1 files changed, 91 insertions, 0 deletions
diff --git a/examples/qt3d/tessellation-modes/tessellatedquadmesh.cpp b/examples/qt3d/tessellation-modes/tessellatedquadmesh.cpp
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+++ b/examples/qt3d/tessellation-modes/tessellatedquadmesh.cpp
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "tessellatedquadmesh.h"
+
+#include <Qt3DRenderer/qattribute.h>
+#include <Qt3DRenderer/qbuffer.h>
+#include <Qt3DRenderer/qmeshdata.h>
+
+TessellatedQuadMesh::TessellatedQuadMesh(Qt3D::QNode *parent)
+    : Qt3D::QAbstractMesh(parent)
+{
+}
+
+class TessellatedQuadMeshFunctor : public Qt3D::QAbstractMeshFunctor
+{
+public:
+    TessellatedQuadMeshFunctor() {}
+
+    Qt3D::QMeshDataPtr operator ()() Q_DECL_OVERRIDE
+    {
+        const float positionData[] = {
+            -0.8f, -0.8f, 0.0f,
+             0.8f, -0.8f, 0.0f,
+             0.8f,  0.8f, 0.0f,
+            -0.8f,  0.8f, 0.0f
+        };
+
+        const int nVerts = 4;
+        const int size = nVerts * 3 * sizeof(float);
+        QByteArray positionBytes;
+        positionBytes.resize(size);
+        memcpy(positionBytes.data(), positionData, size);
+
+        Qt3D::BufferPtr vertexBuffer(new Qt3D::Buffer(QOpenGLBuffer::VertexBuffer));
+        vertexBuffer->setUsage(QOpenGLBuffer::StaticDraw);
+        vertexBuffer->setData(positionBytes);
+
+        Qt3D::QMeshDataPtr mesh(new Qt3D::QMeshData(Qt3D::QMeshData::Patches));
+        mesh->addAttribute(Qt3D::QMeshData::defaultPositionAttributeName(),
+                           Qt3D::AttributePtr(new Qt3D::Attribute(vertexBuffer, GL_FLOAT_VEC3, nVerts)));
+        mesh->setVerticesPerPatch(4);
+        return mesh;
+    }
+
+    bool operator ==(const Qt3D::QAbstractMeshFunctor &other) const
+    {
+        const TessellatedQuadMeshFunctor *otherFunctor = dynamic_cast<const TessellatedQuadMeshFunctor *>(&other);
+        if (otherFunctor != Q_NULLPTR)
+            return true;
+        return false;
+    }
+};
+
+Qt3D::QAbstractMeshFunctorPtr TessellatedQuadMesh::meshFunctor() const
+{
+    return Qt3D::QAbstractMeshFunctorPtr(new TessellatedQuadMeshFunctor);
+}