc(GL_SRC_ALPHA, GL_ONE)
# note assumption that background is black...
glCallList(self.cubeList)
glDepthMask(GL_TRUE)
glDisable(GL_BLEND)
glPopMatrix()
def Light(self, lightID, mode=None):
"""Render light using given light ID for the given mode
This will check for:
mode.lighting
mode.lightingAmbient
mode.lightingDiffuse
and appropriately enable/disable the various features.
Returns whether or not the light ID has been used,
which allows us to reuse the light ID in case this
light does not actually need it for this particular
rendering pass.
"""
if self.on and mode.lighting and (mode.lightingAmbient
or mode.lightingDiffuse):
glEnable(GL_LIGHTING)
glEnable(lightID)
### The following code allows for ambient-only lighting
### and/or diffuse-only
if mode.lightingAmbient:
x, y, z = self.color * self.ambientIntensity
else:
x, y, z = 0.0, 0.0, 0.0
glLightfv(lightID, GL_AMBIENT, array((x, y, z, 1.0), 'f'))
if mode.lightingDiffuse:
x, y, z = self.color
else:
x, y, z = 0.0, 0.0, 0.0
glLightfv(lightID, GL_DIFFUSE,
array((x, y, z, 1.0), 'f') * self.intensity)
if hasattr(self, 'location'):
x, y, z = self.location
else:
x, y, z = -self.direction
glLightfv(lightID, GL_POSITION,
array((x, y, z, self.pointSource), 'f'))
return 1
else:
return 0
def SceneGraphDefaultlight( self, lightID ):
"""Create the default headlight
VRML browsers generally have a default lighting scheme
where, if there are no lights in the scene, a headlight
is created pointing from the viewpoint forward into the scene.
The light paths found by the OverallPass are used to
transform the individual light objects to their appropriate
positions in the scene.
XXX
This code is not quite right, instead of creating
a headlight, it is just creating a simple light pointing
forward from 0,0,10. What we want is a light that always
points forward from the current viewpoint in the current
view direction.
"""
if self.lightingDiffuse:
glEnable(lightID)
glLight(lightID, GL_DIFFUSE, array((1.0,1.0,1.0,1.0),'f'))
glLight(lightID, GL_POSITION, array((0.0,0.0,10.0,1.0),'f'))
def SceneGraphDefaultlight(self, lightID):
"""Create the default headlight
VRML browsers generally have a default lighting scheme
where, if there are no lights in the scene, a headlight
is created pointing from the viewpoint forward into the scene.
The light paths found by the OverallPass are used to
transform the individual light objects to their appropriate
positions in the scene.
XXX
This code is not quite right, instead of creating
a headlight, it is just creating a simple light pointing
forward from 0,0,10. What we want is a light that always
points forward from the current viewpoint in the current
view direction.
"""
if self.lightingDiffuse:
glEnable(lightID)
glLight(lightID, GL_DIFFUSE, array((1.0, 1.0, 1.0, 1.0), 'f'))
glLight(lightID, GL_POSITION, array((0.0, 0.0, 10.0, 1.0), 'f'))
def compile(self, mode=None):
"""Compile the box as a display-list"""
if vbo.get_implementation():
vb = vbo.VBO(array(list(yieldVertices(self.size)), 'f'))
def draw(textured=True, lit=True):
vb.bind()
try:
glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS)
try:
glEnableClientState(GL_VERTEX_ARRAY)
if lit:
glEnableClientState(GL_NORMAL_ARRAY)
glNormalPointer(GL_FLOAT, 32, vb + 8)
if textured:
glEnableClientState(GL_TEXTURE_COORD_ARRAY)
glTexCoordPointer(2, GL_FLOAT, 32, vb)
glVertexPointer(3, GL_FLOAT, 32, vb + 20)
glDrawArrays(GL_TRIANGLES, 0, 36)
finally:
glPopClientAttrib()
finally:
vb.unbind()
else:
vb = array(list(yieldVertices(self.size)), 'f')
def draw(textured=True, lit=True):
glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS)
try:
glInterleavedArrays(GL_T2F_N3F_V3F, 0, vb)
glDrawArrays(GL_TRIANGLES, 0, 36)
finally:
glPopClientAttrib()
holder = mode.cache.holder(self, draw)
holder.depend(self, protofunctions.getField(self, 'size'))
return draw
def OnInit(self):
"""Initialisation"""
print(
"""Should see a simplistic terrain when you look down (<ctrl+down-arrow>)"""
)
points = Image.open("heightmap.png").convert('L')
print(points.format)
ix, iy, data = points.size[0], points.size[1], points.tobytes()
data = arrays.frombuffer(data, 'B').astype('f')
self.data = arrays.zeros((ix, iy, 3), 'f')
markers = arrays.swapaxes(arrays.indices((ix, iy), 'f'), 0, 2)
self.data[:, :, 0] = markers[:, :, 0]
self.data[:, :, 2] = markers[:, :, 1]
#self.data[:,:,2] = arrays.arange( 0,iy, dtype='f' ).reshape( (1,iy) )
#self.data[:,:,0] = arrays.arange( 0,ix, dtype='f' )
self.data[:, :, 1] = data.reshape((ix, iy))
# GL_QUAD_STRIP values (simple rendering)
# If iy is not event this goes to heck!
assert not iy % 2, ("""Need a power-of-2 image for heightmap!""", iy)
lefts = arrays.arange(0, iy * (ix - 1), dtype='I')
# create the right sides of the rectangles
lrs = arrays.repeat(lefts, 2)
lrs[1::2] += iy
self.indices = lrs.reshape((ix - 1, iy * 2))
self.shape = IndexedPolygons(
polygonSides=GL_QUAD_STRIP,
index=self.indices,
coord=Coordinate(point=self.data, ),
solid=False,
normal=Normal(vector=array([0, 1, 0] * (ix * iy), 'f'), ),
)
self.sg = sceneGraph(children=[
Transform(
translation=(0, -10, 0),
scale=(1.0, 0.002, 1),
children=[
Shape(
appearance=Appearance(
material=Material(diffuseColor=(.5, 1, .5), )),
geometry=self.shape,
),
],
),
PointLight(location=(10, 8, 5), ),
], )
def OnTimerFraction( self, event ):
"""Update light position/direction"""
'''Every cycle we want to do a full rotation, and we want the
light to be 10 units from the y axis in the x,z plane.
All else is math.'''
light = self.lights[0]
a = event.fraction() * 2 * pi
xz = array( [
sin(a),cos(a),
],'f') * 10 # radius
position = light.location
position[0] = xz[0]
position[2] = xz[1]
light.location = position
'''We point the light at the origin, mostly because it's easy.'''
light.direction = -position
def DrawSphereNew(radius, color):
vertices = []
vertices.append([0.0, 0.0, 0.0, color[0], color[1], color[2]])
for angle in range(0, 360, 5):
vertices.append([(math.sin(angle) * radius),
(math.cos(angle) * radius), 0.0, color[0], color[1],
color[2]])
spherevbo = vbo.VBO(array(vertices, 'f'))
spherevbo.bind()
glEnableClientState(GL_VERTEX_ARRAY)
glEnableClientState(GL_COLOR_ARRAY)
glVertexPointer(3, GL_FLOAT, 24, spherevbo)
glColorPointer(3, GL_FLOAT, 24, spherevbo + 12)
glDrawArrays(GL_TRIANGLE_FAN, 0, 72)
glDisableClientState(GL_VERTEX_ARRAY)
glDisableClientState(GL_COLOR_ARRAY)
spherevbo.unbind()
def OnTimerFraction(self, event):
"""Update light position/direction"""
'''Every cycle we want to do a full rotation, and we want the
light to be 10 units from the y axis in the x,z plane.
All else is math.'''
light = self.lights[0]
a = event.fraction() * 2 * pi
xz = array([
sin(a),
cos(a),
], 'f') * 10 # radius
position = light.location
position[0] = xz[0]
position[2] = xz[1]
light.location = position
'''We point the light at the origin, mostly because it's easy.'''
light.direction = -position
def OnInit( self ):
self.shader = compileProgram(
compileShader( VERTEX_SHADER, gl.GL_VERTEX_SHADER ),
compileShader( FRAGMENT_SHADER, gl.GL_FRAGMENT_SHADER )
)
self.vbo = vbo.VBO(
array( [
[ 0, 1, 0 ],
[ -1,-1, 0 ],
[ 1,-1, 0 ],
[ 2,-1, 0 ],
[ 4,-1, 0 ],
[ 4, 1, 0 ],
[ 2,-1, 0 ],
[ 4, 1, 0 ],
[ 2, 1, 0 ],
], 'f')
)
def unproject(self, viewCoordinate=None):
"""Get the world coordinates for viewCoordinate for the event
viewCoordinate -- coordinate to project, if omitted, the
first "hit" entry in the name-stack will be used. Otherwise
should be a three-item array/tuple. The z component of
this tuple is interpreted acording to type. If it's an
integer or long, it's consider a raw OpenGL depth-buffer
value as returned in the name-stack, and is converted to
a floating-point depth value. If it's already a floating-
point value, it's left as-is.
"""
if viewCoordinate is None:
if self.worldCoordinate:
return self.worldCoordinate
if not self.viewCoordinate:
if self.getNameStack():
x,y = self.getPickPoint()
z = self.getNameStack()[0][0] # near of the first result-set
z = z / (2.0**32-1.0)
self.viewCoordinate = x,y,z
else:
raise ValueError( """Attempting to unproject a mouse event without a viewCoordinate or namestack %s"""%self)
else:
x,y,z = self.viewCoordinate
else:
x,y,z = viewCoordinate
if isinstance( z, (int,long)):
z = z / (2.0**32-1.0)
viewport = self.viewport
if viewport is not None:
viewport = array(viewport,'i')
worldCoordinate = gluUnProject(
x,y,z,
self.modelViewMatrix.astype('d'),
self.projectionMatrix.astype('d'),
viewport,
)
if viewCoordinate is None:
self.worldCoordinate = worldCoordinate
return worldCoordinate
def onPositionFraction( self, event ):
"""Process fractional update of our position"""
fraction = (event.fraction() / 2.0) + .5
x,y,z = self.posInterpolator.on_set_fraction( fraction )
self.platform.position = arrays.array([x,y,z,0.0], 'f' )
"""VRML97-style TextureTransform node"""
from OpenGL.GL import *
from vrml.vrml97 import basenodes
from OpenGLContext.arrays import array, any, allclose
from math import pi
RADTODEG = 180/pi
NULLSCALE = array([1,1],'d')
class TextureTransform(basenodes.TextureTransform):
"""Texture-transformation node based on the VRML node
A texture transform should be applied within a block
that switches to texture-transform mode first, applies
the change, then switches back. You should then pop
the texture-transform stack when you're done.
http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-IS-VRML97WithAmendment1/part1/nodesRef.html#TextureTransform
"""
def transform( self, mode=None, translate=1, scale=1, rotate=1 ):
''' Perform the actual alteration of the current matrix '''
if translate and any(self.translation):
x,y = self.translation
glTranslatef(x,y,0)
if (rotate or scale) and any(self.center):
cx,cy = self.center
glTranslatef(cx,cy,0)
if rotate and self.rotation:
glRotatef( self.rotation * RADTODEG, 0,0,1)
if scale and not allclose(self.scale, NULLSCALE):
sx,sy = self.scale
"""VRML97-style TextureTransform node"""
from OpenGL.GL import *
from vrml.vrml97 import basenodes
from OpenGLContext.arrays import array, any, allclose
from math import pi
RADTODEG = 180/pi
NULLSCALE = array([1,1],'d')
class TextureTransform(basenodes.TextureTransform):
"""Texture-transformation node based on the VRML node
A texture transform should be applied within a block
that switches to texture-transform mode first, applies
the change, then switches back. You should then pop
the texture-transform stack when you're done.
http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-IS-VRML97WithAmendment1/part1/nodesRef.html#TextureTransform
"""
def transform( self, mode=None, translate=1, scale=1, rotate=1 ):
''' Perform the actual alteration of the current matrix '''
if translate and any(self.translation):
x,y = self.translation
glTranslatef(x,y,0)
if (rotate or scale) and any(self.center):
cx,cy = self.center
glTranslatef(cx,cy,0)
if rotate and self.rotation:
glRotatef( self.rotation * RADTODEG, 0,0,1)
if scale and not allclose(self.scale, NULLSCALE):
sx,sy = self.scale
def OnTimerFraction(self, event):
self.sg.rotation = array([0, 1, 0, event.fraction() * pi * 2], 'f')
self.appearance.material.diffuseColor = [event.fraction()] * 3
self.triggerRedraw(False)
from OpenGL.GL import *
from OpenGLContext.arrays import array
from OpenGLContext.scenegraph.basenodes import *
import string, time
## Control points for the bezier surface
ctrlpoints = array([
[[-1.5, -1.5, 4.0] ,
[-0.5, -1.5, 2.0] ,
[0.5, -1.5, -1.0] ,
[1.5, -1.5, 2.0]] ,
[[-1.5, -0.5, 1.0] ,
[-0.5, -0.5, 3.0] ,
[0.5, -0.5, 0.0] ,
[1.5, -0.5, -1.0]] ,
[[-1.5, 0.5, 4.0] ,
[-0.5, 0.5, 0.0] ,
[0.5, 0.5, 3.0] ,
[1.5, 0.5, 4.0]] ,
[[-1.5, 1.5, -2.0] ,
[-0.5, 1.5, -2.0] ,
[0.5, 1.5, 0.0] ,
[1.5, 1.5, -1.0]] ,
], 'f' )
## Texture control points
texpts = array([
[[0.0, 0.0],
[0.0, 1.0]],
[[1.0, 0.0],
[1.0, 1.0]],
class _CubeBackground(object):
right = field.newField('right',
'SFNode',
default=imagetexture.ImageTexture)
top = field.newField('top', 'SFNode', default=imagetexture.ImageTexture)
back = field.newField('back', 'SFNode', default=imagetexture.ImageTexture)
left = field.newField('left', 'SFNode', default=imagetexture.ImageTexture)
front = field.newField('front',
'SFNode',
default=imagetexture.ImageTexture)
bottom = field.newField('bottom',
'SFNode',
default=imagetexture.ImageTexture)
rightUrl = URLField('rightUrl')
topUrl = URLField('topUrl')
backUrl = URLField('backUrl')
leftUrl = URLField('leftUrl')
frontUrl = URLField('frontUrl')
bottomUrl = URLField('bottomUrl')
bound = field.newField('bound', 'SFBool', 1, 0)
def Render(self, mode, clear=1):
"""Render the cube background
This renders those of our cube-faces which are
facing us, and which have a non-0 component-count.
After it's finished, it clears the depth-buffer
to make the geometry appear "behind" everything
else.
"""
if mode.passCount == 0:
render_data = mode.cache.getData(self)
if render_data is None:
render_data = self.compile(mode)
if not render_data:
return
texture, vert_vbo, index_vbo, shader, vertex_loc, mvp_matrix_loc = render_data
if clear:
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT)
glDisable(GL_LIGHTING)
glDisable(GL_COLOR_MATERIAL)
try:
with texture:
# we don't currently have it handy...
with shader:
glEnableVertexAttribArray(vertex_loc)
with vert_vbo:
glVertexAttribPointer(vertex_loc, 3, GL_FLOAT,
GL_FALSE, 0, vert_vbo)
matrix = dot(mode.matrix, mode.projection)
glUniformMatrix4fv(mvp_matrix_loc, 1, GL_FALSE,
matrix)
with index_vbo:
# 6 faces, 4 indices each
glDrawElements(GL_QUADS, 24, GL_UNSIGNED_SHORT,
index_vbo)
glDisableVertexAttribArray(vertex_loc)
finally:
glDepthMask(GL_TRUE)
glEnable(GL_LIGHTING)
glEnable(GL_COLOR_MATERIAL)
CUBE_VERTICES = array([
-100.0,
100.0,
100.0,
-100.0,
-100.0,
100.0,
100.0,
-100.0,
100.0,
100.0,
100.0,
100.0,
-100.0,
100.0,
-100.0,
-100.0,
-100.0,
-100.0,
100.0,
-100.0,
-100.0,
100.0,
100.0,
-100.0,
], 'f')
CUBE_INDICES = array([
3,
2,
1,
0,
0,
1,
5,
4,
7,
6,
2,
3,
4,
5,
6,
7,
4,
7,
3,
0,
1,
2,
6,
5,
], 'H')
# TODO: should have one-per-context...
def compile(self, mode):
"""Compile a VBO with our various triangles to render"""
images = {
'-x': self.left,
'+x': self.right,
'+y': self.top,
'-y': self.bottom,
'-z': self.front,
'+z': self.back,
}
def all_same(key):
current = None
for k, value in images.items():
new = getattr(value, key)
if current is None:
current = new
else:
if new != current:
return False
return True
if not all_same('components'):
return None
tex = texture.CubeTexture()
try:
tex.fromPIL([(k, i.image) for k, i in images.items()])
except ValueError as err:
return None
vert_vbo = vbo.VBO(self.CUBE_VERTICES)
index_vbo = vbo.VBO(self.CUBE_INDICES, target=GL_ELEMENT_ARRAY_BUFFER)
# this shader is from
shader = shaders.compileProgram(
shaders.compileShader(
'''#version 130
in vec3 vertex;
out vec3 texCoord;
uniform mat4 mvp_matrix;
void main() {
gl_Position = mvp_matrix * vec4( vertex, 1.0);
texCoord = normalize(vertex);
}''', GL_VERTEX_SHADER),
shaders.compileShader(
'''#version 130
in vec3 texCoord;
out vec4 fragColor;
uniform samplerCube cube_map;
void main( ) {
fragColor = texture(cube_map, texCoord);
}''', GL_FRAGMENT_SHADER),
)
vertex_loc = glGetAttribLocation(shader, 'vertex')
mvp_matrix_loc = glGetUniformLocation(shader, 'mvp_matrix')
render_data = (tex, vert_vbo, index_vbo, shader, vertex_loc,
mvp_matrix_loc)
if hasattr(mode, 'cache'):
holder = mode.cache.holder(self, render_data)
for key in ('right', 'left', 'top', 'bottom', 'front', 'back'):
holder.depend(self, key + 'Url')
return render_data
"""Shader node implementation"""
from OpenGL.GL import *
from OpenGL.GL import shaders as GL_shaders
from OpenGL.GLU import *
from OpenGL.GLUT import *
from OpenGL import error
from OpenGL.arrays import vbo
from OpenGLContext.arrays import array, reshape
from OpenGLContext import context
from vrml.vrml97 import shaders
import operator
from vrml import field, node, fieldtypes, protofunctions
from OpenGLContext.scenegraph import polygonsort, boundingvolume
from OpenGLContext.arrays import array, transpose
LOCAL_ORIGIN = array([[0, 0, 0, 1.0]], 'f')
import time, sys
from OpenGL.extensions import alternate
import logging
log = logging.getLogger(__name__)
class _Buffer(object):
"""VBO based buffer implementation for generic geometry"""
GL_USAGE_MAPPING = {
'STREAM_DRAW': GL_STREAM_DRAW,
'STREAM_READ': GL_STREAM_READ,
'STREAM_COPY': GL_STREAM_COPY,
'STATIC_DRAW': GL_STATIC_DRAW,
"""Geometry type for "point-arrays" w/ colour support"""
from OpenGL.GL import *
from vrml.vrml97 import basenodes
from OpenGLContext.scenegraph import coordinatebounded
from OpenGLContext.arrays import array
from OpenGL.extensions import alternate
from OpenGL.GL.ARB.point_parameters import *
from OpenGL.GL.EXT.point_parameters import *
import logging
log = logging.getLogger(__name__)
glPointParameterf = alternate(glPointParameterf, glPointParameterfARB,
glPointParameterfEXT)
glPointParameterfv = alternate(glPointParameterfv, glPointParameterfvARB,
glPointParameterfEXT)
RESET_ATTENUATION = array([1, 0, 0], 'f')
class PointSet(coordinatebounded.CoordinateBounded, basenodes.PointSet):
"""VRML97-style Point-Set object
http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-IS-VRML97WithAmendment1/part1/nodesRef.html#PointSet
"""
def render(
self,
visible=1, # can skip normals and textures if not
lit=1, # can skip normals if not
textured=1, # can skip textureCoordinates if not
transparent=0, # need to sort triangle geometry...
mode=None, # the renderpass object
):
"""Shader node implementation"""
from OpenGL.GL import *
from OpenGL.GL import shaders as GL_shaders
from OpenGL.GLU import *
from OpenGL.GLUT import *
from OpenGL import error
from OpenGL.arrays import vbo
from OpenGLContext.arrays import array,reshape
from OpenGLContext import context
from vrml.vrml97 import shaders
import operator
from vrml import field,node,fieldtypes,protofunctions
from OpenGLContext.scenegraph import polygonsort,boundingvolume
from OpenGLContext.arrays import array, transpose
LOCAL_ORIGIN = array( [[0,0,0,1.0]], 'f')
import time, sys
from OpenGL.extensions import alternate
import logging
log = logging.getLogger( __name__ )
class _Buffer( object ):
"""VBO based buffer implementation for generic geometry"""
GL_USAGE_MAPPING = {
'STREAM_DRAW': GL_STREAM_DRAW,
'STREAM_READ': GL_STREAM_READ,
'STREAM_COPY': GL_STREAM_COPY,
'STATIC_DRAW': GL_STATIC_DRAW,
'STATIC_READ': GL_STATIC_READ,
'STATIC_COPY': GL_STATIC_COPY,
def OnTimerFraction( self, event ):
self.sg.rotation = array([0,1,0,event.fraction()*pi*2],'f')
self.appearance.material.diffuseColor = [event.fraction()]*3
self.triggerRedraw( False )
from vrml.vrml97 import basenodes
from OpenGLContext.scenegraph import coordinatebounded
from OpenGLContext.arrays import array
from OpenGL.extensions import alternate
from OpenGL.GL.ARB.point_parameters import *
from OpenGL.GL.EXT.point_parameters import *
import logging
log = logging.getLogger( __name__ )
glPointParameterf = alternate(
glPointParameterf, glPointParameterfARB,glPointParameterfEXT
)
glPointParameterfv = alternate(
glPointParameterfv, glPointParameterfvARB, glPointParameterfEXT
)
RESET_ATTENUATION = array( [1,0,0],'f')
class PointSet(
coordinatebounded.CoordinateBounded,
basenodes.PointSet
):
"""VRML97-style Point-Set object
http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-IS-VRML97WithAmendment1/part1/nodesRef.html#PointSet
"""
def render (
self,
visible = 1, # can skip normals and textures if not
lit = 1, # can skip normals if not
textured = 1, # can skip textureCoordinates if not
transparent = 0, # need to sort triangle geometry...
def Render( self, mode=None ):
if mode.visible and not self._rendered:
self._rendered = True
for char in self.testText:
if not char in self.maps:
dataArray, metrics = self.font.createCharTexture(
char, mode=mode
)
dataArray = array( dataArray[:,:,1] )
dataArray.shape = dataArray.shape + (1,)
map = self.tc.getTexture( dataArray, texture.Texture )
self.maps[char] = (map,metrics)
atlas = self.atlas = self.maps.values()[0][0].atlas
atlas.render()
self.img = ImageTexture.forTexture(
atlas.texture, mode=mode
)
self.shape.appearance.texture = self.img
points = zeros( (len(self.testText)*6,4),'f')
ll = 0,0
for i,char in enumerate(self.testText):
map,metrics = self.maps[char]
# six points for each character...
coords = map.coords()
x,y = ll
w,h = metrics.width/20.,metrics.height/20.
texcoords = array([
[coords[0][0],coords[0][1]],
[coords[1][0],coords[0][1]],
[coords[1][0],coords[1][1]],
[coords[0][0],coords[0][1]],
[coords[1][0],coords[1][1]],
[coords[0][0],coords[1][1]],
],'f')
vertices = array([
(x,y),
(x+w,y),
(x+w,y+h),
(x,y),
(x+w,y+h),
(x,y+h),
],'f')
j = i*6
points[j:j+6,2:] = texcoords
points[j:j+6,:2] = vertices
ll = (x+w,0)
self.vbo = vbo.VBO( points )
self.shape.Render( mode = mode )
if self.vbo is not None:
glUseProgram( self.shader )
self.vbo.bind()
glActiveTexture(GL_TEXTURE1)
glEnable( GL_TEXTURE_2D )
# atlas.render() doesn't work here, need to fix that!
self.img.render( visible=True, mode=mode )
glUniform1i( self.atlas_loc, 1 ) # texture *unit* 0
glUniform3f( self.color_loc, 1.0, 0.0, 0.0 ) # texture *unit* 0
glEnableVertexAttribArray( self.coord__loc )
glVertexAttribPointer(
self.coord__loc,
2, GL_FLOAT,False, 4*4,
self.vbo
)
glEnableVertexAttribArray( self.tex__loc )
glVertexAttribPointer(
self.tex__loc,
2, GL_FLOAT,False, 4*4,
self.vbo+(2*4)
)
glDrawArrays(GL_TRIANGLES, 0, 6*len(self.testText))
self.vbo.unbind()
glDisableVertexAttribArray( self.coord__loc )
glDisableVertexAttribArray( self.tex__loc )
glUseProgram( 0 )
glDisable( GL_TEXTURE_2D )
glActiveTexture(GL_TEXTURE0)
def selectRender(self, mode, toRender, events):
"""Render each path to color buffer
We render all geometry as non-transparent geometry with
unique colour values for each object. We should be able
to handle up to 2**24 objects before that starts failing.
"""
# TODO: allow context to signal that it is "captured" by a
# movement manager that doesn't need select rendering...
# e.g. for an examine manager there's no reason to do select
# render passes...
# TODO: do line-box intersection tests for bounding boxes to
# only render the geometry which is under the cursor
# TODO: render to an FBO instead of the back buffer
# (when available)
# TODO: render at 1/2 size compared to context to create a
# 2x2 selection square and reduce overhead.
glClearColor(0, 0, 0, 0)
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT)
self.visible = False
self.transparent = False
self.lighting = False
self.textured = False
matrix = self.matrix
map = {}
pickPoints = {}
# TODO: this could be faster, and we could do further filtering
# using a frustum a-la select render mode approach...
min_x, min_y = self.getViewport()[2:]
max_x, max_y = 0, 0
pickSize = 2
offset = pickSize // 2
for event in events.values():
x, y = key = tuple(event.getPickPoint())
pickPoints.setdefault(key, []).append(event)
min_x = min((x - offset, min_x))
max_x = max((x + offset, max_x))
min_y = min((y - offset, min_y))
max_y = max((y + offset, max_y))
min_x = int(max((0, min_x)))
min_y = int(max((0, min_y)))
if max_x < min_x or max_y < min_y:
# no pick points were found
return
debugSelection = mode.context.contextDefinition.debugSelection
if not debugSelection:
glScissor(min_x, min_y, int(max_x) - min_x, int(max_y) - min_y)
glEnable(GL_SCISSOR_TEST)
glMatrixMode(GL_MODELVIEW)
try:
idHolder = array([0, 0, 0, 0], 'B')
idSetter = idHolder.view('<I')
for id, (key, mvmatrix, tmatrix, bvolume,
path) in enumerate(toRender):
id = (id + 1) << 12
idSetter[0] = id
glColor4ubv(idHolder)
self.matrix = mvmatrix
self.renderPath = path
glLoadMatrixf(mvmatrix)
path[-1].Render(mode=self)
map[id] = path
pixel = array([0, 0, 0, 0], 'B')
depth_pixel = array([[0]], 'f')
for point, eventSet in pickPoints.items():
# get the pixel colour (id) under the cursor.
glReadPixels(point[0], point[1], 1, 1, GL_RGBA,
GL_UNSIGNED_BYTE, pixel)
lpixel = long(pixel.view('<I')[0])
paths = map.get(lpixel, [])
event.setObjectPaths([paths])
# get the depth value under the cursor...
glReadPixels(point[0], point[1], 1, 1, GL_DEPTH_COMPONENT,
GL_FLOAT, depth_pixel)
event.viewCoordinate = point[0], point[1], depth_pixel[0][0]
event.modelViewMatrix = matrix
event.projectionMatrix = self.projection
event.viewport = self.viewport
if hasattr(mode.context, 'ProcessEvent'):
mode.context.ProcessEvent(event)
finally:
glColor4f(1.0, 1.0, 1.0, 1.0)
glDisable(GL_COLOR_MATERIAL)
glEnable(GL_LIGHTING)
glDisable(GL_SCISSOR_TEST)
from OpenGL.GL import *
from OpenGLContext.arrays import array
from OpenGLContext.scenegraph.basenodes import *
import string, time
## Control points for the bezier surface
ctrlpoints = array([
[[-1.5, -1.5, 4.0] ,
[-0.5, -1.5, 2.0] ,
[0.5, -1.5, -1.0] ,
[1.5, -1.5, 2.0]] ,
[[-1.5, -0.5, 1.0] ,
[-0.5, -0.5, 3.0] ,
[0.5, -0.5, 0.0] ,
[1.5, -0.5, -1.0]] ,
[[-1.5, 0.5, 4.0] ,
[-0.5, 0.5, 0.0] ,
[0.5, 0.5, 3.0] ,
[1.5, 0.5, 4.0]] ,
[[-1.5, 1.5, -2.0] ,
[-0.5, 1.5, -2.0] ,
[0.5, 1.5, 0.0] ,
[1.5, 1.5, -1.0]] ,
], 'f' )
## Texture control points
texpts = array([
[[0.0, 0.0],
[0.0, 1.0]],
[[1.0, 0.0],
[1.0, 1.0]],
def selectRender( self, mode, toRender, events ):
"""Render each path to color buffer
We render all geometry as non-transparent geometry with
unique colour values for each object. We should be able
to handle up to 2**24 objects before that starts failing.
"""
# TODO: allow context to signal that it is "captured" by a
# movement manager that doesn't need select rendering...
# e.g. for an examine manager there's no reason to do select
# render passes...
# TODO: do line-box intersection tests for bounding boxes to
# only render the geometry which is under the cursor
# TODO: render to an FBO instead of the back buffer
# (when available)
# TODO: render at 1/2 size compared to context to create a
# 2x2 selection square and reduce overhead.
glClearColor( 0,0,0, 0 )
glClear( GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT )
self.visible = False
self.transparent = False
self.lighting = False
self.textured = False
matrix = self.matrix
map = {}
pickPoints = {}
# TODO: this could be faster, and we could do further filtering
# using a frustum a-la select render mode approach...
min_x,min_y = self.getViewport()[2:]
max_x,max_y = 0,0
pickSize = 2
offset = pickSize//2
for event in events.values():
x,y = key = tuple(event.getPickPoint())
pickPoints.setdefault( key, []).append( event )
min_x = min((x-offset,min_x))
max_x = max((x+offset,max_x))
min_y = min((y-offset,min_y))
max_y = max((y+offset,max_y))
min_x = int(max((0,min_x)))
min_y = int(max((0,min_y)))
if max_x < min_x or max_y < min_y:
# no pick points were found
return
debugSelection = mode.context.contextDefinition.debugSelection
if not debugSelection:
glScissor( min_x,min_y,int(max_x)-min_x,int(max_y)-min_y)
glEnable( GL_SCISSOR_TEST )
glMatrixMode( GL_MODELVIEW )
try:
idHolder = array( [0,0,0,0], 'B' )
idSetter = idHolder.view( '<I' )
for id,(key,mvmatrix,tmatrix,bvolume,path) in enumerate(toRender):
id = (id+1) << 12
idSetter[0] = id
glColor4ubv( idHolder )
self.matrix = mvmatrix
self.renderPath = path
glLoadMatrixf( mvmatrix )
path[-1].Render( mode=self )
map[id] = path
pixel = array([0,0,0,0],'B')
depth_pixel = array([[0]],'f')
for point,eventSet in pickPoints.items():
# get the pixel colour (id) under the cursor.
glReadPixels( point[0],point[1],1,1,GL_RGBA,GL_UNSIGNED_BYTE, pixel )
lpixel = long( pixel.view( '<I' )[0] )
paths = map.get( lpixel, [] )
event.setObjectPaths( [paths] )
# get the depth value under the cursor...
glReadPixels(
point[0],point[1],1,1,GL_DEPTH_COMPONENT,GL_FLOAT,depth_pixel
)
event.viewCoordinate = point[0],point[1],depth_pixel[0][0]
event.modelViewMatrix = matrix
event.projectionMatrix = self.projection
event.viewport = self.viewport
if hasattr( mode.context, 'ProcessEvent'):
mode.context.ProcessEvent( event )
finally:
glColor4f( 1.0,1.0,1.0, 1.0)
glDisable( GL_COLOR_MATERIAL )
glEnable( GL_LIGHTING )
glDisable( GL_SCISSOR_TEST )
def Render(self, mode=None):
if mode.visible and not self._rendered:
self._rendered = True
for char in self.testText:
if not char in self.maps:
dataArray, metrics = self.font.createCharTexture(char,
mode=mode)
dataArray = array(dataArray[:, :, 1])
dataArray.shape = dataArray.shape + (1, )
map = self.tc.getTexture(dataArray, texture.Texture)
self.maps[char] = (map, metrics)
atlas = self.atlas = self.maps.values()[0][0].atlas
atlas.render()
self.img = ImageTexture.forTexture(atlas.texture, mode=mode)
self.shape.appearance.texture = self.img
points = zeros((len(self.testText) * 6, 4), 'f')
ll = 0, 0
for i, char in enumerate(self.testText):
map, metrics = self.maps[char]
# six points for each character...
coords = map.coords()
x, y = ll
w, h = metrics.width / 20., metrics.height / 20.
texcoords = array([
[coords[0][0], coords[0][1]],
[coords[1][0], coords[0][1]],
[coords[1][0], coords[1][1]],
[coords[0][0], coords[0][1]],
[coords[1][0], coords[1][1]],
[coords[0][0], coords[1][1]],
], 'f')
vertices = array([
(x, y),
(x + w, y),
(x + w, y + h),
(x, y),
(x + w, y + h),
(x, y + h),
], 'f')
j = i * 6
points[j:j + 6, 2:] = texcoords
points[j:j + 6, :2] = vertices
ll = (x + w, 0)
self.vbo = vbo.VBO(points)
self.shape.Render(mode=mode)
if self.vbo is not None:
glUseProgram(self.shader)
self.vbo.bind()
glActiveTexture(GL_TEXTURE1)
glEnable(GL_TEXTURE_2D)
# atlas.render() doesn't work here, need to fix that!
self.img.render(visible=True, mode=mode)
glUniform1i(self.atlas_loc, 1) # texture *unit* 0
glUniform3f(self.color_loc, 1.0, 0.0, 0.0) # texture *unit* 0
glEnableVertexAttribArray(self.coord__loc)
glVertexAttribPointer(self.coord__loc, 2, GL_FLOAT, False, 4 * 4,
self.vbo)
glEnableVertexAttribArray(self.tex__loc)
glVertexAttribPointer(self.tex__loc, 2, GL_FLOAT, False, 4 * 4,
self.vbo + (2 * 4))
glDrawArrays(GL_TRIANGLES, 0, 6 * len(self.testText))
self.vbo.unbind()
glDisableVertexAttribArray(self.coord__loc)
glDisableVertexAttribArray(self.tex__loc)
glUseProgram(0)
glDisable(GL_TEXTURE_2D)
glActiveTexture(GL_TEXTURE0)
