Es++ Sample: PyramidRotationOnIdleTime |
/****************************************************************************** * * Copyright (c) 2017 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * PyramidRotationOnIdleTime.cpp * *****************************************************************************/ // #include <es++/opengl/OpenGLApplication.h> #include <es++/opengl/OpenGLMainView.h> #include <es++/opengl/OpenGLView.h> #include <es++/opengl/OpenGLGC.h> #include <es++/opengl/OpenGLClientState.h> using namespace Gtk; namespace Es { class MainView :public Es::OpenGLMainView { private: /////////////////////////////////////////////////////// //Inner classes start. class SimpleView :public Es::OpenGLView { private: OpenGLGC gc; float angle; public: SimpleView() :OpenGLView() ,angle(2.0f) { } virtual void display() { angle += 0.4f; static GLfloat vertices[] = { -0.5f, -0.5f, -0.5f, 0.5f, -0.5f, -0.5f, 0.5f, -0.5f, 0.5f, -0.5f, -0.5f, 0.5f, 0.0f, 0.5f, 0.0f, }; //Colors(RGBAs) for the 5 vertices static GLfloat colors[] = { 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f }; //Indices for the 4 triangles. static GLint indices[] = { 2, 4, 3, 1, 4, 2, 0, 4, 1, 4, 0, 3 }; //Set a proportional perspective. gc.matrixMode(GL_PROJECTION); gc.loadIdentity(); gc.perspective(16.0, (double)width() / (double)height(), 0.5, 100.0); gc.matrixMode(GL_MODELVIEW); gc.clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); gc.loadIdentity(); gc.translate(0.0f,0.0f,-1.0f); gc.lookAt(2.0, 4.0, 6.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0); //Rotation around y-axis. gc.rotate(angle, 0.0, 1.0, 0.0); try { OpenGLClientState state1(GL_VERTEX_ARRAY); OpenGLClientState state2(GL_COLOR_ARRAY); gc.vertexPointer(3, GL_FLOAT, 0, vertices); gc.colorPointer (4, GL_FLOAT, 0, colors); gc.drawElements(GL_TRIANGLES, SizeOf(indices), GL_UNSIGNED_INT, indices); } catch (Exception& ex) { caught(ex); } } virtual void resize(int w, int h) { if (w == 0 || h == 0) { return; } gc.matrixMode(GL_PROJECTION); gc.loadIdentity(); gc.perspective(16.0, (double)w / (double)h, 0.5, 40.0); gc.matrixMode(GL_MODELVIEW); } virtual void initialize() { gc.enable( GL_DEPTH_TEST ); } }; // Inner classes end. /////////////////////////////////////////////////////// Es::HorizontalLayout horiz_layout; SimpleView simple_view; public: ////////////////////////////////////////////// //Constructor // MainView(Es::OpenGLApplication& applet, std::string& name, Es::Args& args) :OpenGLMainView(applet, name, args) { int w = (int)args.get(XmNwidth); int h = (int)args.get(XmNheight); Es::MainLayout& main_layout = get_main_layout(); main_layout.pack_start(horiz_layout); horiz_layout.pack_start(simple_view); OpenGLContext* context = applet.getOpenGLContext(); simple_view.set_opengl_context(context); simple_view.set_size_request(w, h); show_all_children(); } void render() { simple_view.render(); } }; } int main(int argc, char** argv) { Es::Environment env; try { std::string name = argv[0]; Es::OpenGLApplication applet(argc, argv); Es::Args args; args.set(XmNx, 20); args.set(XmNy, 40); args.set(XmNwidth, 400); args.set(XmNheight, 400); Es::MainView mainv(applet, name, args); mainv.show(); applet.run(mainv, 40); } catch (Es::Exception& ex) { caught(ex); } catch (...) { printf("Get exception \n"); } return 0; }