SoTimeCounter SoComposeVec3f

/*-------------------------------------------------------------- * Time counter engine. * The output from an time counter engine is used to control * horizontal and vertical motion of a figure object. * The resulting effect is that the figure jumps across * the screen. *------------------------------------------------------------*/#include <Inventor/SoDB.h>#include <Inventor/Win/SoWin.h>#include <Inventor/Win/SoWinRenderArea.h>#include <Inventor/engines/SoCompose.h>#include <Inventor/engines/SoElapsedTime.h>#include <Inventor/engines/SoTimeCounter.h>#include <Inventor/nodes/SoDirectionalLight.h>#include <Inventor/nodes/SoMaterial.h>#include <Inventor/nodes/SoPerspectiveCamera.h>#include <Inventor/nodes/SoRotationXYZ.h>#include <Inventor/nodes/SoSeparator.h>#include <Inventor/nodes/SoTransform.h>#include <Inventor/nodes/SoTranslation.h>intmain(int, char **argv){ // Initialize Inventor and Win HWND myWindow = SoWin::init(argv[0]); if (myWindow == NULL) exit(1); SoSeparator *root = new SoSeparator; root->ref(); // Add a camera and light SoPerspectiveCamera *myCamera = new SoPerspectiveCamera; myCamera->position.setValue(-8.0f, -7.0f, 20.0f); myCamera->heightAngle = (float)(M_PI/2.5f); myCamera->nearDistance = 15.0f; myCamera->farDistance = 25.0f; root->addChild(myCamera); root->addChild(new SoDirectionalLight); ////////////////////////////////////////////////////////////// // CODE FOR The Inventor Mentor STARTS HERE // Set up transformations SoTranslation *jumpTranslation = new SoTranslation; root->addChild(jumpTranslation); SoTransform *initialTransform = new SoTransform; initialTransform->translation.setValue(-20.0f, 0.0f, 0.0f); initialTransform->scaleFactor.setValue(40.0f, 40.0f, 40.0f); initialTransform->rotation.setValue(SbVec3f(1.0f, 0.0f, 0.0f), (float)(M_PI/2.0f)); root->addChild(initialTransform); // Read the man object from a file and add to the scene SoInput myInput; if (!myInput.openFile("../data/jumpyMan.iv")) exit (1); SoSeparator *manObject = SoDB::readAll(&myInput); if (manObject == NULL) exit (1); root->addChild(manObject); // Create two counters, and connect to X and Y translations. // The Y counter is small and high frequency. // The X counter is large and low frequency. // This results in small jumps across the screen, // left to right, again and again and again and .... SoTimeCounter *jumpHeightCounter = new SoTimeCounter; SoTimeCounter *jumpWidthCounter = new SoTimeCounter; SoComposeVec3f *jump = new SoComposeVec3f; jumpHeightCounter->max = 4; jumpHeightCounter->frequency = 1.5f; jumpWidthCounter->max = 40; jumpWidthCounter->frequency = 0.15f; jump->x.connectFrom(&jumpWidthCounter->output); jump->y.connectFrom(&jumpHeightCounter->output); jumpTranslation->translation.connectFrom(&jump->vector); // CODE FOR The Inventor Mentor ENDS HERE ////////////////////////////////////////////////////////////// SoWinRenderArea *myRenderArea = new SoWinRenderArea(myWindow); SbViewportRegion myRegion(myRenderArea->getSize()); myRenderArea->setSceneGraph(root); myRenderArea->setTitle("Jumping Man"); myRenderArea->show(); SoWin::show(myWindow); SoWin::mainLoop(); return 0;}