class Renderer(QOpenGLWidget):
class ActorType(IntEnum):
CONE = 0,
CUBE = 1,
CYLINDER = 2,
FLOOR = 3,
ICOSAHEDRON = 4,
PYRAMID_1 = 5,
PYRAMID_2 = 6
SPHERE_POLAR = 7,
SPHERE_ICOS = 8,
## initialization
def __init__(self, parent=None, **kwargs):
"""Initialize OpenGL version profile."""
super(Renderer, self).__init__(parent)
self._parent = parent
## deal with options
self._lighting = kwargs.get("lighting", True)
self._antialiasing = kwargs.get("antialiasing", False)
self._statistics = kwargs.get("statistics", True)
## define home orientation
self._home_rotation = QQuaternion.fromAxisAndAngle(
QVector3D(1.0, 0.0, 0.0), 25.0) * QQuaternion.fromAxisAndAngle(
QVector3D(0.0, 1.0, 0.0), -50.0)
## define scene trackball
self._trackball = Trackball(velocity=0.05,
axis=QVector3D(0.0, 1.0, 0.0),
mode=Trackball.TrackballMode.Planar,
rotation=self._home_rotation,
paused=True)
## create main scene
self._world = World(self, home_position=QVector3D(0, 0, 3.5))
## do not animate
self._animating = True
## not yet initialized
self._initialized = False
self.setAutoFillBackground(False)
self.currentActor_ = None
def printOpenGLInformation(self, format, verbosity=0):
print("\n*** OpenGL context information ***")
print("Vendor: {}".format(
GL.glGetString(GL.GL_VENDOR).decode('UTF-8')))
print("Renderer: {}".format(
GL.glGetString(GL.GL_RENDERER).decode('UTF-8')))
print("OpenGL version: {}".format(
GL.glGetString(GL.GL_VERSION).decode('UTF-8')))
print("Shader version: {}".format(
GL.glGetString(GL.GL_SHADING_LANGUAGE_VERSION).decode('UTF-8')))
print("Maximum samples: {}".format(GL.glGetInteger(GL.GL_MAX_SAMPLES)))
print("\n*** QSurfaceFormat from context ***")
print("Depth buffer size: {}".format(format.depthBufferSize()))
print("Stencil buffer size: {}".format(format.stencilBufferSize()))
print("Samples: {}".format(format.samples()))
print("Red buffer size: {}".format(format.redBufferSize()))
print("Green buffer size: {}".format(format.greenBufferSize()))
print("Blue buffer size: {}".format(format.blueBufferSize()))
print("Alpha buffer size: {}".format(format.alphaBufferSize()))
#print("\nAvailable extensions:")
#for k in range(0, GL.glGetIntegerv(GL.GL_NUM_EXTENSIONS)-1):
# print("{},".format(GL.glGetStringi(GL.GL_EXTENSIONS, k).decode('UTF-8')))
#print("{}".format(GL.glGetStringi(GL.GL_EXTENSIONS, k+1).decode('UTF-8')))
def initializeGL(self):
"""Apply OpenGL version profile and initialize OpenGL functions."""
if not self._initialized:
self.printOpenGLInformation(self.context().format())
## create gnomon
self._gnomon = Gnomon(self)
## update cameras
self._world.camera.setRotation(
self._trackball.rotation().inverted())
self._gnomon.camera.setRotation(
self._trackball.rotation().inverted())
GL.glEnable(GL.GL_DEPTH_TEST)
GL.glEnable(GL.GL_DEPTH_CLAMP)
#GL.glEnable(GL.GL_CULL_FACE)
GL.glEnable(GL.GL_MULTISAMPLE)
GL.glEnable(GL.GL_FRAMEBUFFER_SRGB)
## attempt at line antialising
if self._antialiasing:
GL.glEnable(GL.GL_POLYGON_SMOOTH)
GL.glEnable(GL.GL_BLEND)
GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA)
GL.glHint(GL.GL_LINE_SMOOTH_HINT, GL.GL_NICEST)
GL.glHint(GL.GL_POLYGON_SMOOTH_HINT, GL.GL_NICEST)
GL.glPointSize(5)
GL.glLineWidth(1)
## clear color
GL.glClearColor(0.75, 0.76, 0.76, 0.0)
## initialize scene
self._world.initialize()
## initialize gnomon
self._gnomon.initialize()
## timer for immediate update
self._timer = QTimer(self)
self._timer.setTimerType(Qt.PreciseTimer)
self._timer.timeout.connect(self.updateScene)
self._timer.start()
## timer for measuring elapsed time
self._elapsed_timer = QElapsedTimer()
self._elapsed_timer.restart()
self._frameElapsed = 0
self._gpuElapsed = 0
self._initialized = True
###
### Creates Scenes
###
SCENE = 0 #polar spheres
#SCENE = 1 #tessalation spheres
#SCENE = 2 #test scene
if (SCENE == 0):
xform1 = QMatrix4x4()
xform2 = QMatrix4x4()
xform3 = QMatrix4x4()
xform1.translate(2.0, 0.0, 0.0)
xform2.translate(-3.0, 0.0, 0.0)
xform3.translate(0.0, 0.0, 0.0)
self._actor1 = SpherePolar(self._world,
1.0,
7,
7,
transform=xform1)
self._actor2 = SpherePolar(self._world,
2.0,
12,
15,
transform=xform2)
self._actor3 = SpherePolar(self._world,
1.0,
40,
40,
transform=xform3)
self._world.addActor(self._actor1)
self._world.addActor(self._actor2)
self._world.addActor(self._actor3)
elif (SCENE == 1):
xform1 = QMatrix4x4()
xform2 = QMatrix4x4()
xform3 = QMatrix4x4()
xform1.translate(2.0, 0.0, 0.0)
xform2.translate(-3.0, 0.0, 0.0)
xform3.translate(0.0, 0.0, 0.0)
self._actor1 = SphereIcos(self._world,
radius=1.0,
innerLevel=2,
outerLevel=2,
transform=xform1,
mode=GL.GL_PATCHES)
self._actor2 = SphereIcos(self._world,
radius=2.0,
innerLevel=4,
outerLevel=4,
transform=xform2,
mode=GL.GL_PATCHES)
self._actor3 = SphereIcos(self._world,
radius=1.0,
innerLevel=5,
outerLevel=5,
transform=xform3,
mode=GL.GL_PATCHES,
colors=True)
self._world.addActor(self._actor1)
self._world.addActor(self._actor2)
self._world.addActor(self._actor3)
elif (SCENE == 2):
xform1 = QMatrix4x4()
xform1.translate(0.0, 0.0, 0.0)
#self._actor1 = Icosahedron(self._world, transform=xform1, colors=True)
self._actor1 = SphereIcos(self._world,
radius=1.0,
innerLevel=1,
outerLevel=5,
transform=xform1,
mode=GL.GL_PATCHES,
colors=True)
self._world.addActor(self._actor1)
else:
## initialize scene
self._world.initialize()
## initialize gnomon
self._gnomon.initialize()
## initialize OpenGL timer
self._query = GL.glGenQueries(1)
def clear(self):
"""Clear scene"""
self._world.clear()
self.update()
def renderTimeEstimates(self):
return [self._frameElapsed, self._gpuElapsed]
@property
def lighting(self):
return self._lighting
def setDrawStyle(self, style):
self._draw_style = style
def activeSceneCamera(self):
"""Returns main scene camera"""
return self._world.camera
def setAnimating(self, value):
"""Sets continuous update"""
self._animating = value
def isAnimating(self):
"""Returns whether continous update is active"""
return self._animating
def updateScene(self):
"""Schedule an update to the scene"""
if self.isAnimating():
self.update()
def renderScene(self):
"""Draw main scene"""
## set scene rotation
self._world.camera.setRotation(self._trackball.rotation().inverted())
self._gnomon.camera.setRotation(self._trackball.rotation().inverted())
self._world.render()
## render gnomon
self._gnomon.render()
def paintGL(self):
"""Draw scene"""
## record render time statistics
if self._statistics:
## begin GPU time query
GL.glBeginQuery(GL.GL_TIME_ELAPSED, self._query)
## render scene
self.renderScene()
## finish GPU time query
GL.glEndQuery(GL.GL_TIME_ELAPSED)
## record render time statistics, need to stall the CPU a bit
ready = False
while not ready:
ready = GL.glGetQueryObjectiv(self._query,
GL.GL_QUERY_RESULT_AVAILABLE)
self._gpuElapsed = GL.glGetQueryObjectuiv(
self._query, GL.GL_QUERY_RESULT) / 1000000.0
## delete query object
#GL.glDeleteQueries( self._query )
else:
## render scene
self.renderScene()
self._frameElapsed = self._elapsed_timer.restart()
def resizeGL(self, width, height):
""" Called by the Qt libraries whenever the window is resized"""
self._world.camera.setAspectRatio(
width / float(height if height > 0.0 else 1.0))
def pan(self, point, state='start'):
"""Move camera according to mouse move"""
if state == 'start':
self._lastPanningPos = point
elif state == 'move':
delta = QLineF(self._lastPanningPos, point)
self._lastPanningPos = point
direction = QVector3D(-delta.dx(), -delta.dy(), 0.0).normalized()
newpos = self._world.camera.position + delta.length(
) * 2.0 * direction
self._world.camera.setPosition(newpos)
def mousePressEvent(self, event):
""" Called by the Qt libraries whenever the window receives a mouse click."""
super(Renderer, self).mousePressEvent(event)
if event.isAccepted():
return
if event.buttons() & Qt.LeftButton:
self._trackball.press(self._pixelPosToViewPos(event.localPos()),
QQuaternion())
self._trackball.start()
event.accept()
if not self.isAnimating():
self.update()
elif event.buttons() & Qt.RightButton:
self.pan(self._pixelPosToViewPos(event.localPos()), state='start')
self.update()
def mouseMoveEvent(self, event):
"""Called by the Qt libraries whenever the window receives a mouse move/drag event."""
super(Renderer, self).mouseMoveEvent(event)
if event.isAccepted():
return
if event.buttons() & Qt.LeftButton:
self._trackball.move(self._pixelPosToViewPos(event.localPos()),
QQuaternion())
event.accept()
if not self.isAnimating():
self.update()
elif event.buttons() & Qt.RightButton:
self.pan(self._pixelPosToViewPos(event.localPos()), state='move')
self.update()
def mouseReleaseEvent(self, event):
""" Called by the Qt libraries whenever the window receives a mouse release."""
super(Renderer, self).mouseReleaseEvent(event)
if event.isAccepted():
return
if event.button() == Qt.LeftButton:
self._trackball.release(self._pixelPosToViewPos(event.localPos()),
QQuaternion())
event.accept()
if not self.isAnimating():
self._trackball.stop()
self.update()
def wheelEvent(self, event):
"""Process mouse wheel movements"""
super(Renderer, self).wheelEvent(event)
self.zoom(-event.angleDelta().y() / 950.0)
event.accept()
## scene is dirty, please update
self.update()
def zoom(self, diffvalue):
"""Zooms in/out the active camera"""
multiplicator = math.exp(diffvalue)
## get a hold of the current active camera
camera = self._world.camera
if camera.lens == Camera.Lens.Orthographic:
# Since there's no perspective, "zooming" in the original sense
# of the word won't have any visible effect. So we just increase
# or decrease the field-of-view values of the camera instead, to
# "shrink" the projection size of the model / scene.
camera.scaleHeight(multiplicator)
else:
old_focal_dist = camera.focalDistance
new_focal_dist = old_focal_dist * multiplicator
direction = camera.orientation * QVector3D(0.0, 0.0, -1.0)
newpos = camera.position + (new_focal_dist -
old_focal_dist) * -direction
camera.setPosition(newpos)
camera.setFocalDistance(new_focal_dist)
def viewFront(self):
"""Make camera face the front side of the scene"""
self._trackball.reset(QQuaternion())
self.update()
def viewBack(self):
"""Make camera face the back side of the scene"""
self._trackball.reset(
QQuaternion.fromAxisAndAngle(QVector3D(0.0, 1.0, 0.0), 180.0))
self.update()
def viewLeft(self):
"""Make camera face the left side of the scene"""
self._trackball.reset(
QQuaternion.fromAxisAndAngle(QVector3D(0.0, 1.0, 0.0), -90.0))
self.update()
def viewRight(self):
"""Make camera face the right side of the scene"""
self._trackball.reset(
QQuaternion.fromAxisAndAngle(QVector3D(0.0, 1.0, 0.0), 90.0))
self.update()
def viewTop(self):
"""Make camera face the top side of the scene"""
self._trackball.reset(
QQuaternion.fromAxisAndAngle(QVector3D(1.0, 0.0, 0.0), 90.0))
self.update()
def viewBottom(self):
"""Make camera face the bottom side of the scene"""
self._trackball.reset(
QQuaternion.fromAxisAndAngle(QVector3D(1.0, 0.0, 0.0), -90.0))
self.update()
def createGridLines(self):
"""Set gridlines"""
self.makeCurrent()
self._world.createGridLines()
self.doneCurrent()
def cameraLensChanged(self, lens):
"""Switch world's. camera lens"""
self._world.setCameraLens(lens)
self._gnomon.setCameraLens(lens)
self.update()
def storeCamera(self):
"""Store world's camera parameters"""
self._world.storeCamera()
def recallCamera(self):
"""Recall camera parameters"""
self._world.recallCamera()
self._trackball.reset(self._world.camera.rotation.inverted())
self.update()
def resetCamera(self):
"""Reset world's camera parameters"""
self._world.resetCamera()
self._trackball.reset(self._home_rotation)
self.update()
def drawStyleChanged(self, index):
self._world.setDrawStyle(Scene.DrawStyle.Styles[index])
self.update()
def lightingChanged(self, state):
self._world.setLighting(state)
self.update()
def shadingChanged(self, index):
self._world.setShading(Scene.Shading.Types[index])
self.update()
def headLightChanged(self, state):
self._world.light.setHeadLight(state)
self.update()
def directionalLightChanged(self, state):
self._world.light.setDirectional(state)
self.update()
def enableProfiling(self, enable):
self._statistics = enable
def enableAnimation(self, enable):
self.setAnimating(enable)
if not enable:
self._trackball.stop()
def _pixelPosToViewPos(self, point):
return QPointF(2.0 * float(point.x()) / self.width() - 1.0,
1.0 - 2.0 * float(point.y()) / self.height())
def changeActor(self, index):
self.makeCurrent()
self.currentActor_.destroy()
self._world.removeActor(self.currentActor_)
xform = QMatrix4x4()
if index == Renderer.ActorType.CONE:
xform.translate(0, 1, 0)
self.currentActor_ = Cone(self._world)
elif index == Renderer.ActorType.CUBE:
xform.translate(0, 0.5, 0)
self.currentActor_ = Cube(self._world, transform=xform)
elif index == Renderer.ActorType.CYLINDER:
xform.translate(0, 1, 0)
self.currentActor_ = Cylinder(self._world, transform=xform)
elif index == Renderer.ActorType.FLOOR:
self.currentActor_ = Floor(self._world, transform=xform)
elif index == Renderer.ActorType.ICOSAHEDRON:
xform.translate(0, -2.0, 0)
self.currentActor_ = Icosahedron(self._world, transform=xform)
elif index == Renderer.ActorType.PYRAMID_1:
self.currentActor_ = PyramidOne.Pyramid(self._world)
elif index == Renderer.ActorType.PYRAMID_2:
self.currentActor_ = PyramidTwo.Pyramid(self._world)
elif index == Renderer.ActorType.SPHERE_ICOS:
self.currentActor_ = SphereIcos(self._world,
radius=1.0,
innerLevel=2,
outerLevel=2,
transform=xform,
mode=GL.GL_PATCHES)
elif index == Renderer.ActorType.SPHERE_POLAR:
self.currentActor_ = SpherePolar(self._world,
1.0,
40,
40,
transform=xform)
self._world.addActor(self.currentActor_)
class Renderer(QOpenGLWidget):
## initialization
def __init__(self, parent=None, **kwargs):
"""Initialize OpenGL version profile."""
super(Renderer, self).__init__(parent)
self._parent = parent
self._transforming = False
self._prevPoint = QPointF(0.0, 0.0)
self.axis_selected = False
## deal with options
self._lighting = kwargs.get("lighting", True)
self._antialiasing = kwargs.get("antialiasing", False)
self._statistics = kwargs.get("statistics", True)
## define home orientation
self._home_rotation = QQuaternion.fromAxisAndAngle(
QVector3D(1.0, 0.0, 0.0), 25.0) * QQuaternion.fromAxisAndAngle(
QVector3D(0.0, 1.0, 0.0), -50.0)
## define scene trackball
self._trackball = Trackball(velocity=0.05,
axis=QVector3D(0.0, 1.0, 0.0),
mode=Trackball.TrackballMode.Planar,
rotation=self._home_rotation,
paused=True)
## create main scene
self._world = World(self, home_position=QVector3D(0, 0, 3.5))
## do not animate
self._animating = True
## not yet initialized
self._initialized = False
self.setAutoFillBackground(False)
self.currentActor_ = None
self._shift_isPressed = False
def shiftPressed(self):
self._shift_isPressed = True
def shiftReleased(self):
self._shift_isPressed = False
def printOpenGLInformation(self, format, verbosity=0):
print("\n*** OpenGL context information ***")
print("Vendor: {}".format(
GL.glGetString(GL.GL_VENDOR).decode('UTF-8')))
print("Renderer: {}".format(
GL.glGetString(GL.GL_RENDERER).decode('UTF-8')))
print("OpenGL version: {}".format(
GL.glGetString(GL.GL_VERSION).decode('UTF-8')))
print("Shader version: {}".format(
GL.glGetString(GL.GL_SHADING_LANGUAGE_VERSION).decode('UTF-8')))
print("Maximum samples: {}".format(GL.glGetInteger(GL.GL_MAX_SAMPLES)))
print("\n*** QSurfaceFormat from context ***")
print("Depth buffer size: {}".format(format.depthBufferSize()))
print("Stencil buffer size: {}".format(format.stencilBufferSize()))
print("Samples: {}".format(format.samples()))
print("Red buffer size: {}".format(format.redBufferSize()))
print("Green buffer size: {}".format(format.greenBufferSize()))
print("Blue buffer size: {}".format(format.blueBufferSize()))
print("Alpha buffer size: {}".format(format.alphaBufferSize()))
#print("\nAvailable extensions:")
#for k in range(0, GL.glGetIntegerv(GL.GL_NUM_EXTENSIONS)-1):
# print("{},".format(GL.glGetStringi(GL.GL_EXTENSIONS, k).decode('UTF-8')))
#print("{}".format(GL.glGetStringi(GL.GL_EXTENSIONS, k+1).decode('UTF-8')))
def initializeGL(self):
"""Apply OpenGL version profile and initialize OpenGL functions."""
if not self._initialized:
self.printOpenGLInformation(self.context().format())
## create gnomon
self._gnomon = Gnomon(self)
## update cameras
self._world.camera.setRotation(
self._trackball.rotation().inverted())
self._gnomon.camera.setRotation(
self._trackball.rotation().inverted())
GL.glEnable(GL.GL_DEPTH_TEST)
GL.glEnable(GL.GL_DEPTH_CLAMP)
#GL.glEnable(GL.GL_CULL_FACE)
GL.glEnable(GL.GL_MULTISAMPLE)
GL.glEnable(GL.GL_FRAMEBUFFER_SRGB)
## attempt at line antialising
if self._antialiasing:
GL.glEnable(GL.GL_POLYGON_SMOOTH)
GL.glEnable(GL.GL_BLEND)
GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA)
GL.glHint(GL.GL_LINE_SMOOTH_HINT, GL.GL_NICEST)
GL.glHint(GL.GL_POLYGON_SMOOTH_HINT, GL.GL_NICEST)
GL.glPointSize(5)
GL.glLineWidth(1)
## clear color
GL.glClearColor(0.75, 0.76, 0.76, 0.0)
## initialize scene
self._world.initialize()
## initialize gnomon
self._gnomon.initialize()
## timer for immediate update
self._timer = QTimer(self)
self._timer.setTimerType(Qt.PreciseTimer)
self._timer.timeout.connect(self.updateScene)
self._timer.start()
## timer for measuring elapsed time
self._elapsed_timer = QElapsedTimer()
self._elapsed_timer.restart()
self._frameElapsed = 0
self._gpuElapsed = 0
xform1 = QMatrix4x4()
aux = Obj_Polyhedron(self._world, "1", transform=xform1)
self._world.addActor(aux)
self._initialized = True
else:
## initialize scene
self._world.initialize()
## initialize gnomon
self._gnomon.initialize()
## initialize OpenGL timer
self._query = GL.glGenQueries(1)
def clear(self):
"""Clear scene"""
self._world.clear()
self.update()
def renderTimeEstimates(self):
return [self._frameElapsed, self._gpuElapsed]
def selectActor(self, actor):
self.RemoveLines()
self.currentActor_ = actor
self._world.selectActor(actor)
@property
def lighting(self):
return self._lighting
def setDrawStyle(self, style):
self._draw_style = style
def activeSceneCamera(self):
"""Returns main scene camera"""
return self._world.camera
def setAnimating(self, value):
"""Sets continuous update"""
self._animating = value
def isAnimating(self):
"""Returns whether continous update is active"""
return self._animating
def updateScene(self):
"""Schedule an update to the scene"""
if self.isAnimating():
self.update()
def renderScene(self):
"""Draw main scene"""
## set scene rotation
self._world.camera.setRotation(self._trackball.rotation().inverted())
self._gnomon.camera.setRotation(self._trackball.rotation().inverted())
self._world.render()
## render gnomon
self._gnomon.render()
def paintGL(self):
"""Draw scene"""
## record render time statistics
if self._statistics:
## begin GPU time query
GL.glBeginQuery(GL.GL_TIME_ELAPSED, self._query)
## render scene
self.renderScene()
## finish GPU time query
GL.glEndQuery(GL.GL_TIME_ELAPSED)
## record render time statistics, need to stall the CPU a bit
ready = False
while not ready:
ready = GL.glGetQueryObjectiv(self._query,
GL.GL_QUERY_RESULT_AVAILABLE)
self._gpuElapsed = GL.glGetQueryObjectuiv(
self._query, GL.GL_QUERY_RESULT) / 1000000.0
## delete query object
#GL.glDeleteQueries( self._query )
else:
## render scene
self.renderScene()
self._frameElapsed = self._elapsed_timer.restart()
def resizeGL(self, width, height):
""" Called by the Qt libraries whenever the window is resized"""
self._world.camera.setAspectRatio(
width / float(height if height > 0.0 else 1.0))
def pan(self, point, state='start'):
"""Move camera according to mouse move"""
if state == 'start':
self._lastPanningPos = point
elif state == 'move':
delta = QLineF(self._lastPanningPos, point)
self._lastPanningPos = point
direction = QVector3D(-delta.dx(), -delta.dy(), 0.0).normalized()
newpos = self._world.camera.position + delta.length(
) * 2.0 * direction
self._world.camera.setPosition(newpos)
def mouseMoveEvent(self, event):
"""Called by the Qt libraries whenever the window receives a mouse move/drag event."""
super(Renderer, self).mouseMoveEvent(event)
if event.isAccepted():
return
if event.buttons() & Qt.LeftButton:
self._trackball.move(self._pixelPosToViewPos(event.localPos()),
QQuaternion())
event.accept()
if not self.isAnimating():
self.update()
elif event.buttons() & Qt.RightButton:
self.pan(self._pixelPosToViewPos(event.localPos()), state='move')
self.update()
def wheelEvent(self, event):
"""Process mouse wheel movements"""
super(Renderer, self).wheelEvent(event)
self.zoom(-event.angleDelta().y() / 950.0)
event.accept()
## scene is dirty, please update
self.update()
def zoom(self, diffvalue):
"""Zooms in/out the active camera"""
multiplicator = math.exp(diffvalue)
## get a hold of the current active camera
camera = self._world.camera
if camera.lens == Camera.Lens.Orthographic:
# Since there's no perspective, "zooming" in the original sense
# of the word won't have any visible effect. So we just increase
# or decrease the field-of-view values of the camera instead, to
# "shrink" the projection size of the model / scene.
camera.scaleHeight(multiplicator)
else:
old_focal_dist = camera.focalDistance
new_focal_dist = old_focal_dist * multiplicator
direction = camera.orientation * QVector3D(0.0, 0.0, -1.0)
newpos = camera.position + (new_focal_dist -
old_focal_dist) * -direction
camera.setPosition(newpos)
camera.setFocalDistance(new_focal_dist)
def viewFront(self):
"""Make camera face the front side of the scene"""
self._trackball.reset(QQuaternion())
self.update()
def viewBack(self):
"""Make camera face the back side of the scene"""
self._trackball.reset(
QQuaternion.fromAxisAndAngle(QVector3D(0.0, 1.0, 0.0), 180.0))
self.update()
def viewLeft(self):
"""Make camera face the left side of the scene"""
self._trackball.reset(
QQuaternion.fromAxisAndAngle(QVector3D(0.0, 1.0, 0.0), -90.0))
self.update()
def viewRight(self):
"""Make camera face the right side of the scene"""
self._trackball.reset(
QQuaternion.fromAxisAndAngle(QVector3D(0.0, 1.0, 0.0), 90.0))
self.update()
def viewTop(self):
"""Make camera face the top side of the scene"""
self._trackball.reset(
QQuaternion.fromAxisAndAngle(QVector3D(1.0, 0.0, 0.0), 90.0))
self.update()
def viewBottom(self):
"""Make camera face the bottom side of the scene"""
self._trackball.reset(
QQuaternion.fromAxisAndAngle(QVector3D(1.0, 0.0, 0.0), -90.0))
self.update()
def createGridLines(self):
"""Set gridlines"""
self.makeCurrent()
self._world.createGridLines()
self.doneCurrent()
def cameraLensChanged(self, lens):
"""Switch world's. camera lens"""
self._world.setCameraLens(lens)
self._gnomon.setCameraLens(lens)
self.update()
def storeCamera(self):
"""Store world's camera parameters"""
self._world.storeCamera()
def recallCamera(self):
"""Recall camera parameters"""
self._world.recallCamera()
self._trackball.reset(self._world.camera.rotation.inverted())
self.update()
def resetCamera(self):
"""Reset world's camera parameters"""
self._world.resetCamera()
self._trackball.reset(self._home_rotation)
self.update()
def drawStyleChanged(self, index):
self._world.setDrawStyle(Scene.DrawStyle.Styles[index])
self.update()
def setActors(self, objects):
self._objs = objects
def lightingChanged(self, state):
self._world.setLighting(state)
self.update()
def shadingChanged(self, index):
self._world.setShading(Scene.Shading.Types[index])
self.update()
def headLightChanged(self, state):
self._world.light.setHeadLight(state)
self.update()
def directionalLightChanged(self, state):
self._world.light.setDirectional(state)
self.update()
def enableProfiling(self, enable):
self._statistics = enable
def enableAnimation(self, enable):
self.setAnimating(enable)
if not enable:
self._trackball.stop()
def _pixelPosToViewPos(self, point):
return QPointF(2.0 * float(point.x()) / self.width() - 1.0,
1.0 - 2.0 * float(point.y()) / self.height())
def changeActor(self, index):
if (index == 0): return
if (index > len(self._objs)):
print("!!!!! Fora da Lista !!!!!!")
return
self.makeCurrent()
xform1 = QMatrix4x4()
aux = Obj_Polyhedron(self._world,
self._objs[index - 1],
transform=xform1)
self._world.addActor(aux)
def delActor(self):
self.RemoveLines()
self._world.removeActor(self.currentActor_)
def generateScalingLines(self):
self.makeCurrent()
self.RemoveLines()
cur = self.currentActor_
if (type(cur) is not Obj_Polyhedron): pass
cur._state = 1
sc = cur._scale
asc = sc * 2.5 # axis scale
dist = 5.0 * asc * 3
# x cube
matrix = QMatrix4x4()
matrix.rotate(-90.0, QVector3D(0.0, 0.0, 1.0))
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist / 2.0, 0.0)
xl = Cube(self._world,
name="sxc",
material=Material(diffuse=QVector3D(1.0, 0.0, 0.0),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
# y cube
matrix = QMatrix4x4()
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist / 2.0, 0.0)
yl = Cube(self._world,
name="syc",
material=Material(diffuse=QVector3D(0.0, 1.0, 0.0),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
# z cube
matrix = QMatrix4x4()
matrix.rotate(90.0, QVector3D(1.0, 0.0, 0.0))
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist / 2.0, 0.0)
zl = Cube(self._world,
name="szc",
material=Material(diffuse=QVector3D(0.0, 0.47, 0.78),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
# x cylinder
matrix = QMatrix4x4()
matrix.rotate(-90.0, QVector3D(0.0, 0.0, 1.0))
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist / 4.0, 0.0)
xlc = Cylinder(self._world,
name="txc",
height=dist / 2.0,
radius=sc,
resolution=12,
material=Material(diffuse=QVector3D(1.0, 0.0, 0.0),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
# y cylinder
matrix = QMatrix4x4()
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist / 4.0, 0.0)
ylc = Cylinder(self._world,
name="tyc",
height=dist / 2.0,
radius=sc,
resolution=12,
material=Material(diffuse=QVector3D(0.0, 1.0, 0.0),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
# z cylinder
matrix = QMatrix4x4()
matrix.rotate(90.0, QVector3D(1.0, 0.0, 0.0))
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist / 4.0, 0.0)
zlc = Cylinder(self._world,
name="tzc",
height=dist / 2.0,
radius=sc,
resolution=12,
material=Material(diffuse=QVector3D(0.0, 0.47, 0.78),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
newlines = [xl, yl, zl, xlc, ylc, zlc]
self.currentActor_._lines = newlines
for l in newlines:
self._world.addActor(l)
def generateRotatingLines(self):
pass
def generateTranslatingLines(self):
self.makeCurrent()
self.RemoveLines()
cur = self.currentActor_
if (type(cur) is not Obj_Polyhedron): pass
sc = cur._scale
cur._state = 3
asc = sc * 2.5 # axis scale
dist = 5.0 * asc * 3
## x axis cone
matrix = QMatrix4x4()
matrix.rotate(-90.0, QVector3D(0.0, 0.0, 1.0))
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist, 0.0)
xl = Cone(self._world,
name="tx",
resolution=12,
material=Material(diffuse=QVector3D(1.0, 0.0, 0.0),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
## y axis cone
matrix = QMatrix4x4()
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist, 0.0) ##6.0
yl = Cone(self._world,
name="ty",
resolution=12,
material=Material(diffuse=QVector3D(0.0, 1.0, 0.0),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
## z axis cone
matrix = QMatrix4x4()
matrix.rotate(90.0, QVector3D(1.0, 0.0, 0.0))
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist, 0.0)
zl = Cone(self._world,
name="tz",
resolution=12,
material=Material(diffuse=QVector3D(0.0, 0.47, 0.78),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
# x cylinder
matrix = QMatrix4x4()
matrix.rotate(-90.0, QVector3D(0.0, 0.0, 1.0))
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist / 2.0, 0.0)
xlc = Cylinder(self._world,
name="txc",
height=dist,
radius=sc,
resolution=12,
material=Material(diffuse=QVector3D(1.0, 0.0, 0.0),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
# y cylinder
matrix = QMatrix4x4()
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist / 2.0, 0.0)
ylc = Cylinder(self._world,
name="tyc",
height=dist,
radius=sc,
resolution=12,
material=Material(diffuse=QVector3D(0.0, 1.0, 0.0),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
# z cylinder
matrix = QMatrix4x4()
matrix.rotate(90.0, QVector3D(1.0, 0.0, 0.0))
matrix.scale(asc, asc, asc)
matrix.translate(0.0, dist / 2.0, 0.0)
zlc = Cylinder(self._world,
name="tzc",
height=dist,
radius=sc,
resolution=12,
material=Material(diffuse=QVector3D(0.0, 0.47, 0.78),
specular=QVector3D(0.5, 0.5, 0.5),
shininess=76.8),
transform=matrix)
newlines = [xl, yl, zl, xlc, ylc, zlc]
self.currentActor_._lines = newlines
for l in newlines:
self._world.addActor(l)
def selectX(self):
self.axis_selected = True
self.currentActor_._axis = 1
self.currentActor_._lines[0].setHighlighted(True)
self.currentActor_._lines[1].setHighlighted(False)
self.currentActor_._lines[2].setHighlighted(False)
def selectY(self):
self.axis_selected = True
self.currentActor_._axis = 2
self.currentActor_._lines[0].setHighlighted(False)
self.currentActor_._lines[1].setHighlighted(True)
self.currentActor_._lines[2].setHighlighted(False)
def selectZ(self):
self.axis_selected = True
self.currentActor_._axis = 3
self.currentActor_._lines[0].setHighlighted(False)
self.currentActor_._lines[1].setHighlighted(False)
self.currentActor_._lines[2].setHighlighted(True)
def IsAxisSelected(self):
return self.axis_selected
def RemoveLines(self):
self.axis_selected = False
self._transforming = False
if (type(self.currentActor_) is not Obj_Polyhedron): return
old = self.currentActor_._lines
if (old != None):
for l in old:
self._world.removeActor(l)
self.currentActor_._lines = None
def TransformActor(self, amt):
if (self.currentActor_._state == 1):
self.scale(amt)
elif (self.currentActor_._state == 2):
pass
elif (self.currentActor_._state == 3):
self.translate(amt)
def scale(self, amt):
if (amt < 0):
amt = -1 / amt
cur = self.currentActor_
initialPos = cur.position()
cur.translate(-initialPos)
cur.scale(amt)
cur.translate(initialPos)
def translate(self, amt):
cur = self.currentActor_
if (cur._axis == 1):
cur.translate(QVector3D(amt, 0.0, 0.0))
elif (cur._axis == 2):
cur.translate(QVector3D(0.0, amt, 0.0))
elif (cur._axis == 3):
cur.translate(QVector3D(0.0, 0.0, amt))
def startTransforming(self, point):
if (self._transforming): return
self._transforming = True
self._prevPoint = point
def finishTransforming(self, point):
moved = self._prevPoint - point
norm = math.sqrt(moved.x()**2 + moved.y()**2)
self._transforming = False
norm *= 3.0
if (self._prevPoint.x() > point.x()):
norm = -norm
self.TransformActor(norm)
def mouseReleaseEvent(self, event):
""" Called by the Qt libraries whenever the window receives a mouse release."""
super(Renderer, self).mouseReleaseEvent(event)
print("yup, here")
if event.isAccepted():
return
if (event.button() == Qt.LeftButton):
event.accept()
print("mouse left released")
point = self._pixelPosToViewPos(event.localPos())
if (self.IsAxisSelected()):
self.finishTransforming(point)
else:
self._trackball.release(point, QQuaternion())
if not self.isAnimating():
self._trackball.stop()
self.update()