Add WavefrontMesh

Add a mesh type for use with ShaderEffect which loads the geometry from
an .obj file.

Change-Id: I53c9149fc56cdab4a36fccc087abf54a6b50f42f
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

1 files changed, 100 insertions, 0 deletions

diff --git a/src/imports/wavefrontmesh/qwavefrontmesh.h b/src/imports/wavefrontmesh/qwavefrontmesh.h
new file mode 100644
index 0000000000..a13dc780fa
--- /dev/null
+++ b/src/imports/wavefrontmesh/qwavefrontmesh.h
@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWAVEFRONTMESH_H
+#define QWAVEFRONTMESH_H
+
+#include <QtQuick/private/qquickshadereffectmesh_p.h>
+
+#include <QtCore/qurl.h>
+#include <QtGui/qvector3d.h>
+
+QT_BEGIN_NAMESPACE
+
+class QWavefrontMeshPrivate;
+class QWavefrontMesh : public QQuickShaderEffectMesh
+{
+    Q_OBJECT
+    Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
+    Q_PROPERTY(Error lastError READ lastError NOTIFY lastErrorChanged)
+    Q_PROPERTY(QVector3D projectionPlaneV READ projectionPlaneV WRITE setProjectionPlaneV NOTIFY projectionPlaneVChanged)
+    Q_PROPERTY(QVector3D projectionPlaneW READ projectionPlaneW WRITE setProjectionPlaneW NOTIFY projectionPlaneWChanged)
+public:
+    enum Error {
+        NoError,
+        InvalidSourceError,
+        UnsupportedFaceShapeError,
+        UnsupportedIndexSizeError,
+        FileNotFoundError,
+        NoAttributesError,
+        MissingPositionAttributeError,
+        MissingTextureCoordinateAttributeError,
+        MissingPositionAndTextureCoordinateAttributesError,
+        TooManyAttributesError,
+        InvalidPlaneDefinitionError
+    };
+    Q_ENUMS(Error)
+
+    QWavefrontMesh(QObject *parent = nullptr);
+    ~QWavefrontMesh() override;
+
+    QUrl source() const;
+    void setSource(const QUrl &url);
+
+    Error lastError() const;
+    void setLastError(Error lastError);
+
+    bool validateAttributes(const QVector<QByteArray> &attributes, int *posIndex) override;
+    QSGGeometry *updateGeometry(QSGGeometry *geometry, int attrCount, int posIndex,
+                                const QRectF &srcRect, const QRectF &rect) override;
+    QString log() const override;
+
+    QVector3D projectionPlaneV() const;
+    void setProjectionPlaneV(const QVector3D &projectionPlaneV);
+
+    QVector3D projectionPlaneW() const;
+    void setProjectionPlaneW(const QVector3D &projectionPlaneW);
+
+Q_SIGNALS:
+    void sourceChanged();
+    void lastErrorChanged();
+    void projectionPlaneVChanged();
+    void projectionPlaneWChanged();
+
+protected Q_SLOTS:
+    void readData();
+
+private:
+    Q_DISABLE_COPY(QWavefrontMesh)
+    Q_DECLARE_PRIVATE(QWavefrontMesh)
+};
+
+QT_END_NAMESPACE
+
+#endif // QWAVEFRONTGEOMETRYMODEL_H