Minimal Surface Example

The example shows the minimal code to create a surface.

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main.py

# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from __future__ import annotations

import sys

from PySide6.QtCore import QSize
from PySide6.QtGui import QVector3D
from PySide6.QtGraphs import (QSurfaceDataItem, QSurface3DSeries)
from PySide6.QtGraphsWidgets import (Q3DSurfaceWidgetItem)
from PySide6.QtQuickWidgets import QQuickWidget
from PySide6.QtWidgets import QApplication


DESCRIPTION = """Minimal Qt Graphs Surface Example

Use the mouse wheel to zoom. Rotate using the right mouse button.
"""


if __name__ == '__main__':
    app = QApplication(sys.argv)

    print(DESCRIPTION)

    window = QQuickWidget()
    surface = Q3DSurfaceWidgetItem()
    surface.setWidget(window)
    axis = surface.axisX()
    axis.setTitle("X")
    axis.setTitleVisible(True)
    axis = surface.axisY()
    axis.setTitle("Y")
    axis.setTitleVisible(True)
    axis = surface.axisZ()
    axis.setTitle("Z")
    axis.setTitleVisible(True)

    data = []
    data_row1 = [QSurfaceDataItem(QVector3D(0, 0.1, 0.5)),
                 QSurfaceDataItem(QVector3D(1, 0.5, 0.5))]
    data.append(data_row1)
    data_row2 = [QSurfaceDataItem(QVector3D(0, 1.8, 1)),
                 QSurfaceDataItem(QVector3D(1, 1.2, 1))]
    data.append(data_row2)

    series = QSurface3DSeries()
    series.dataProxy().resetArray(data)
    surface.addSeries(series)

    available_height = app.primaryScreen().availableGeometry().height()
    width = available_height * 4 / 5
    window.resize(QSize(width, width))
    window.show()

    exit_code = app.exec()
    surface = None
    del window
    sys.exit(exit_code)