mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-07 19:08:58 +00:00
507222c489
In addition to this being necessary to be compatible with recent changes, it makes for cleaner declaration of these values.
193 lines
6.2 KiB
C++
193 lines
6.2 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/Math.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/testing/MakeTestDataSet.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 <vtkm/rendering/Window.h>
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#include <vtkm/rendering/WorldAnnotatorGL.h>
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#include <vtkm/rendering/RenderSurfaceGL.h>
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#include <vtkm/rendering/SceneRendererGL.h>
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#include <vtkm/rendering/ColorTable.h>
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vtkm::rendering::Window3D<vtkm::rendering::SceneRendererGL<VTKM_DEFAULT_DEVICE_ADAPTER_TAG>,
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vtkm::rendering::RenderSurfaceGL,
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vtkm::rendering::WorldAnnotatorGL> *window = NULL;
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const vtkm::Int32 W = 512, H = 512;
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int buttonStates[3] = {GLUT_UP, GLUT_UP, GLUT_UP};
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bool shiftKey = false;
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int lastx=-1, lasty=-1;
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void
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reshape(int, int)
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{
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//Don't allow resizing window.
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glutReshapeWindow(W,H);
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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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window->Paint();
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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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//std::cout<<"MOUSE MOVE: "<<x<<" "<<y<<std::endl;
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//Map to XY
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y = window->View.Height-y;
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if (lastx != -1 && lasty != -1)
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{
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vtkm::Float32 x1 = ((lastx*2.0f)/window->View.Width) - 1.0f;
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vtkm::Float32 y1 = ((lasty*2.0f)/window->View.Height) - 1.0f;
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vtkm::Float32 x2 = ((x*2.0f)/window->View.Width) - 1.0f;
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vtkm::Float32 y2 = ((y*2.0f)/window->View.Height) - 1.0f;
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if (buttonStates[0] == GLUT_DOWN)
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{
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if (shiftKey)
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window->View.Pan3D(x2-x1, y2-y1);
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else
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window->View.TrackballRotate(x1,y1, x2,y2);
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}
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else if (buttonStates[1] == GLUT_DOWN)
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window->View.Zoom3D(y2-y1);
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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 vtkmNotUsed(x), int vtkmNotUsed(y))
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{
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int modifiers = glutGetModifiers();
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shiftKey = modifiers & GLUT_ACTIVE_SHIFT;
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buttonStates[button] = state;
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//std::cout<<"Buttons: "<<buttonStates[0]<<" "<<buttonStates[1]<<" "<<buttonStates[2]<<" SHIFT= "<<shiftKey<<std::endl;
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//mouse down, reset.
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if (buttonStates[button] == GLUT_DOWN)
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{
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lastx = -1;
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lasty = -1;
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}
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}
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void Set3DView(vtkm::rendering::View &view,
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const vtkm::cont::CoordinateSystem &coords,
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vtkm::Int32 w, vtkm::Int32 h)
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{
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vtkm::Bounds coordsBounds =
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coords.GetBounds(VTKM_DEFAULT_DEVICE_ADAPTER_TAG());
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//set up a default view
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vtkm::Vec<vtkm::Float32,3> totalExtent;
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totalExtent[0] = vtkm::Float32(coordsBounds.X.Length());
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totalExtent[1] = vtkm::Float32(coordsBounds.Y.Length());
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totalExtent[2] = vtkm::Float32(coordsBounds.Z.Length());
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vtkm::Float32 mag = vtkm::Magnitude(totalExtent);
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vtkm::Normalize(totalExtent);
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view = vtkm::rendering::View(vtkm::rendering::View::VIEW_3D);
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view.View3d.Position = totalExtent * (mag * 2.f);
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view.View3d.Up = vtkm::Vec<vtkm::Float32,3>(0.f, 1.f, 0.f);
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view.View3d.LookAt = totalExtent * (mag * .5f);
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view.View3d.FieldOfView = 60.f;
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view.NearPlane = 1.f;
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view.FarPlane = 100.f;
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view.Width = w;
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view.Height = h;
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}
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// Compute and render an isosurface for a uniform grid example
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int
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main(int argc, char* argv[])
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{
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vtkm::cont::testing::MakeTestDataSet maker;
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vtkm::cont::DataSet ds = maker.Make3DUniformDataSet0();
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lastx = lasty = -1;
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glutInit(&argc, argv);
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glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
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glutInitWindowSize(W,H);
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glutCreateWindow("VTK-m Rendering");
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glutDisplayFunc(displayCall);
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glutMotionFunc(mouseMove);
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glutMouseFunc(mouseCall);
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glutReshapeFunc(reshape);
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const vtkm::cont::CoordinateSystem coords = ds.GetCoordinateSystem();
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vtkm::rendering::View view;
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Set3DView(view, coords, W, H);
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vtkm::rendering::Color bg(0.2f, 0.2f, 0.2f, 1.0f);
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vtkm::rendering::RenderSurfaceGL surface(W,H,bg);
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vtkm::rendering::SceneRendererGL<VTKM_DEFAULT_DEVICE_ADAPTER_TAG> sceneRenderer;
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vtkm::rendering::Scene3D scene;
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scene.Plots.push_back(vtkm::rendering::Plot(ds.GetCellSet(),
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ds.GetCoordinateSystem(),
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ds.GetField("pointvar"),
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vtkm::rendering::ColorTable("thermal")));
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//Create vtkm rendering stuff.
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window = new vtkm::rendering::Window3D<vtkm::rendering::SceneRendererGL<VTKM_DEFAULT_DEVICE_ADAPTER_TAG>,
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vtkm::rendering::RenderSurfaceGL,
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vtkm::rendering::WorldAnnotatorGL>(scene, sceneRenderer,
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surface, view, bg);
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window->Initialize();
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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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