2015-09-01 23:09:36 +00:00
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//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//
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// Copyright 2014 Sandia Corporation.
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#include <vtkm/worklet/IsosurfaceUniformGrid.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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#include <vtkm/cont/CellSetExplicit.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/testing/Testing.h>
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#if defined (__APPLE__)
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# include <GLUT/glut.h>
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#else
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# include <GL/glut.h>
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#endif
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#include "quaternion.h"
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#include <vector>
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typedef VTKM_DEFAULT_DEVICE_ADAPTER_TAG DeviceAdapter;
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2015-09-02 00:09:15 +00:00
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vtkm::Id3 dims(16,16,16);
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2015-09-01 23:09:36 +00:00
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vtkm::worklet::IsosurfaceFilterUniformGrid<vtkm::Float32, DeviceAdapter> *isosurfaceFilter;
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Float32,3> > verticesArray, normalsArray;
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vtkm::cont::ArrayHandle<vtkm::Float32> scalarsArray;
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Quaternion qrot;
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int lastx, lasty;
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int mouse_state = 1;
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namespace {
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class TangleField : public vtkm::worklet::WorkletMapField
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{
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public:
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typedef void ControlSignature(FieldIn<IdType> vertexId, FieldOut<Scalar> v);
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typedef void ExecutionSignature(_1, _2);
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typedef _1 InputDomain;
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const vtkm::Id xdim, ydim, zdim;
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const float xmin, ymin, zmin, xmax, ymax, zmax;
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const vtkm::Id cellsPerLayer;
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VTKM_CONT_EXPORT
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TangleField(const vtkm::Id3 dims, const float mins[3], const float maxs[3]) : xdim(dims[0]), ydim(dims[1]), zdim(dims[2]),
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xmin(mins[0]), ymin(mins[1]), zmin(mins[2]), xmax(maxs[0]), ymax(maxs[1]), zmax(maxs[2]), cellsPerLayer((xdim) * (ydim)) { };
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VTKM_EXEC_EXPORT
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void operator()(const vtkm::Id &vertexId, vtkm::Float32 &v) const
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{
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const vtkm::Id x = vertexId % (xdim);
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const vtkm::Id y = (vertexId / (xdim)) % (ydim);
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const vtkm::Id z = vertexId / cellsPerLayer;
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const float fx = static_cast<float>(x) / static_cast<float>(xdim-1);
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const float fy = static_cast<float>(y) / static_cast<float>(xdim-1);
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const float fz = static_cast<float>(z) / static_cast<float>(xdim-1);
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const vtkm::Float32 xx = 3.0f*(xmin+(xmax-xmin)*(fx));
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const vtkm::Float32 yy = 3.0f*(ymin+(ymax-ymin)*(fy));
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const vtkm::Float32 zz = 3.0f*(zmin+(zmax-zmin)*(fz));
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v = (xx*xx*xx*xx - 5.0f*xx*xx + yy*yy*yy*yy - 5.0f*yy*yy + zz*zz*zz*zz - 5.0f*zz*zz + 11.8f) * 0.2f + 0.5f;
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}
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};
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vtkm::cont::DataSet MakeIsosurfaceTestDataSet(vtkm::Id3 dims)
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{
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vtkm::cont::DataSet dataSet;
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const vtkm::Id3 vdims(dims[0] + 1, dims[1] + 1, dims[2] + 1);
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const vtkm::Id dim3 = dims[0]*dims[1]*dims[2];
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float mins[3] = {-1.0f, -1.0f, -1.0f};
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float maxs[3] = {1.0f, 1.0f, 1.0f};
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vtkm::cont::ArrayHandle<vtkm::Float32> fieldArray;
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vtkm::cont::ArrayHandleCounting<vtkm::Id> vertexCountImplicitArray(0, vdims[0]*vdims[1]*vdims[2]);
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vtkm::worklet::DispatcherMapField<TangleField> tangleFieldDispatcher(TangleField(vdims, mins, maxs));
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tangleFieldDispatcher.Invoke(vertexCountImplicitArray, fieldArray);
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vtkm::cont::ArrayHandleUniformPointCoordinates coordinates(vdims);
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dataSet.AddCoordinateSystem(
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vtkm::cont::CoordinateSystem("coordinates", 1, coordinates));
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dataSet.AddField(vtkm::cont::Field("nodevar", 1, vtkm::cont::Field::ASSOC_POINTS, fieldArray));
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std::vector<vtkm::Float32> cellvar( static_cast<std::size_t>(dim3) );
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for(std::size_t i=0; i < cellvar.size(); i++)
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{
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cellvar[i] = vtkm::Float32(i);
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}
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vtkm::cont::Field cellField("cellvar", 1,
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vtkm::cont::Field::ASSOC_CELL_SET,
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"cells",
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cellvar);
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dataSet.AddField(cellField);
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static const vtkm::IdComponent ndim = 3;
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vtkm::cont::CellSetStructured<ndim> cellSet("cells");
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cellSet.SetPointDimensions(vdims);
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dataSet.AddCellSet(cellSet);
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return dataSet;
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}
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}
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void initializeGL()
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{
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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glEnable(GL_DEPTH_TEST);
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glShadeModel(GL_SMOOTH);
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float white[] = { 0.8, 0.8, 0.8, 1.0 };
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float black[] = { 0.0, 0.0, 0.0, 1.0 };
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float lightPos[] = { 10.0, 10.0, 10.5, 1.0 };
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glLightfv(GL_LIGHT0, GL_AMBIENT, white);
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glLightfv(GL_LIGHT0, GL_DIFFUSE, white);
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glLightfv(GL_LIGHT0, GL_SPECULAR, black);
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glLightfv(GL_LIGHT0, GL_POSITION, lightPos);
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glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, 1);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0);
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glEnable(GL_NORMALIZE);
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glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
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glEnable(GL_COLOR_MATERIAL);
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}
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void displayCall()
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{
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glEnable(GL_DEPTH_TEST);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective( 45.0f, 1.0f, 1.0f, 20.0f);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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2015-09-02 00:22:40 +00:00
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gluLookAt(0.0f, 0.0f, 3.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f);
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2015-09-01 23:09:36 +00:00
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glPushMatrix();
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float rotationMatrix[16];
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qrot.getRotMat(rotationMatrix);
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glMultMatrixf(rotationMatrix);
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2015-09-02 00:22:40 +00:00
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glTranslatef(-0.5f, -0.5f, -0.5f);
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2015-09-01 23:09:36 +00:00
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glColor3f(0.1f, 0.1f, 0.6f);
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glBegin(GL_TRIANGLES);
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for (unsigned int i=0; i<verticesArray.GetNumberOfValues(); i++)
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{
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vtkm::Vec<vtkm::Float32, 3> curNormal = normalsArray.GetPortalConstControl().Get(i);
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vtkm::Vec<vtkm::Float32, 3> curVertex = verticesArray.GetPortalConstControl().Get(i);
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glNormal3f(curNormal[0], curNormal[1], curNormal[2]);
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glVertex3f(curVertex[0], curVertex[1], curVertex[2]);
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}
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glEnd();
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glPopMatrix();
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glutSwapBuffers();
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}
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void mouseMove(int x, int y)
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{
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int dx = x - lastx;
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int dy = y - lasty;
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if (mouse_state == 0)
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{
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Quaternion newRotX;
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newRotX.setEulerAngles(-0.2*dx*M_PI/180.0, 0.0, 0.0);
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qrot.mul(newRotX);
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Quaternion newRotY;
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newRotY.setEulerAngles(0.0, 0.0, -0.2*dy*M_PI/180.0);
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qrot.mul(newRotY);
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}
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lastx = x;
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lasty = y;
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glutPostRedisplay();
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}
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void mouseCall(int button, int state, int x, int y)
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{
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if (button == 0) mouse_state = state;
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if ((button == 0) && (state == 0)) { lastx = x; lasty = y; }
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}
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int main(int argc, char* argv[])
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{
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std::cout << "IsosurfaceUniformGrid Example" << std::endl;
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vtkm::cont::DataSet dataSet = MakeIsosurfaceTestDataSet(dims);
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isosurfaceFilter = new vtkm::worklet::IsosurfaceFilterUniformGrid<vtkm::Float32, DeviceAdapter>(dims, dataSet);
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isosurfaceFilter->Run(0.5,
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dataSet.GetField("nodevar").GetData(),
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verticesArray,
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normalsArray,
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scalarsArray);
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std::cout << verticesArray.GetNumberOfValues() << std::endl;
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lastx = lasty = 0;
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glutInit(&argc, argv);
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glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
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glutInitWindowSize(1000, 1000);
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glutCreateWindow("VTK-m Isosurface");
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initializeGL();
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glutDisplayFunc(displayCall);
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glutMotionFunc(mouseMove);
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glutMouseFunc(mouseCall);
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glutMainLoop();
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return 0;
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}
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