def resetCamera(self, viewer):
camera = viewer.getCamera()
camera.setComputeNearFarMode(False)
# camera = osg.Camera()
camera.setViewport(osg.Viewport(0, 0, self.width(), self.height()))
# camera.setReferenceFrame(osg.Transform.ABSOLUTE_RF)
CAMERA_ANGLE = 45.0
CAMERA_Z_TRANSLATE = 2.4142135623730949 #1.0 / math.tan(math.radians(CAMERA_ANGLE / 2.0))
cameraPosition = [0.0, 0.0, CAMERA_Z_TRANSLATE]
camera.setProjectionMatrixAsPerspective(
CAMERA_ANGLE,
float(self.width()) / float(self.height()), 0.1, 100.0)
eye = osg.Vec3d(cameraPosition[0], cameraPosition[1],
cameraPosition[2])
center = osg.Vec3d(0, 0, 0)
up = osg.Vec3d(0, 1, 0)
camera.setViewMatrixAsLookAt(eye, center, up)
camera.getOrCreateStateSet().setAttributeAndModes(
osg.BlendFunc(GL.GL_ONE, GL.GL_ONE_MINUS_SRC_ALPHA))
camera.getOrCreateStateSet().setMode(GL.GL_DEPTH_TEST, False)
camera.getOrCreateStateSet().setMode(GL.GL_DEPTH_WRITEMASK, False)
camera.getOrCreateStateSet().setMode(GL.GL_LIGHTING, False)
material = osg.Material()
color = osg.Vec4(1.0, 1.0, 1.0, 1.0)
material.setDiffuse(osg.Material.FRONT_AND_BACK, color)
material.setAmbient(osg.Material.FRONT_AND_BACK, color)
camera.getOrCreateStateSet().setAttributeAndModes(material)
camera.setClearColor(osg.Vec4(0, 0, 0, 0))
camera.setClearMask(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT)
camera.setCullMask(VISIBLE_CULL_MASK)
if not self.gw:
raise Exception("GraphicsWindow not yet created")
self.camera = camera
# viewer.getCamera().setViewport(osg.Viewport(0,0, self.width(), self.height()))
# viewer.getCamera().addChild(camera)
camera.setGraphicsContext(self.gw)
def createAxis():
geode = osg.Geode()
geometry = osg.Geometry()
vertices = osg.Vec3Array()
vertices.push_back(osg.Vec3(0.0, 0.0, 0.0))
vertices.push_back(osg.Vec3(1.0, 0.0, 0.0))
vertices.push_back(osg.Vec3(0.0, 0.0, 0.0))
vertices.push_back(osg.Vec3(0.0, 1.0, 0.0))
vertices.push_back(osg.Vec3(0.0, 0.0, 0.0))
vertices.push_back(osg.Vec3(0.0, 0.0, 1.0))
geometry.setVertexArray(vertices)
colors = osg.Vec4Array()
colors.push_back(osg.Vec4(1.0, 0.0, 0.0, 1.0))
colors.push_back(osg.Vec4(1.0, 0.0, 0.0, 1.0))
colors.push_back(osg.Vec4(0.0, 1.0, 0.0, 1.0))
colors.push_back(osg.Vec4(0.0, 1.0, 0.0, 1.0))
colors.push_back(osg.Vec4(0.0, 0.0, 1.0, 1.0))
colors.push_back(osg.Vec4(0.0, 0.0, 1.0, 1.0))
geometry.setColorArray(colors)
geometry.setColorBinding(osg.Geometry.BIND_PER_VERTEX)
geometry.addPrimitiveSet(osg.DrawArrays(osg.PrimitiveSet.LINES, 0, 6))
geode.addDrawable(geometry)
return geode
def camera_build(self):
texture = self.texture_build()
camera = osg.Camera()
camera.setViewport(osg.Viewport(0, 0, self.width(), self.height()))
camera.setReferenceFrame(osg.Transform.ABSOLUTE_RF)
camera.setRenderOrder(osg.Camera.PRE_RENDER)
camera.setRenderTargetImplementation(osg.Camera.FRAME_BUFFER_OBJECT)
camera.attach(osg.Camera.COLOR_BUFFER, texture, 0, 0, False, 0, 0)
CAMERA_ANGLE = 45.0
CAMERA_Z_TRANSLATE = 2.4142135623730949 #1.0 / math.tan(math.radians(CAMERA_ANGLE / 2.0))
cameraPosition = [0.0, 0.0, CAMERA_Z_TRANSLATE]
camera.setProjectionMatrixAsPerspective(
CAMERA_ANGLE,
float(self.width()) / float(self.height()), 0.1, 10000.0)
eye = osg.Vec3d(cameraPosition[0], cameraPosition[1],
cameraPosition[2])
center = osg.Vec3d(0, 0, 0)
up = osg.Vec3d(0, 1, 0)
camera.setViewMatrixAsLookAt(eye, center, up)
camera.getOrCreateStateSet().setAttributeAndModes(
osg.BlendFunc(GL.GL_ONE, GL.GL_ONE_MINUS_SRC_ALPHA))
camera.getOrCreateStateSet().setMode(GL.GL_DEPTH_TEST, False)
camera.getOrCreateStateSet().setMode(GL.GL_DEPTH_WRITEMASK, False)
camera.getOrCreateStateSet().setMode(GL.GL_LIGHTING, False)
material = osg.Material()
color = osg.Vec4(1.0, 1.0, 1.0, 1.0)
material.setDiffuse(osg.Material.FRONT_AND_BACK, color)
material.setAmbient(osg.Material.FRONT_AND_BACK, color)
camera.getOrCreateStateSet().setAttributeAndModes(material)
camera.setClearColor(osg.Vec4(0, 0, 0, 0))
camera.setClearMask(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT)
return camera, texture
#!/usr/bin/env python
#dynamicosg.py
__author__ = ["Rene Molenaar"]
__url__ = ("http://code.google.com/p/osgswig/")
__version__ = "2.0.0"
__doc__ = """ This OpenSceneGraph in Python example shows creating a\
pickhandler that adds a wirebox and a callback to \
a selected node \
____Rene Molenaar 2008 """
#import the needed modules
import osg, osgDB, osgGA, osgViewer, osgUtil
selmat = osg.Material()
selmat.setDiffuse(osg.Material.FRONT_AND_BACK, osg.Vec4(0.9, 0.1, 0.0, 1.0))
selmat.setEmission(osg.Material.FRONT_AND_BACK, osg.Vec4(0.8, 0.1, 0.0, 1.0))
selmat.setAmbient(osg.Material.FRONT_AND_BACK, osg.Vec4(0.5, 0.5, 0.5, 1))
def createWireBox(node):
"""create a bounding box for the node """
#create an empty bounding box
bb = osg.BoundingBox()
#if we have a geode, expand by the drawables bounding box, else use the bounding sphere
geode = osg.NodeToGeode(node)
if geode:
print "geode found"
for i in range(geode.getNumDrawables()):
def createPreRenderSubGraph(subgraph, tex_width, tex_height, renderImplementation, \
useImage, useTextureRectangle, useHDR, \
samples, colorSamples):
if not subgraph:
return 0
# create a group to contain the flag and the pre rendering camera.
parent = osg.Group()
#texture to render to and to use for rendering of flag.
texture = 0
if (useTextureRectangle):
textureRect = osg.TextureRectangle()
textureRect.setTextureSize(tex_width, tex_height)
textureRect.setInternalFormat(osg.GL_RGBA)
textureRect.setFilter(osg.Texture2D.MIN_FILTER, osg.Texture2D.LINEAR)
textureRect.setFilter(osg.Texture2D.MAG_FILTER, osg.Texture2D.LINEAR)
texture = textureRect
else:
texture2D = osg.Texture2D()
texture2D.setTextureSize(tex_width, tex_height)
texture2D.setInternalFormat(osg.GL_RGBA)
texture2D.setFilter(osg.Texture2D.MIN_FILTER, osg.Texture2D.LINEAR)
texture2D.setFilter(osg.Texture2D.MAG_FILTER, osg.Texture2D.LINEAR)
texture = texture2D
if useHDR:
texture.setInternalFormat(osg.GL_RGBA16F_ARB)
texture.setSourceFormat(osg.GL_RGBA)
texture.setSourceType(osg.GL_FLOAT)
#first create the geometry of the flag of which to view.
if True:
# create the to visualize.
polyGeom = osg.Geometry()
polyGeom.setName("PolyGeom")
polyGeom.setDataVariance(osg.Object.DYNAMIC)
polyGeom.setSupportsDisplayList(False)
origin = osg.Vec3(0.0, 0.0, 0.0)
xAxis = osg.Vec3(1.0, 0.0, 0.0)
yAxis = osg.Vec3(0.0, 0.0, 1.0)
zAxis = osg.Vec3(0.0, -1.0, 0.0)
height = 100.0
width = 200.0
noSteps = 20
vertices = osg.Vec3Array()
bottom = osg.Vec3(origin[0], origin[1], origin[2])
top = osg.Vec3(origin[0], origin[1], origin[2])
top[2] += height
dv = xAxis * (width / (float(noSteps - 1)))
texcoords = osg.Vec2Array()
# note, when we use TextureRectangle we have to scale the tex coords up to compensate.
bottom_texcoord = osg.Vec2(0.0, 0.0)
if useTextureRectangle:
ltex_height = tex_height
ltex_width = tex_width
else:
ltex_height = 1.0
ltex_width = 1.0
top_texcoord = osg.Vec2(0.0, ltex_height)
dv_texcoord = osg.Vec2(ltex_width / float((noSteps - 1)), 0.0)
for i in range(noSteps):
vertices.push_back(top)
vertices.push_back(bottom)
top += dv
bottom += dv
texcoords.push_back(top_texcoord)
texcoords.push_back(bottom_texcoord)
top_texcoord += dv_texcoord
bottom_texcoord += dv_texcoord
# pass the created vertex array to the points geometry object.
polyGeom.setVertexArray(vertices)
polyGeom.setTexCoordArray(0, texcoords)
colors = osg.Vec4Array()
colors.push_back(osg.Vec4(1.0, 1.0, 1.0, 1.0))
polyGeom.setColorArray(colors)
polyGeom.setColorBinding(osg.Geometry.BIND_OVERALL)
polyGeom.addPrimitiveSet(
osg.DrawArrays(osg.PrimitiveSet.QUAD_STRIP, 0, vertices.size()))
# new we need to add the texture to the Drawable, we do so by creating a
# StateSet to contain the Texture StateAttribute.
stateset = osg.StateSet()
stateset.setTextureAttributeAndModes(0, texture, osg.StateAttribute.ON)
polyGeom.setStateSet(stateset)
#changes to the geometry
polyGeom.setUpdateCallback(
MyGeometryCallback(origin, xAxis, yAxis, zAxis, 1.0, 1.0 / width,
0.2).__disown__())
geode = osg.Geode()
geode.addDrawable(polyGeom)
parent.addChild(geode)
# then create the camera node to do the render to texture
if True:
camera = osg.Camera()
# set up the background color and clear mask.
camera.setClearColor(osg.Vec4(0.1, 0.1, 0.3, 1.0))
camera.setClearMask(osg.GL_COLOR_BUFFER_BIT | osg.GL_DEPTH_BUFFER_BIT)
bs = subgraph.getBound()
if not bs.valid():
return subgraph
znear = 1.0 * bs.radius()
zfar = 3.0 * bs.radius()
# 2:1 aspect ratio as per flag geometry below.
proj_top = 0.25 * znear
proj_right = 0.5 * znear
znear *= 0.9
zfar *= 1.1
# set up projection.
camera.setProjectionMatrixAsFrustum(-proj_right, proj_right, -proj_top,
proj_top, znear, zfar)
# set view
camera.setReferenceFrame(osg.Transform.ABSOLUTE_RF)
camera.setViewMatrixAsLookAt(osg.Vec3d(bs.center())-osg.Vec3d(0.0,2.0,0.0)*bs.radius(), \
osg.Vec3d(bs.center()),\
osg.Vec3d(0.0,0.0,1.0))
# set viewport
camera.setViewport(0, 0, tex_width, tex_height)
# set the camera to render before the main camera.
camera.setRenderOrder(osg.Camera.PRE_RENDER)
# tell the camera to use OpenGL frame buffer object where supported.
camera.setRenderTargetImplementation(renderImplementation)
if useImage:
image = osg.Image()
#image.allocateImage(tex_width, tex_height, 1, GL_RGBA, GL_UNSIGNED_BYTE);
image.allocateImage(tex_width, tex_height, 1, osg.GL_RGBA,
osg.GL_FLOAT)
# attach the image so its copied on each frame.
camera.attach(osg.Camera.COLOR_BUFFER, image, samples,
colorSamples)
camera.setPostDrawCallback(MyCameraPostDrawCallback(image))
# Rather than attach the texture directly to illustrate the texture's ability to
# detect an image update and to subload the image onto the texture. You needn't
# do this when using an Image for copying to, as a separate camera.attach(..)
# would suffice as well, but we'll do it the long way round here just for demonstration
# purposes (long way round meaning we'll need to copy image to main memory, then
# copy it back to the graphics card to the texture in one frame).
# The long way round allows us to manually modify the copied image via the callback
# and then let this modified image by reloaded back.
texture.setImage(0, image)
else:
# attach the texture and use it as the color buffer.
camera.attach(osg.Camera.COLOR_BUFFER, texture, 0, 0, False,
samples, colorSamples)
# add subgraph to render
camera.addChild(subgraph)
parent.addChild(camera)
return parent
import ctypes import osgDB, osgViewer, osg, osgGA, osgAnimation floatKeys = osgAnimation.FloatKeyframeContainer() key0 = osgAnimation.FloatKeyframe(0.0, 1.0) floatKeys.push_back(key0) vec3Keys = osgAnimation.Vec3KeyframeContainer() key0 = osgAnimation.Vec3Keyframe(0.0, osg.Vec3(1, 2, 3)) vec3Keys.push_back(key0) vec4Keys = osgAnimation.Vec4KeyframeContainer() key0 = osgAnimation.Vec4Keyframe(0.0, osg.Vec4(1, 2, 3, 4)) vec4Keys.push_back(key0)
pyramidGeometry.addPrimitiveSet(pyramidFace2) pyramidFace3 = osg.DrawElementsUInt(osg.PrimitiveSet.TRIANGLES, 0) pyramidFace3.push_back(2) pyramidFace3.push_back(3) pyramidFace3.push_back(4) pyramidGeometry.addPrimitiveSet(pyramidFace3) pyramidFace4 = osg.DrawElementsUInt(osg.PrimitiveSet.TRIANGLES, 0) pyramidFace4.push_back(3) pyramidFace4.push_back(0) pyramidFace4.push_back(4) pyramidGeometry.addPrimitiveSet(pyramidFace4) colors = osg.Vec4Array() colors.push_back(osg.Vec4(1, 0, 0, 1)) #index 0 red colors.push_back(osg.Vec4(0, 1, 0, 1)) #index 1 green colors.push_back(osg.Vec4(0, 0, 1, 1)) #index 2 blue colors.push_back(osg.Vec4(1, 1, 1, 1)) #index 3 white colorIndexArray = osg.UIntArray() colorIndexArray.push_back(0) colorIndexArray.push_back(1) colorIndexArray.push_back(2) colorIndexArray.push_back(3) colorIndexArray.push_back(0) pyramidGeometry.setColorArray(colors) pyramidGeometry.setColorIndices(colorIndexArray) pyramidGeometry.setColorBinding(osg.Geometry.BIND_PER_VERTEX)
