Changeset 3978 for trunk/packages

Timestamp:

Oct 2, 2013 1:13:38 AM (11 years ago)

Author:

ldelgass

Message:

Add option to scale opacity in VTK transfer function

Location:

trunk/packages/vizservers/vtkvis

Files:

• ColorMap.cpp (modified) (4 diffs)
• ColorMap.h (modified) (1 diff)

trunk/packages/vizservers/vtkvis/ColorMap.cpp

@@ -81 +81 @@
  */
 vtkSmartPointer<vtkPiecewiseFunction>
-ColorMap::getOpacityTransferFunction(double range[2])
+ColorMap::getOpacityTransferFunction(double range[2], double opacityScale)
 {
     vtkSmartPointer<vtkPiecewiseFunction> tf = vtkSmartPointer<vtkPiecewiseFunction>::New();
@@ -88 +88 @@
         _opacityTF->GetNodeValue(i, tmp);
         tmp[0] = range[0] + tmp[0] * (range[1] - range[0]);
+        tmp[1] *= opacityScale;
         tf->AddPoint(tmp[0], tmp[1], tmp[2], tmp[3]);
     }
@@ -106 +107 @@
 
 #ifdef DEBUG
-    TRACE("New control point: %g  = %g %g %g",
+    TRACE("New control point: %g = %g %g %g",
           cp.value, cp.color[0], cp.color[1], cp.color[2]);
 #endif
@@ -137 +138 @@
 
 #ifdef DEBUG
-    TRACE("New opacity control point: %g  = %g",
+    TRACE("New opacity control point: %g = %g",
           cp.value, cp.alpha);
 #endif

trunk/packages/vizservers/vtkvis/ColorMap.h

@@ -91 +91 @@
     vtkSmartPointer<vtkColorTransferFunction> getColorTransferFunction(double range[2]);
 
-    vtkSmartPointer<vtkPiecewiseFunction> getOpacityTransferFunction(double range[2]);
+    vtkSmartPointer<vtkPiecewiseFunction> getOpacityTransferFunction(double range[2], opacityScale = 1.0);
 
     void setNumberOfTableEntries(int numEntries);