[cig-commits] r11247 - cs/benchmark/cigma/trunk/scratch/cg/src

[luis at geodynamics.org]

Author: luis
Date: 2008-02-26 04:51:58 -0800 (Tue, 26 Feb 2008)
New Revision: 11247

Added:
   cs/benchmark/cigma/trunk/scratch/cg/src/RenderPoints.h
Log:
Added function for rendering points on a given vtkRenderer


Added: cs/benchmark/cigma/trunk/scratch/cg/src/RenderPoints.h
===================================================================
--- cs/benchmark/cigma/trunk/scratch/cg/src/RenderPoints.h	                        (rev 0)
+++ cs/benchmark/cigma/trunk/scratch/cg/src/RenderPoints.h	2008-02-26 12:51:58 UTC (rev 11247)
@@ -0,0 +1,79 @@
+#ifndef __RENDER_POINTS_H__
+#define __RENDER_POINTS_H__
+
+#include <ctime>
+#include <cmath>
+#include "vtkRenderer.h"
+#include "vtkRenderWindow.h"
+#include "vtkFloatArray.h"
+#include "vtkPoints.h"
+#include "vtkPolyVertex.h"
+#include "vtkUnstructuredGrid.h"
+#include "vtkOutlineFilter.h"
+#include "vtkDataSetMapper.h"
+#include "vtkPolyDataMapper.h"
+#include "vtkActor.h"
+#include "vtkProperty.h"
+
+using namespace std;
+
+void RenderPoints(vtkRenderer *ren)
+{
+    assert(ren != 0);
+
+    int i;
+    int N = 10 * 1000;
+    double pts[3];
+
+    vtkFloatArray *pcoords = vtkFloatArray::New();
+    pcoords->SetNumberOfComponents(3);
+    pcoords->SetNumberOfTuples(N);
+
+    srand(time(0));
+    for (i = 0; i < N; i++)
+    {
+        pts[0] = rand()/(1.0 + RAND_MAX);
+        pts[1] = rand()/(1.0 + RAND_MAX);
+        pts[2] = rand()/(1.0 + RAND_MAX);
+        pcoords->SetTuple(i, pts);
+    }
+
+    vtkPoints *points = vtkPoints::New();
+    points->SetData(pcoords);
+
+    vtkPolyVertex *polyvertex = vtkPolyVertex::New();
+    polyvertex->GetPointIds()->SetNumberOfIds(N);
+    for (i = 0; i < N; i++)
+    {
+        polyvertex->GetPointIds()->SetId(i,i);
+    }
+
+    vtkUnstructuredGrid *ugrid = vtkUnstructuredGrid::New();
+    ugrid->Allocate(1,1); // proper values for Allocate() method?
+    ugrid->InsertNextCell(polyvertex->GetCellType(), polyvertex->GetPointIds());
+    ugrid->SetPoints(points);
+
+    vtkDataSetMapper *mapper = vtkDataSetMapper::New();
+    mapper->ImmediateModeRenderingOn();
+    mapper->SetInput(ugrid);
+
+    vtkActor *actor = vtkActor::New();
+    actor->SetMapper(mapper);
+
+    vtkOutlineFilter *outlineData = vtkOutlineFilter::New();
+    outlineData->SetInput(ugrid);
+
+    vtkPolyDataMapper *outlineMapper = vtkPolyDataMapper::New();
+    outlineMapper->SetInputConnection(outlineData->GetOutputPort());
+
+    vtkActor *outlineActor = vtkActor::New();
+    outlineActor->SetMapper(outlineMapper);
+    outlineActor->GetProperty()->SetColor(1,1,1);
+
+    ren->AddActor(actor);
+    ren->AddActor(outlineActor);
+    ren->ResetCamera();
+    ren->GetRenderWindow()->Render();
+}
+
+#endif