vp_tree_halo.rar_creator模型_halo_vP_vp tree_树木模型显示

#include <vuAllocTracer.h> #include <vsGeometry.h> #include <vsTraversalUser.h> #include <vrMode.h> #include <vrState.h> #include <vpApp.h> #include <vpObject.h> // track memory leaks vuAllocTracer m_allocTracer; class myApp : public vpApp { public: /** * Constructor */ myApp() { m_ref = 0.1f; // this is the loader default value } /** * Destructor */ ~myApp() { // unreference member variables which cache Vega Prime class instances m_object->unref(); } /** * Configure my app */ int configure() { // pre-configuration // configure vega prime system first vpApp::configure(); // post-configuration // Increase the reference count by one for all member variables which // cache the Vega Prime class instances. // // All VSG/Vega Prime class instances are referenced counted. // The initial reference count is 0 after the instance is created. // When the reference count is smaller or equal to 0 in unref(), // the instance will be deleted automatically. Increasing reference // count here for all member variables will guarantee that they will // not be deleted until myApp is deleted. m_object = *vpObject::begin(); assert(m_object); m_object->ref(); return vsgu::SUCCESS; } /** * Override keyboard input */ virtual void onKeyInput(vrWindow::Key key, int mod) { switch (key) { case vrWindow::KEY_a: // decrease the alpha test reference m_ref -= 0.01f; if (m_ref < 0) m_ref = 0.0f; updateAlphaTestReference(); printf("alpha test reference %g\n", m_ref); break; case vrWindow::KEY_A: // increase the alpha test reference m_ref += 0.01f; if (m_ref > 1) m_ref = 1.0f; updateAlphaTestReference(); printf("alpha test reference %g\n", m_ref); break; default: vpApp::onKeyInput(key, mod); break; } } // traversal function for updating the alpha test value vsTraversal::Result travFuncGeometry(vsNode *node, int) { vrState *state = static_cast<vsGeometry *>(node)->getState(); vrAlphaTest::Element alphaTestElement; alphaTestElement.copy(vrGetElement(state, vrAlphaTest::Element::Id)); alphaTestElement.m_ref = m_ref; alphaTestElement.m_mode = vrAlphaTest::MODE_GREATER; state->setElement(vrAlphaTest::Element::Id, &alphaTestElement); return vsTraversal::RESULT_CONTINUE; } // do a traversal to update the alpha test reference value void updateAlphaTestReference() { vsTraversalUser<int, vsTraversalLookUpNodeId> trav; trav.addPreVisit(vsGeometry::getStaticNodeId(), this, &myApp::travFuncGeometry); trav.visit(m_object); } private: // our current alpha test reference value float m_ref; // our object vpObject *m_object; }; int main(int argc, char *argv[]) { // initialize vega prime vp::initialize(argc, argv); // create my app instance myApp *app = new myApp; // load acf file if (argc <= 1) app->define("vp_tree_halo.acf"); else app->define(argv[1]); // configure my app app->configure(); // runtime loop app->run(); // unref my app instance app->unref(); // shutdown vega prime vp::shutdown(); return 0; }