mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
ed43dad6ca
Previously, DynamicArrayHandle and DynamicCellSet had slightly different interfaces to their CastTo feature. It was a bit confusing and not all that easy to use. This change simplifies and unifies them by making each class have a single CopyTo method that takes a reference to a cast object (an ArrayHandle or CellSet, respectively) and fills that object with the data contained if the cast is successfull. This interface gets around having to declare strange types. Each object also has a Cast method that has to have a template parameter specified and returns a reference of that type (if possible). In addition, the old behavior is preserved for DynamicArrayHandle (but not DynamicCellSet). To avoid confusion, the name of that cast method is CastToTypeStorage. However, the method was chaned to not take parameters to make it consistent with the other Cast method. Also, the IsType methods have been modified to reflect changes in cast/copy. IsType now no longer takes arguments. However, an alternate IsSameType does the same thing but does take an argument.
287 lines
9.1 KiB
C++
287 lines
9.1 KiB
C++
//============================================================================
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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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//We first check if VTKM_DEVICE_ADAPTER is defined, so that when TBB and CUDA
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//includes this file we use the device adapter that they have set.
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#ifndef VTKM_DEVICE_ADAPTER
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#define VTKM_DEVICE_ADAPTER VTKM_DEVICE_ADAPTER_SERIAL
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#endif
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#include <vtkm/worklet/MarchingCubes.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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#include <vtkm/Math.h>
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#include <vtkm/cont/ArrayHandleCounting.h>
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#include <vtkm/cont/CellSetExplicit.h>
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#include <vtkm/cont/DataSet.h>
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//Suppress warnings about glut being deprecated on OSX
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#if (defined(VTKM_GCC) || defined(VTKM_CLANG))
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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#endif
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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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vtkm::Id3 dims(16,16,16);
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vtkm::worklet::MarchingCubes<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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// Define the tangle field for the input data
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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 vtkm::FloatDefault 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 vtkm::FloatDefault mins[3], const vtkm::FloatDefault 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 vtkm::FloatDefault fx = static_cast<vtkm::FloatDefault>(x) / static_cast<vtkm::FloatDefault>(xdim-1);
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const vtkm::FloatDefault fy = static_cast<vtkm::FloatDefault>(y) / static_cast<vtkm::FloatDefault>(xdim-1);
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const vtkm::FloatDefault fz = static_cast<vtkm::FloatDefault>(z) / static_cast<vtkm::FloatDefault>(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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// Construct an input data set using the tangle field worklet
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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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vtkm::FloatDefault mins[3] = {-1.0f, -1.0f, -1.0f};
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vtkm::FloatDefault 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, 1, 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::Vec<vtkm::FloatDefault,3> origin(0.0f, 0.0f, 0.0f);
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vtkm::Vec<vtkm::FloatDefault,3> spacing(
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1.0f/static_cast<vtkm::FloatDefault>(dims[0]),
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1.0f/static_cast<vtkm::FloatDefault>(dims[2]),
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1.0f/static_cast<vtkm::FloatDefault>(dims[1]));
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vtkm::cont::ArrayHandleUniformPointCoordinates
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coordinates(vdims, origin, spacing);
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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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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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// Initialize the OpenGL state
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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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vtkm::Float32 white[] = { 0.8f, 0.8f, 0.8f, 1.0f };
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vtkm::Float32 black[] = { 0.0f, 0.0f, 0.0f, 1.0f };
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vtkm::Float32 lightPos[] = { 10.0f, 10.0f, 10.5f, 1.0f };
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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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// Render the output using simple OpenGL
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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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gluLookAt(0.0f, 0.0f, 3.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f);
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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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glTranslatef(-0.5f, -0.5f, -0.5f);
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glColor3f(0.1f, 0.1f, 0.6f);
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glBegin(GL_TRIANGLES);
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for (vtkm::IdComponent 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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// Allow rotations of the view
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void mouseMove(int x, int y)
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{
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vtkm::Float32 dx = static_cast<vtkm::Float32>(x - lastx);
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vtkm::Float32 dy = static_cast<vtkm::Float32>(y - lasty);
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if (mouse_state == 0)
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{
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vtkm::Float32 pideg = static_cast<vtkm::Float32>(vtkm::Pi_2());
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Quaternion newRotX;
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newRotX.setEulerAngles(-0.2f*dx*pideg/180.0f, 0.0f, 0.0f);
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qrot.mul(newRotX);
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Quaternion newRotY;
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newRotY.setEulerAngles(0.0f, 0.0f, -0.2f*dy*pideg/180.0f);
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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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// Respond to mouse button
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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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// Compute and render an isosurface for a uniform grid example
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int main(int argc, char* argv[])
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{
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typedef vtkm::cont::DeviceAdapterTraits<DeviceAdapter> DeviceAdapterTraits;
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typedef vtkm::cont::CellSetStructured<3> CellSet;
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std::cout << "Running IsosurfaceUniformGrid example on device adapter: "
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<< DeviceAdapterTraits::GetName() << std::endl;
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vtkm::cont::DataSet dataSet = MakeIsosurfaceTestDataSet(dims);
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vtkm::cont::ArrayHandle<vtkm::Float32> fieldArray;
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dataSet.GetField("nodevar").GetData().CopyTo(fieldArray);
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isosurfaceFilter = new vtkm::worklet::MarchingCubes<vtkm::Float32, DeviceAdapter>();
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isosurfaceFilter->Run(0.5,
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dataSet.GetCellSet().Cast<CellSet>(),
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dataSet.GetCoordinateSystem(),
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fieldArray,
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verticesArray,
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normalsArray);
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isosurfaceFilter->MapFieldOntoIsosurface(fieldArray,
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scalarsArray);
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std::cout << "Number of output vertices: " << verticesArray.GetNumberOfValues() << std::endl;
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std::cout << "vertices: ";
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vtkm::cont::printSummary_ArrayHandle(verticesArray, std::cout);
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std::cout << std::endl;
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std::cout << "normals: ";
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vtkm::cont::printSummary_ArrayHandle(normalsArray, std::cout);
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std::cout << std::endl;
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std::cout << "scalars: ";
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vtkm::cont::printSummary_ArrayHandle(scalarsArray, std::cout);
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std::cout << 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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#if (defined(VTKM_GCC) || defined(VTKM_CLANG))
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# pragma GCC diagnostic pop
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#endif
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