Implement volume rendering support

New subclass of QCustom3DItem, QCustom3DVolume is provided.
The documentation for the example will be done in a separate commit.

Change-Id: Idb3fdb0654c6bec7606ca012b75852a5a8412397
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

1 files changed, 24 insertions, 1 deletions

diff --git a/src/datavisualization/data/customrenderitem.cpp b/src/datavisualization/data/customrenderitem.cpp
index a1c70057..b96a4957 100644
--- a/src/datavisualization/data/customrenderitem.cpp
+++ b/src/datavisualization/data/customrenderitem.cpp
@@ -23,9 +23,20 @@ QT_BEGIN_NAMESPACE_DATAVISUALIZATION
 CustomRenderItem::CustomRenderItem()
     : AbstractRenderItem(),
       m_texture(0),
+      m_absolute(false),
       m_object(0),
+      m_needBlend(true),
       m_visible(true),
-      m_renderer(0)
+      m_valid(true),
+      m_index(0),
+      m_shadowCasting(false),
+      m_isFacingCamera(false),
+      m_item(0),
+      m_renderer(0),
+      m_textureWidth(0),
+      m_textureHeight(0),
+      m_textureDepth(0),
+      m_isVolume(false)
 {
 }
 
@@ -39,4 +50,16 @@ void CustomRenderItem::setMesh(const QString &meshFile)
     ObjectHelper::resetObjectHelper(m_renderer, m_object, meshFile);
 }
 
+void CustomRenderItem::setColorTable(const QVector<QRgb> &colors)
+{
+    m_colorTable.resize(colors.size());
+    for (int i = 0; i < m_colorTable.size(); i++) {
+        const QRgb &rgb = colors.at(i);
+        m_colorTable[i] = QVector4D(float(qRed(rgb)) / 255.0f,
+                                    float(qGreen(rgb)) / 255.0f,
+                                    float(qBlue(rgb)) / 255.0f,
+                                    float(qAlpha(rgb)) / 255.0f);
+    }
+}
+
 QT_END_NAMESPACE_DATAVISUALIZATION