diff options
Diffstat (limited to 'src/datavisualization/utils/scatterpointbufferhelper.cpp')
| -rw-r--r-- | src/datavisualization/utils/scatterpointbufferhelper.cpp | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/datavisualization/utils/scatterpointbufferhelper.cpp b/src/datavisualization/utils/scatterpointbufferhelper.cpp index b14d84ad..2ddee31c 100644 --- a/src/datavisualization/utils/scatterpointbufferhelper.cpp +++ b/src/datavisualization/utils/scatterpointbufferhelper.cpp @@ -17,6 +17,7 @@ ****************************************************************************/ #include "scatterpointbufferhelper_p.h" +#include <QtGui/QVector2D> QT_BEGIN_NAMESPACE_DATAVISUALIZATION @@ -86,9 +87,14 @@ void ScatterPointBufferHelper::load(ScatterSeriesRenderCache *cache) if (m_meshDataLoaded) { // Delete old data glDeleteBuffers(1, &m_pointbuffer); + glDeleteBuffers(1, &m_uvbuffer); m_bufferedPoints.clear(); } + QVector<QVector2D> buffered_uvs; + if (cache->colorStyle() == Q3DTheme::ColorStyleRangeGradient) + createRangeGradientUVs(cache, buffered_uvs); + bool itemsVisible = false; m_bufferedPoints.resize(renderArraySize); for (int i = 0; i < renderArraySize; i++) { @@ -110,10 +116,54 @@ void ScatterPointBufferHelper::load(ScatterSeriesRenderCache *cache) glBufferData(GL_ARRAY_BUFFER, m_bufferedPoints.size() * sizeof(QVector3D), &m_bufferedPoints.at(0), GL_DYNAMIC_DRAW); + + if (buffered_uvs.size()) { + glGenBuffers(1, &m_uvbuffer); + glBindBuffer(GL_ARRAY_BUFFER, m_uvbuffer); + glBufferData(GL_ARRAY_BUFFER, buffered_uvs.size() * sizeof(QVector2D), + &buffered_uvs.at(0), GL_STATIC_DRAW); + } + glBindBuffer(GL_ARRAY_BUFFER, 0); m_meshDataLoaded = true; } } +void ScatterPointBufferHelper::updateUVs(ScatterSeriesRenderCache *cache) +{ + QVector<QVector2D> buffered_uvs; + + createRangeGradientUVs(cache, buffered_uvs); + + if (buffered_uvs.size()) { + if (!m_uvbuffer) + glGenBuffers(1, &m_uvbuffer); + + glBindBuffer(GL_ARRAY_BUFFER, m_uvbuffer); + glBufferData(GL_ARRAY_BUFFER, buffered_uvs.size() * sizeof(QVector2D), + &buffered_uvs.at(0), GL_STATIC_DRAW); + + glBindBuffer(GL_ARRAY_BUFFER, 0); + } +} + +void ScatterPointBufferHelper::createRangeGradientUVs(ScatterSeriesRenderCache *cache, + QVector<QVector2D> &buffered_uvs) +{ + const ScatterRenderItemArray &renderArray = cache->renderArray(); + const uint renderArraySize = renderArray.size(); + buffered_uvs.resize(renderArraySize); + + QVector2D uv; + uv.setX(0.0f); + for (uint i = 0; i < renderArraySize; i++) { + const ScatterRenderItem &item = renderArray.at(i); + + float y = ((item.translation().y() + m_scaleY) * 0.5f) / m_scaleY; + uv.setY(y); + buffered_uvs[i] = uv; + } +} + QT_END_NAMESPACE_DATAVISUALIZATION |