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https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-16 17:22:55 +00:00
minor bug fix in edge table, visually verify that both Hex and Tetra works
This commit is contained in:
Li-Ta Lo
parent
fda22df5b7
commit
1efdffb1b3
@ -25,4 +25,9 @@ if(TARGET OpenGL::GL AND
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MODIFY_CUDA_FLAGS
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DEVICE_SOURCES IsosurfaceUniformGrid.cxx)
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add_executable(IsosurfaceTetra IsosurfaceTetra.cxx quaternion.h)
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target_link_libraries(IsosurfaceTetra PRIVATE vtkm_filter ${gl_libs})
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vtkm_add_target_information(IsosurfaceTetra
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MODIFY_CUDA_FLAGS
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DEVICE_SOURCES IsosurfaceUniformGrid.cxx)
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endif()
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288
examples/isosurface/IsosurfaceTetra.cxx
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288
examples/isosurface/IsosurfaceTetra.cxx
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@ -0,0 +1,288 @@
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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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//
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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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#include <vtkm/filter/MarchingCubes.h>
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#include <vtkm/filter/Tetrahedralize.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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#include <vtkm/cont/Initialize.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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static vtkm::Id3 dims(256, 256, 256);
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static vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Float32, 3>> verticesArray, normalsArray;
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static vtkm::cont::ArrayHandle<vtkm::Float32> scalarsArray;
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static Quaternion qrot;
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static int lastx, lasty;
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static int mouse_state = 1;
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namespace
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{
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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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using ControlSignature = void(FieldIn vertexId, FieldOut v);
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using ExecutionSignature = void(_1, _2);
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using InputDomain = _1;
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const vtkm::Id xdim, ydim, zdim;
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const vtkm::Float32 xmin, ymin, zmin, xmax, ymax, zmax;
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const vtkm::Id cellsPerLayer;
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VTKM_CONT
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TangleField(const vtkm::Id3 dims, const vtkm::Float32 mins[3], const vtkm::Float32 maxs[3])
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: xdim(dims[0])
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, ydim(dims[1])
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, zdim(dims[2])
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, xmin(mins[0])
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, ymin(mins[1])
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, zmin(mins[2])
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, xmax(maxs[0])
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, ymax(maxs[1])
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, zmax(maxs[2])
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, cellsPerLayer((xdim) * (ydim)){};
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VTKM_EXEC
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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::Float32 fx = static_cast<vtkm::Float32>(x) / static_cast<vtkm::Float32>(xdim - 1);
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const vtkm::Float32 fy = static_cast<vtkm::Float32>(y) / static_cast<vtkm::Float32>(xdim - 1);
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const vtkm::Float32 fz = static_cast<vtkm::Float32>(z) / static_cast<vtkm::Float32>(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 +
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zz * zz * zz * zz - 5.0f * zz * zz + 11.8f) *
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0.2f +
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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::Float32 mins[3] = { -1.0f, -1.0f, -1.0f };
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vtkm::Float32 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(
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0, 1, vdims[0] * vdims[1] * vdims[2]);
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vtkm::worklet::DispatcherMapField<TangleField> tangleFieldDispatcher(
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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(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 coordinates(vdims, origin, spacing);
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dataSet.AddCoordinateSystem(vtkm::cont::CoordinateSystem("coordinates", coordinates));
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dataSet.AddField(
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vtkm::cont::Field("nodevar", vtkm::cont::Field::Association::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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Quaternion newRotX;
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newRotX.setEulerAngles(-0.2f * dx * vtkm::Pi_180f(), 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 * vtkm::Pi_180f());
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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)
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mouse_state = state;
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if ((button == 0) && (state == 0))
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{
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lastx = x;
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lasty = y;
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}
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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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//parse out all vtk-m related command line options
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auto opts =
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vtkm::cont::InitializeOptions::DefaultAnyDevice | vtkm::cont::InitializeOptions::Strict;
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vtkm::cont::Initialize(argc, argv, opts);
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vtkm::cont::DataSet dataSet = MakeIsosurfaceTestDataSet(dims);
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vtkm::filter::Tetrahedralize tetrahedralize;
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vtkm::cont::DataSet tetra = tetrahedralize.Execute(dataSet);
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vtkm::filter::MarchingCubes filter;
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filter.SetGenerateNormals(true);
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filter.SetMergeDuplicatePoints(false);
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filter.SetIsoValue(0, 0.1);
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filter.SetActiveField("nodevar");
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filter.SetFieldsToPass({ "nodevar" });
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vtkm::cont::DataSet outputData = filter.Execute(tetra);
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//need to extract vertices, normals, and scalars
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using VertType = vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Float32, 3>>;
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vtkm::cont::CoordinateSystem coords = outputData.GetCoordinateSystem();
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verticesArray = coords.GetData().Cast<VertType>();
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normalsArray = outputData.GetField("normals").GetData().Cast<VertType>();
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scalarsArray =
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outputData.GetField("nodevar").GetData().Cast<vtkm::cont::ArrayHandle<vtkm::Float32>>();
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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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verticesArray.ReleaseResources();
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normalsArray.ReleaseResources();
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scalarsArray.ReleaseResources();
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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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@ -85,13 +85,13 @@ VTKM_STATIC_CONSTEXPR_ARRAY vtkm::IdComponent NumTrianglesTable[] = {
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};
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VTKM_STATIC_CONSTEXPR_ARRAY vtkm::IdComponent EdgeTable[] = {
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// CELL_SHAPE_TETRA, 4 edge * 2 vertices/edge = 8 entries
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// CELL_SHAPE_TETRA, 6 edge * 2 vertices/edge = 12 entries
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0, 1, // edge 0 : vertex 0 -> vertex 1
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1, 2, // edge 1 : vertex 1 -> vertex 2
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0, 2, // edge 2 : vertex 0 -> vertex 2
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0, 3, // edge 3 : vertex 0 -> vertex 3
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1, 3, // edge 4 : vertex 1 -> vertex 3
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2, 3, // edge 5 : vertex 2 -> vertex 3
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2, 3, // edge 5 : vertex 2 -> vertex 3
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// CELL_SHAPE_HEXAHEDRON, 12 edges * 2 vertices/edge = 24 entries
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0, 1, // bottom layer
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1, 2,
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@ -122,9 +122,9 @@ VTKM_STATIC_CONSTEXPR_ARRAY vtkm::IdComponent EdgeTableOffset[] = {
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0, // CELL_SHAPE_QUAD = 9,
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0, // CELL_SHAPE_TETRA = 10,
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0, // CELL_SHAPE_VOXEL = 11,
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8, // CELL_SHAPE_HEXAHEDRON = 12,
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8+24, // CELL_SHAPE_WEDGE = 13,
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8+24+18 // CELL_SHAPE_PYRAMID = 14,
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12, // CELL_SHAPE_HEXAHEDRON = 12,
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12+24, // CELL_SHAPE_WEDGE = 13,
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12+24+18 // CELL_SHAPE_PYRAMID = 14,
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};
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VTKM_STATIC_CONSTEXPR_ARRAY vtkm::IdComponent TriangleTable[] = {
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