# Copyright (C) 2013 Riverbank Computing Limited. # Copyright (C) 2022 The Qt Company Ltd. # SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause from __future__ import annotations """PySide6 port of the opengl/textures example from Qt v6.x showing the use of legacy OpenGL functions with QOpenGLVersionFunctionsFactory.""" import sys from PySide6.QtCore import QPoint, QSize, Qt, QTimer, Signal from PySide6.QtGui import QColor, QImage, QSurfaceFormat from PySide6.QtWidgets import QApplication, QGridLayout, QMessageBox, QWidget from PySide6.QtOpenGL import (QOpenGLTexture, QOpenGLVersionFunctionsFactory, QOpenGLVersionProfile) from PySide6.QtOpenGLWidgets import QOpenGLWidget try: from OpenGL import GL except ImportError: app = QApplication(sys.argv) messageBox = QMessageBox(QMessageBox.Critical, "OpenGL textures", "PyOpenGL must be installed to run this example.", QMessageBox.Close) messageBox.setDetailedText("Run:\npip install PyOpenGL PyOpenGL_accelerate") messageBox.exec() sys.exit(1) import textures_rc # noqa: F401 class GLWidget(QOpenGLWidget): sharedObject = 0 refCount = 0 coords = ( ((+1, -1, -1), (-1, -1, -1), (-1, +1, -1), (+1, +1, -1)), ((+1, +1, -1), (-1, +1, -1), (-1, +1, +1), (+1, +1, +1)), ((+1, -1, +1), (+1, -1, -1), (+1, +1, -1), (+1, +1, +1)), ((-1, -1, -1), (-1, -1, +1), (-1, +1, +1), (-1, +1, -1)), ((+1, -1, +1), (-1, -1, +1), (-1, -1, -1), (+1, -1, -1)), ((-1, -1, +1), (+1, -1, +1), (+1, +1, +1), (-1, +1, +1)) ) clicked = Signal() def __init__(self, parent): super().__init__(parent) self.clearColor = Qt.black self.xRot = 0 self.yRot = 0 self.zRot = 0 self.clearColor = QColor() self.lastPos = QPoint() self.funcs = None def freeGLResources(self): GLWidget.refCount -= 1 if GLWidget.refCount == 0: self.makeCurrent() self.funcs.glDeleteLists(self.__class__.sharedObject, 1) def minimumSizeHint(self): return QSize(50, 50) def sizeHint(self): return QSize(200, 200) def rotateBy(self, xAngle, yAngle, zAngle): self.xRot = (self.xRot + xAngle) % 5760 self.yRot = (self.yRot + yAngle) % 5760 self.zRot = (self.zRot + zAngle) % 5760 self.update() def setClearColor(self, color): self.clearColor = color self.update() def initializeGL(self): profile = QOpenGLVersionProfile() profile.setVersion(3, 2) profile.setProfile(QSurfaceFormat.CompatibilityProfile) self.funcs = QOpenGLVersionFunctionsFactory.get(profile) self.funcs.initializeOpenGLFunctions() if not GLWidget.sharedObject: self.textures = [] for i in range(6): image = QImage(f":/images/side{i + 1}.png") self.textures.append(QOpenGLTexture(image)) GLWidget.sharedObject = self.makeObject() GLWidget.refCount += 1 self.funcs.glEnable(GL.GL_DEPTH_TEST) self.funcs.glEnable(GL.GL_CULL_FACE) self.funcs.glEnable(GL.GL_TEXTURE_2D) def paintGL(self): self.funcs.glClearColor(self.clearColor.red(), self.clearColor.green(), self.clearColor.blue(), 1) self.funcs.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT) self.funcs.glLoadIdentity() self.funcs.glTranslated(0.0, 0.0, -10.0) self.funcs.glRotated(self.xRot / 16.0, 1.0, 0.0, 0.0) self.funcs.glRotated(self.yRot / 16.0, 0.0, 1.0, 0.0) self.funcs.glRotated(self.zRot / 16.0, 0.0, 0.0, 1.0) self.funcs.glCallList(GLWidget.sharedObject) def resizeGL(self, width, height): side = min(width, height) x = int((width - side) / 2) y = int((height - side) / 2) self.funcs.glViewport(x, y, side, side) self.funcs.glMatrixMode(GL.GL_PROJECTION) self.funcs.glLoadIdentity() self.funcs.glOrtho(-0.5, +0.5, +0.5, -0.5, 4.0, 15.0) self.funcs.glMatrixMode(GL.GL_MODELVIEW) def mousePressEvent(self, event): self.lastPos = event.position().toPoint() def mouseMoveEvent(self, event): pos = event.position().toPoint() dx = pos.x() - self.lastPos.x() dy = pos.y() - self.lastPos.y() if event.buttons() & Qt.LeftButton: self.rotateBy(8 * dy, 8 * dx, 0) elif event.buttons() & Qt.RightButton: self.rotateBy(8 * dy, 0, 8 * dx) self.lastPos = pos def mouseReleaseEvent(self, event): self.clicked.emit() def makeObject(self): dlist = self.funcs.glGenLists(1) self.funcs.glNewList(dlist, GL.GL_COMPILE) for i in range(6): self.textures[i].bind() self.funcs.glBegin(GL.GL_QUADS) for j in range(4): tx = {False: 0, True: 1}[j == 0 or j == 3] ty = {False: 0, True: 1}[j == 0 or j == 1] self.funcs.glTexCoord2d(tx, ty) x = 0.2 * GLWidget.coords[i][j][0] y = 0.2 * GLWidget.coords[i][j][1] z = 0.2 * GLWidget.coords[i][j][2] self.funcs.glVertex3d(x, y, z) self.funcs.glEnd() self.funcs.glEndList() return dlist class Window(QWidget): NumRows = 2 NumColumns = 3 def __init__(self, parent=None): QWidget.__init__(self, parent) mainLayout = QGridLayout(self) self.glWidgets = [] for i in range(Window.NumRows): self.glWidgets.append([]) for j in range(Window.NumColumns): self.glWidgets[i].append(None) hue_div = (Window.NumRows * Window.NumColumns - 1) for i in range(Window.NumRows): for j in range(Window.NumColumns): clearColor = QColor() hue = ((i * Window.NumColumns) + j) * 255 / hue_div clearColor.setHsv(hue, 255, 63) glw = GLWidget(self) self.glWidgets[i][j] = glw glw.setClearColor(clearColor) glw.rotateBy(+42 * 16, +42 * 16, -21 * 16) mainLayout.addWidget(glw, i, j) glw.clicked.connect(self.setCurrentGlWidget) qApp.lastWindowClosed.connect(glw.freeGLResources) # noqa: F821 self.currentGlWidget = self.glWidgets[0][0] timer = QTimer(self) timer.timeout.connect(self.rotateOneStep) timer.start(20) self.setWindowTitle(self.tr("Textures")) def setCurrentGlWidget(self): self.currentGlWidget = self.sender() def rotateOneStep(self): if self.currentGlWidget: self.currentGlWidget.rotateBy(+2 * 16, +2 * 16, -1 * 16) if __name__ == "__main__": app = QApplication(sys.argv) window = Window() window.show() sys.exit(app.exec())