Limit volume to axis ranges

The volume object that would go partially outside axis ranges
is scale and repositioned so that it only renders the portion
that is inside the axis ranges.

Change-Id: I792494e437998ba6276f58fab645767276c1476d
Reviewed-by: Mika Salmela <mika.salmela@digia.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/datavisualization/utils/shaderhelper.cpp b/src/datavisualization/utils/shaderhelper.cpp
index 9d1ad0d9..b6dc1621 100644
--- a/src/datavisualization/utils/shaderhelper.cpp
+++ b/src/datavisualization/utils/shaderhelper.cpp
@@ -101,6 +101,8 @@ void ShaderHelper::initialize()
     m_sampleCountUniform = m_program->uniformLocation("sampleCount");
     m_alphaMultiplierUniform = m_program->uniformLocation("alphaMultiplier");
     m_preserveOpacityUniform = m_program->uniformLocation("preserveOpacity");
+    m_minBoundsUniform = m_program->uniformLocation("minBounds");
+    m_maxBoundsUniform = m_program->uniformLocation("maxBounds");
     m_initialized = true;
 }
 
@@ -324,6 +326,20 @@ GLuint ShaderHelper::preserveOpacity()
     return m_preserveOpacityUniform;
 }
 
+GLuint ShaderHelper::maxBounds()
+{
+    if (!m_initialized)
+        qFatal("Shader not initialized");
+    return m_maxBoundsUniform;
+}
+
+GLuint ShaderHelper::minBounds()
+{
+    if (!m_initialized)
+        qFatal("Shader not initialized");
+    return m_minBoundsUniform;
+}
+
 GLuint ShaderHelper::posAtt()
 {
     if (!m_initialized)