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-rw-r--r--examples/widgets/graphicsview/boxes/roundedbox.cpp170
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diff --git a/examples/widgets/graphicsview/boxes/roundedbox.cpp b/examples/widgets/graphicsview/boxes/roundedbox.cpp
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--- a/examples/widgets/graphicsview/boxes/roundedbox.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the demonstration applications of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** 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.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in
-** the documentation and/or other materials provided with the
-** distribution.
-** * Neither the name of The Qt Company Ltd nor the names of its
-** contributors may be used to endorse or promote products derived
-** from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "roundedbox.h"
-
-//============================================================================//
-// P3T2N3Vertex //
-//============================================================================//
-
-VertexDescription P3T2N3Vertex::description[] = {
- {VertexDescription::Position, GL_FLOAT, SIZE_OF_MEMBER(P3T2N3Vertex, position) / sizeof(float), 0, 0},
- {VertexDescription::TexCoord, GL_FLOAT, SIZE_OF_MEMBER(P3T2N3Vertex, texCoord) / sizeof(float), sizeof(QVector3D), 0},
- {VertexDescription::Normal, GL_FLOAT, SIZE_OF_MEMBER(P3T2N3Vertex, normal) / sizeof(float), sizeof(QVector3D) + sizeof(QVector2D), 0},
-
- {VertexDescription::Null, 0, 0, 0, 0},
-};
-
-//============================================================================//
-// GLRoundedBox //
-//============================================================================//
-
-float lerp(float a, float b, float t)
-{
- return a * (1.0f - t) + b * t;
-}
-
-GLRoundedBox::GLRoundedBox(float r, float scale, int n)
- : GLTriangleMesh<P3T2N3Vertex, unsigned short>((n+2)*(n+3)*4, (n+1)*(n+1)*24+36+72*(n+1))
-{
- int vidx = 0, iidx = 0;
- int vertexCountPerCorner = (n + 2) * (n + 3) / 2;
-
- P3T2N3Vertex *vp = m_vb.lock();
- unsigned short *ip = m_ib.lock();
-
- if (!vp || !ip) {
- qWarning("GLRoundedBox::GLRoundedBox: Failed to lock vertex buffer and/or index buffer.");
- m_ib.unlock();
- m_vb.unlock();
- return;
- }
-
- for (int corner = 0; corner < 8; ++corner) {
- QVector3D centre(corner & 1 ? 1.0f : -1.0f,
- corner & 2 ? 1.0f : -1.0f,
- corner & 4 ? 1.0f : -1.0f);
- int winding = (corner & 1) ^ ((corner >> 1) & 1) ^ (corner >> 2);
- int offsX = ((corner ^ 1) - corner) * vertexCountPerCorner;
- int offsY = ((corner ^ 2) - corner) * vertexCountPerCorner;
- int offsZ = ((corner ^ 4) - corner) * vertexCountPerCorner;
-
- // Face polygons
- if (winding) {
- ip[iidx++] = vidx;
- ip[iidx++] = vidx + offsX;
- ip[iidx++] = vidx + offsY;
-
- ip[iidx++] = vidx + vertexCountPerCorner - n - 2;
- ip[iidx++] = vidx + vertexCountPerCorner - n - 2 + offsY;
- ip[iidx++] = vidx + vertexCountPerCorner - n - 2 + offsZ;
-
- ip[iidx++] = vidx + vertexCountPerCorner - 1;
- ip[iidx++] = vidx + vertexCountPerCorner - 1 + offsZ;
- ip[iidx++] = vidx + vertexCountPerCorner - 1 + offsX;
- }
-
- for (int i = 0; i < n + 2; ++i) {
-
- // Edge polygons
- if (winding && i < n + 1) {
- ip[iidx++] = vidx + i + 1;
- ip[iidx++] = vidx;
- ip[iidx++] = vidx + offsY + i + 1;
- ip[iidx++] = vidx + offsY;
- ip[iidx++] = vidx + offsY + i + 1;
- ip[iidx++] = vidx;
-
- ip[iidx++] = vidx + i;
- ip[iidx++] = vidx + 2 * i + 2;
- ip[iidx++] = vidx + i + offsX;
- ip[iidx++] = vidx + 2 * i + offsX + 2;
- ip[iidx++] = vidx + i + offsX;
- ip[iidx++] = vidx + 2 * i + 2;
-
- ip[iidx++] = (corner + 1) * vertexCountPerCorner - 1 - i;
- ip[iidx++] = (corner + 1) * vertexCountPerCorner - 2 - i;
- ip[iidx++] = (corner + 1) * vertexCountPerCorner - 1 - i + offsZ;
- ip[iidx++] = (corner + 1) * vertexCountPerCorner - 2 - i + offsZ;
- ip[iidx++] = (corner + 1) * vertexCountPerCorner - 1 - i + offsZ;
- ip[iidx++] = (corner + 1) * vertexCountPerCorner - 2 - i;
- }
-
- for (int j = 0; j <= i; ++j) {
- QVector3D normal = QVector3D(i - j, j, n + 1 - i).normalized();
- QVector3D offset(0.5f - r, 0.5f - r, 0.5f - r);
- QVector3D pos = centre * (offset + r * normal);
-
- vp[vidx].position = scale * pos;
- vp[vidx].normal = centre * normal;
- vp[vidx].texCoord = QVector2D(pos.x() + 0.5f, pos.y() + 0.5f);
-
- // Corner polygons
- if (i < n + 1) {
- ip[iidx++] = vidx;
- ip[iidx++] = vidx + i + 2 - winding;
- ip[iidx++] = vidx + i + 1 + winding;
- }
- if (i < n) {
- ip[iidx++] = vidx + i + 1 + winding;
- ip[iidx++] = vidx + i + 2 - winding;
- ip[iidx++] = vidx + 2 * i + 4;
- }
-
- ++vidx;
- }
- }
-
- }
-
- m_ib.unlock();
- m_vb.unlock();
-}
-
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