invt = 1 - t
pos = invt * invt * invt * self._p1 \
+ 3 * invt * invt * t * self._p2 \
+ 3 * invt * t * t * self._p3 \
+ t * t * t * self._p4
vertices[i].set(pos.x() * w, pos.y() * h)
self._root_node.markDirty(QSGNode.DirtyGeometry)
return self._root_node
if __name__ == '__main__':
import sys
app = QGuiApplication(sys.argv)
qmlRegisterType(BezierCurve, "CustomGeometry", 1, 0, "BezierCurve")
view = QQuickView()
format = view.format()
format.setSamples(16)
view.setFormat(format)
view.setSource(QUrl('qrc:///scenegraph/customgeometry/main.qml'))
view.show()
sys.exit(app.exec_())
invt = 1 - t
pos = invt * invt * invt * self._p1 \
+ 3 * invt * invt * t * self._p2 \
+ 3 * invt * t * t * self._p3 \
+ t * t * t * self._p4
vertices[i].set(pos.x() * w, pos.y() * h)
self._root_node.markDirty(QSGNode.DirtyGeometry)
return self._root_node
if __name__ == '__main__':
import sys
app = QGuiApplication(sys.argv)
qmlRegisterType(BezierCurve, "CustomGeometry", 1, 0, "BezierCurve")
view = QQuickView()
format = view.format()
format.setSamples(16)
view.setFormat(format)
view.setSource(QUrl('qrc:///scenegraph/customgeometry/main.qml'))
view.show()
sys.exit(app.exec_())
"GlFboViewportAdapter")
## USAGE EXAMPLE #######################################################################################################
if __name__ == "__main__":
import sys
from PyQt5.QtCore import QUrl
from PyQt5.QtGui import QGuiApplication, QSurfaceFormat
from PyQt5.QtQuick import QQuickView
from OpenGL.GL import *
# create an app, create a window with sample qml
app = QGuiApplication(sys.argv)
view = QQuickView(QUrl.fromLocalFile("qquickitem_glfbo_sample.qml"))
# specify OpenGL context version
oglFormat = view.format()
oglFormat.setProfile(QSurfaceFormat.CoreProfile)
oglFormat.setVersion(3, 3)
view.setFormat(oglFormat)
# define our viewport
class HelloGLWorld(GlFboViewportI):
def __init__(self):
self.frameCount = 0
def Cleanup(self):
pass
def Draw(self, fboName: int, viewSize: QPoint):
if self.frameCount % 100 > 50:
glClearBufferfv(GL_COLOR, 0, (1, .5, .5, 1))