<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> <title>gtkglextmm: logo.cc</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.4.4 --> <div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="namespaces.html">Namespace List</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical List</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="dirs.html">Directories</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="namespacemembers.html">Namespace Members</a> | <a class="qindex" href="functions.html">Class Members</a> | <a class="qindex" href="globals.html">File Members</a> | <a class="qindex" href="examples.html">Examples</a></div> <h1>logo.cc</h1>GtkGLExt logo demo.<p> <div class="fragment"><pre class="fragment"><span class="comment">// -*- C++ -*-</span> <span class="comment">/*</span> <span class="comment"> * logo.cc:</span> <span class="comment"> * GtkGLExt logo demo.</span> <span class="comment"> *</span> <span class="comment"> * written by Naofumi Yasufuku <naofumi@users.sourceforge.net></span> <span class="comment"> */</span> <span class="preprocessor">#include <iostream></span> <span class="preprocessor">#include <cstdlib></span> <span class="preprocessor">#include <cstring></span> <span class="preprocessor">#include <cmath></span> <span class="preprocessor">#include <GL/gl.h></span> <span class="preprocessor">#include <GL/glu.h></span> <span class="preprocessor">#ifdef G_OS_WIN32</span> <span class="preprocessor"></span><span class="preprocessor">#define WIN32_LEAN_AND_MEAN 1</span> <span class="preprocessor"></span><span class="preprocessor">#include <windows.h></span> <span class="preprocessor">#endif</span> <span class="preprocessor"></span> <span class="preprocessor">#include "logo.h"</span> <span class="comment">//</span> <span class="comment">// logo_draw_*() functions.</span> <span class="comment">//</span> <span class="keyword">namespace </span>LogoModel { <span class="preprocessor"> #include "logo-model.h"</span> } <span class="comment">//</span> <span class="comment">// Trackball utilities.</span> <span class="comment">//</span> <span class="keyword">namespace </span>Trackball { <span class="keyword">extern</span> <span class="stringliteral">"C"</span> { <span class="preprocessor"> #include "trackball.h"</span> } } <span class="preprocessor">#define DIG_2_RAD (G_PI / 180.0)</span> <span class="preprocessor"></span><span class="preprocessor">#define RAD_2_DIG (180.0 / G_PI)</span> <span class="preprocessor"></span> <span class="comment">//</span> <span class="comment">// OpenGL frame buffer configuration utilities.</span> <span class="comment">//</span> <span class="comment"></span> <span class="keyword">struct </span>GLConfigUtil { <span class="keyword">static</span> <span class="keywordtype">void</span> print_gl_attrib(<span class="keyword">const</span> Glib::RefPtr<const Gdk::GL::Config>& glconfig, <span class="keyword">const</span> <span class="keywordtype">char</span>* attrib_str, <span class="keywordtype">int</span> attrib, <span class="keywordtype">bool</span> is_boolean); <span class="keyword">static</span> <span class="keywordtype">void</span> examine_gl_attrib(<span class="keyword">const</span> Glib::RefPtr<const Gdk::GL::Config>& glconfig); }; <span class="comment">//</span> <span class="comment">// Print a configuration attribute.</span> <span class="comment">//</span> <span class="keywordtype">void</span> GLConfigUtil::print_gl_attrib(<span class="keyword">const</span> Glib::RefPtr<const Gdk::GL::Config>& glconfig, <span class="keyword">const</span> <span class="keywordtype">char</span>* attrib_str, <span class="keywordtype">int</span> attrib, <span class="keywordtype">bool</span> is_boolean) { <span class="keywordtype">int</span> value; <span class="keywordflow">if</span> (glconfig->get_attrib(attrib, value)) { std::cout << attrib_str << <span class="stringliteral">" = "</span>; <span class="keywordflow">if</span> (is_boolean) std::cout << (value == <span class="keyword">true</span> ? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>) << std::endl; <span class="keywordflow">else</span> std::cout << value << std::endl; } <span class="keywordflow">else</span> { std::cout << <span class="stringliteral">"*** Cannot get "</span> << attrib_str << <span class="stringliteral">" attribute value\n"</span>; } } <span class="comment">//</span> <span class="comment">// Print configuration attributes.</span> <span class="comment">//</span> <span class="keywordtype">void</span> GLConfigUtil::examine_gl_attrib(<span class="keyword">const</span> Glib::RefPtr<const Gdk::GL::Config>& glconfig) { std::cout << <span class="stringliteral">"\nOpenGL visual configurations :\n\n"</span>; std::cout << <span class="stringliteral">"glconfig->is_rgba() = "</span> << (glconfig->is_rgba() ? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>) << std::endl; std::cout << <span class="stringliteral">"glconfig->is_double_buffered() = "</span> << (glconfig->is_double_buffered() ? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>) << std::endl; std::cout << <span class="stringliteral">"glconfig->is_stereo() = "</span> << (glconfig->is_stereo() ? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>) << std::endl; std::cout << <span class="stringliteral">"glconfig->has_alpha() = "</span> << (glconfig->has_alpha() ? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>) << std::endl; std::cout << <span class="stringliteral">"glconfig->has_depth_buffer() = "</span> << (glconfig->has_depth_buffer() ? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>) << std::endl; std::cout << <span class="stringliteral">"glconfig->has_stencil_buffer() = "</span> << (glconfig->has_stencil_buffer() ? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>) << std::endl; std::cout << <span class="stringliteral">"glconfig->has_accum_buffer() = "</span> << (glconfig->has_accum_buffer() ? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>) << std::endl; std::cout << std::endl; print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::USE_GL"</span>, <a name="a46"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a15">Gdk::GL::USE_GL</a>, <span class="keyword">true</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::BUFFER_SIZE"</span>, <a name="a47"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a16">Gdk::GL::BUFFER_SIZE</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::LEVEL"</span>, <a name="a48"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a17">Gdk::GL::LEVEL</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::RGBA"</span>, <a name="a49"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a18">Gdk::GL::RGBA</a>, <span class="keyword">true</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::DOUBLEBUFFER"</span>, <a name="a50"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a19">Gdk::GL::DOUBLEBUFFER</a>, <span class="keyword">true</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::STEREO"</span>, <a name="a51"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a20">Gdk::GL::STEREO</a>, <span class="keyword">true</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::AUX_BUFFERS"</span>, <a name="a52"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a21">Gdk::GL::AUX_BUFFERS</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::RED_SIZE"</span>, <a name="a53"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a22">Gdk::GL::RED_SIZE</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::GREEN_SIZE"</span>, <a name="a54"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a23">Gdk::GL::GREEN_SIZE</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::BLUE_SIZE"</span>, <a name="a55"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a24">Gdk::GL::BLUE_SIZE</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::ALPHA_SIZE"</span>, <a name="a56"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a25">Gdk::GL::ALPHA_SIZE</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::DEPTH_SIZE"</span>, <a name="a57"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a26">Gdk::GL::DEPTH_SIZE</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::STENCIL_SIZE"</span>, <a name="a58"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a27">Gdk::GL::STENCIL_SIZE</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::ACCUM_RED_SIZE"</span>, <a name="a59"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a28">Gdk::GL::ACCUM_RED_SIZE</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::ACCUM_GREEN_SIZE"</span>, <a name="a60"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a29">Gdk::GL::ACCUM_GREEN_SIZE</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::ACCUM_BLUE_SIZE"</span>, <a name="a61"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a30">Gdk::GL::ACCUM_BLUE_SIZE</a>, <span class="keyword">false</span>); print_gl_attrib(glconfig, <span class="stringliteral">"Gdk::GL::ACCUM_ALPHA_SIZE"</span>, <a name="a62"></a><a class="code" href="group__gdkmm__glEnums.html#gga36a31">Gdk::GL::ACCUM_ALPHA_SIZE</a>, <span class="keyword">false</span>); std::cout << std::endl; } <span class="comment">//</span> <span class="comment">// Logo classes.</span> <span class="comment">//</span> <span class="comment"></span> <span class="keyword">namespace </span>Logo { <span class="comment">//</span> <span class="comment">// View class implementation.</span> <span class="comment">//</span> <span class="keyword">const</span> <span class="keywordtype">float</span> View::NEAR_CLIP = 2.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::FAR_CLIP = 60.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::INIT_POS_X = 0.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::INIT_POS_Y = 0.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::INIT_POS_Z = -30.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::INIT_AXIS_X = 1.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::INIT_AXIS_Y = 0.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::INIT_AXIS_Z = 0.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::INIT_ANGLE = 20.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::INIT_SCALE = 1.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::SCALE_MAX = 2.0; <span class="keyword">const</span> <span class="keywordtype">float</span> View::SCALE_MIN = 0.5; View::View() : m_Scale(INIT_SCALE), m_BeginX(0.0), m_BeginY(0.0) { reset(); } View::~View() { } <span class="keywordtype">void</span> View::frustum(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h) { glViewport(0, 0, w, h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); <span class="keywordflow">if</span> (w > h) { <span class="keywordtype">float</span> aspect = static_cast<float>(w) / static_cast<float>(h); glFrustum(-aspect, aspect, -1.0, 1.0, NEAR_CLIP, FAR_CLIP); } <span class="keywordflow">else</span> { <span class="keywordtype">float</span> aspect = static_cast<float>(h) / static_cast<float>(w); glFrustum(-1.0, 1.0, -aspect, aspect, NEAR_CLIP, FAR_CLIP); } glMatrixMode(GL_MODELVIEW); } <span class="keywordtype">void</span> View::xform() { glTranslatef(m_Pos[0], m_Pos[1], m_Pos[2]); glScalef(m_Scale, m_Scale, m_Scale); <span class="keywordtype">float</span> m[4][4]; Trackball::build_rotmatrix(m, m_Quat); glMultMatrixf(&m[0][0]); } <span class="keywordtype">void</span> View::reset() { m_Pos[0] = INIT_POS_X; m_Pos[1] = INIT_POS_Y; m_Pos[2] = INIT_POS_Z; <span class="keywordtype">float</span> sine = sin(0.5 * INIT_ANGLE * DIG_2_RAD); m_Quat[0] = INIT_AXIS_X * sine; m_Quat[1] = INIT_AXIS_Y * sine; m_Quat[2] = INIT_AXIS_Z * sine; m_Quat[3] = cos(0.5 * INIT_ANGLE * DIG_2_RAD); m_Scale = INIT_SCALE; } <span class="keywordtype">bool</span> View::on_button_press_event(GdkEventButton* event, Scene* scene) { m_BeginX = event->x; m_BeginY = event->y; <span class="comment">// don't block</span> <span class="keywordflow">return</span> <span class="keyword">false</span>; } <span class="keywordtype">bool</span> View::on_motion_notify_event(GdkEventMotion* event, Scene* scene) { <span class="keywordflow">if</span> (scene == 0) <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="keywordtype">float</span> w = scene->get_width(); <span class="keywordtype">float</span> h = scene->get_height(); <span class="keywordtype">float</span> x = event->x; <span class="keywordtype">float</span> y = event->y; <span class="keywordtype">float</span> d_quat[4]; <span class="keywordtype">bool</span> redraw = <span class="keyword">false</span>; <span class="comment">// Rotation.</span> <span class="keywordflow">if</span> (event->state & GDK_BUTTON1_MASK) { Trackball::trackball(d_quat, (2.0 * m_BeginX - w) / w, (h - 2.0 * m_BeginY) / h, (2.0 * x - w) / w, (h - 2.0 * y) / h); Trackball::add_quats(d_quat, m_Quat, m_Quat); redraw = <span class="keyword">true</span>; } <span class="comment">// Scaling.</span> <span class="keywordflow">if</span> (event->state & GDK_BUTTON2_MASK) { m_Scale = m_Scale * (1.0 + (y - m_BeginY) / h); <span class="keywordflow">if</span> (m_Scale > SCALE_MAX) m_Scale = SCALE_MAX; <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_Scale < SCALE_MIN) m_Scale = SCALE_MIN; redraw = <span class="keyword">true</span>; } m_BeginX = x; m_BeginY = y; <span class="keywordflow">if</span> (redraw && !scene->anim_is_enabled()) scene->invalidate(); <span class="comment">// don't block</span> <span class="keywordflow">return</span> <span class="keyword">false</span>; } <span class="comment">//</span> <span class="comment">// Model class implementation.</span> <span class="comment">//</span> <span class="keyword">const</span> <span class="keywordtype">float</span> Model::MAT_SPECULAR[4] = { 0.5, 0.5, 0.5, 1.0 }; <span class="keyword">const</span> <span class="keywordtype">float</span> Model::MAT_SHININESS[1] = { 10.0 }; <span class="keyword">const</span> <span class="keywordtype">float</span> Model::MAT_BLACK[4] = { 0.0, 0.0, 0.0, 1.0 }; <span class="keyword">const</span> <span class="keywordtype">float</span> Model::MAT_RED[4] = { 1.0, 0.0, 0.0, 1.0 }; <span class="keyword">const</span> <span class="keywordtype">float</span> Model::MAT_GREEN[4] = { 0.0, 1.0, 0.0, 1.0 }; <span class="keyword">const</span> <span class="keywordtype">float</span> Model::MAT_BLUE[4] = { 0.0, 0.0, 1.0, 1.0 }; <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> Model::DEFAULT_ROT_COUNT = 100; <span class="keyword">static</span> <span class="keywordtype">float</span> AXIS_X[3] = { 1.0, 0.0, 0.0 }; <span class="keyword">static</span> <span class="keywordtype">float</span> AXIS_Y[3] = { 0.0, 1.0, 0.0 }; <span class="keyword">static</span> <span class="keywordtype">float</span> AXIS_Z[3] = { 0.0, 0.0, 1.0 }; <span class="keyword">const</span> Model::RotMode Model::ROT_MODE[] = { { AXIS_X, 1.0 }, { AXIS_Y, 1.0 }, { AXIS_X, 1.0 }, { AXIS_Z, 1.0 }, { AXIS_X, 1.0 }, { AXIS_Y, -1.0 }, { AXIS_X, 1.0 }, { AXIS_Z, -1.0 }, { 0, 0.0 } <span class="comment">// terminator</span> }; Model::Model(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rot_count, <span class="keywordtype">bool</span> enable_anim) : m_RotCount(rot_count), m_EnableAnim(enable_anim), m_Mode(0), m_Counter(0) { reset_anim(); } Model::~Model() { } <span class="keywordtype">void</span> Model::init_gl() { glEnable(GL_CULL_FACE); glPushMatrix(); glMaterialfv(GL_FRONT, GL_SPECULAR, MAT_SPECULAR); glMaterialfv(GL_FRONT, GL_SHININESS, MAT_SHININESS); <span class="comment">/* Center black cube. */</span> glNewList(CUBE, GL_COMPILE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_BLACK); LogoModel::logo_draw_cube(); glEndList(); <span class="comment">/* Forward "G". */</span> glNewList(G_FORWARD, GL_COMPILE); glDisable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_BLUE); LogoModel::logo_draw_g_plane(); glEnable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_BLACK); LogoModel::logo_draw_g(); glEndList(); <span class="comment">/* Backward "G". */</span> glNewList(G_BACKWARD, GL_COMPILE); glPushMatrix(); glRotatef(180.0, 1.0, 0.0, 0.0); glDisable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_BLUE); LogoModel::logo_draw_g_plane(); glEnable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_BLACK); LogoModel::logo_draw_g(); glPopMatrix(); glEndList(); <span class="comment">/* Forward "T". */</span> glNewList(T_FORWARD, GL_COMPILE); glDisable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_RED); LogoModel::logo_draw_t_plane(); glEnable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_BLACK); LogoModel::logo_draw_t(); glEndList(); <span class="comment">/* Backward "T". */</span> glNewList(T_BACKWARD, GL_COMPILE); glPushMatrix(); glRotatef(180.0, 1.0, 0.0, 0.0); glDisable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_RED); LogoModel::logo_draw_t_plane(); glEnable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_BLACK); LogoModel::logo_draw_t(); glPopMatrix(); glEndList(); <span class="comment">/* Forward "K". */</span> glNewList(K_FORWARD, GL_COMPILE); glDisable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_GREEN); LogoModel::logo_draw_k_plane(); glEnable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_BLACK); LogoModel::logo_draw_k(); glEndList(); <span class="comment">/* Backward "K". */</span> glNewList(K_BACKWARD, GL_COMPILE); glPushMatrix(); glRotatef(180.0, 0.0, 0.0, 1.0); glDisable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_GREEN); LogoModel::logo_draw_k_plane(); glEnable(GL_CULL_FACE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, MAT_BLACK); LogoModel::logo_draw_k(); glPopMatrix(); glEndList(); glPopMatrix(); glEnable(GL_NORMALIZE); } <span class="keywordtype">void</span> Model::draw() { <span class="comment">// Init GL context.</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> initialized = <span class="keyword">false</span>; <span class="keywordflow">if</span> (!initialized) { init_gl(); initialized = <span class="keyword">true</span>; } <span class="comment">// Animation.</span> <span class="keywordflow">if</span> (m_EnableAnim) { <span class="keywordflow">if</span> (m_Counter == m_RotCount) { <span class="keywordflow">if</span> (ROT_MODE[++m_Mode].axis == 0) m_Mode = 0; m_Counter = 0; } <span class="keywordtype">float</span> d_quat[4]; Trackball::axis_to_quat(ROT_MODE[m_Mode].axis, ROT_MODE[m_Mode].sign * G_PI_2 / m_RotCount, d_quat); Trackball::add_quats(d_quat, m_Quat, m_Quat); ++m_Counter; } <span class="comment">// Draw logo model.</span> glPushMatrix(); glTranslatef(m_Pos[0], m_Pos[1], m_Pos[2]); <span class="keywordtype">float</span> m[4][4]; Trackball::build_rotmatrix(m, m_Quat); glMultMatrixf(&m[0][0]); glRotatef(90.0, 1.0, 0.0, 0.0); glCallList(CUBE); glCallList(G_FORWARD); glCallList(G_BACKWARD); glCallList(T_FORWARD); glCallList(T_BACKWARD); glCallList(K_FORWARD); glCallList(K_BACKWARD); glPopMatrix(); } <span class="keywordtype">void</span> Model::reset_anim() { m_Pos[0] = 0.0; m_Pos[1] = 0.0; m_Pos[2] = 0.0; m_Quat[0] = 0.0; m_Quat[1] = 0.0; m_Quat[2] = 0.0; m_Quat[3] = 1.0; m_Mode = 0; m_Counter = 0; } <span class="comment">//</span> <span class="comment">// Scene class implementation.</span> <span class="comment">//</span> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> Scene::TIMEOUT_INTERVAL = 10; <span class="keyword">const</span> <span class="keywordtype">float</span> Scene::CLEAR_COLOR[4] = { 0.5, 0.5, 0.8, 1.0 }; <span class="keyword">const</span> <span class="keywordtype">float</span> Scene::CLEAR_DEPTH = 1.0; <span class="keyword">const</span> <span class="keywordtype">float</span> Scene::LIGHT0_POSITION[4] = { 0.0, 0.0, 30.0, 0.0 }; <span class="keyword">const</span> <span class="keywordtype">float</span> Scene::LIGHT0_DIFFUSE[4] = { 1.0, 1.0, 1.0, 1.0 }; <span class="keyword">const</span> <span class="keywordtype">float</span> Scene::LIGHT0_SPECULAR[4] = { 1.0, 1.0, 1.0, 1.0 }; Scene::Scene(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rot_count, <span class="keywordtype">bool</span> enable_anim) : m_Menu(0), m_Model(rot_count, enable_anim) { <span class="comment">//</span> <span class="comment">// Configure OpenGL-capable visual.</span> <span class="comment">//</span> Glib::RefPtr<Gdk::GL::Config> glconfig; <span class="comment">// Try double-buffered visual</span> glconfig = <a name="a63"></a><a class="code" href="classGdk_1_1GL_1_1Config.html#e0">Gdk::GL::Config::create</a>(<a name="a64"></a><a class="code" href="group__gdkmm__glEnums.html#gga35a0">Gdk::GL::MODE_RGB</a> | <a name="a65"></a><a class="code" href="group__gdkmm__glEnums.html#gga35a7">Gdk::GL::MODE_DEPTH</a> | <a name="a66"></a><a class="code" href="group__gdkmm__glEnums.html#gga35a4">Gdk::GL::MODE_DOUBLE</a>); <span class="keywordflow">if</span> (!glconfig) { std::cerr << <span class="stringliteral">"*** Cannot find the double-buffered visual.\n"</span> << <span class="stringliteral">"*** Trying single-buffered visual.\n"</span>; <span class="comment">// Try single-buffered visual</span> glconfig = <a class="code" href="classGdk_1_1GL_1_1Config.html#e0">Gdk::GL::Config::create</a>(<a class="code" href="group__gdkmm__glEnums.html#gga35a0">Gdk::GL::MODE_RGB</a> | <a class="code" href="group__gdkmm__glEnums.html#gga35a7">Gdk::GL::MODE_DEPTH</a>); <span class="keywordflow">if</span> (!glconfig) { std::cerr << <span class="stringliteral">"*** Cannot find any OpenGL-capable visual.\n"</span>; std::exit(1); } } <span class="comment">// print frame buffer attributes.</span> GLConfigUtil::examine_gl_attrib(glconfig); <span class="comment">//</span> <span class="comment">// Set OpenGL-capability to the widget.</span> <span class="comment">//</span> set_gl_capability(glconfig); <span class="comment">//</span> <span class="comment">// Add events.</span> <span class="comment">//</span> add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK | Gdk::BUTTON_PRESS_MASK | Gdk::VISIBILITY_NOTIFY_MASK); <span class="comment">// View transformation signals.</span> signal_button_press_event().connect( sigc::bind(sigc::mem_fun(m_View, &View::on_button_press_event), <span class="keyword">this</span>)); signal_motion_notify_event().connect( sigc::bind(sigc::mem_fun(m_View, &View::on_motion_notify_event), <span class="keyword">this</span>)); <span class="comment">//</span> <span class="comment">// Popup menu.</span> <span class="comment">//</span> m_Menu = create_popup_menu(); } Scene::~Scene() { } <span class="keywordtype">void</span> Scene::on_realize() { <span class="comment">// We need to call the base on_realize()</span> Gtk::DrawingArea::on_realize(); <span class="comment">//</span> <span class="comment">// Get GL::Drawable.</span> <span class="comment">//</span> Glib::RefPtr<Gdk::GL::Drawable> gldrawable = get_gl_drawable(); <span class="comment">//</span> <span class="comment">// GL calls.</span> <span class="comment">//</span> <span class="comment">// *** OpenGL BEGIN ***</span> <span class="keywordflow">if</span> (!gldrawable->gl_begin(get_gl_context())) <span class="keywordflow">return</span>; glClearColor(CLEAR_COLOR[0], CLEAR_COLOR[1], CLEAR_COLOR[2], CLEAR_COLOR[3]); glClearDepth(CLEAR_DEPTH); glLightfv(GL_LIGHT0, GL_POSITION, LIGHT0_POSITION); glLightfv(GL_LIGHT0, GL_DIFFUSE, LIGHT0_DIFFUSE); glLightfv(GL_LIGHT0, GL_SPECULAR, LIGHT0_SPECULAR); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glEnable(GL_DEPTH_TEST); glShadeModel(GL_SMOOTH); gldrawable->gl_end(); <span class="comment">// *** OpenGL END ***</span> } <span class="keywordtype">bool</span> Scene::on_configure_event(GdkEventConfigure* event) { <span class="comment">//</span> <span class="comment">// Get GL::Drawable.</span> <span class="comment">//</span> Glib::RefPtr<Gdk::GL::Drawable> gldrawable = get_gl_drawable(); <span class="comment">//</span> <span class="comment">// GL calls.</span> <span class="comment">//</span> <span class="comment">// *** OpenGL BEGIN ***</span> <span class="keywordflow">if</span> (!gldrawable->gl_begin(get_gl_context())) <span class="keywordflow">return</span> <span class="keyword">false</span>; m_View.frustum(get_width(), get_height()); gldrawable->gl_end(); <span class="comment">// *** OpenGL END ***</span> <span class="keywordflow">return</span> <span class="keyword">true</span>; } <span class="keywordtype">bool</span> Scene::on_expose_event(GdkEventExpose* event) { <span class="comment">//</span> <span class="comment">// Get GL::Drawable.</span> <span class="comment">//</span> Glib::RefPtr<Gdk::GL::Drawable> gldrawable = get_gl_drawable(); <span class="comment">//</span> <span class="comment">// GL calls.</span> <span class="comment">//</span> <span class="comment">// *** OpenGL BEGIN ***</span> <span class="keywordflow">if</span> (!gldrawable->gl_begin(get_gl_context())) <span class="keywordflow">return</span> <span class="keyword">false</span>; glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); <span class="comment">// View transformation.</span> m_View.xform(); <span class="comment">// Logo model.</span> m_Model.draw(); <span class="comment">// Swap buffers.</span> <span class="keywordflow">if</span> (gldrawable->is_double_buffered()) gldrawable->swap_buffers(); <span class="keywordflow">else</span> glFlush(); gldrawable->gl_end(); <span class="comment">// *** OpenGL END ***</span> <span class="keywordflow">return</span> <span class="keyword">true</span>; } <span class="keywordtype">bool</span> Scene::on_button_press_event(GdkEventButton* event) { <span class="keywordflow">if</span> (event->button == 3) { m_Menu->popup(event->button, event->time); <span class="keywordflow">return</span> <span class="keyword">true</span>; } <span class="comment">// don't block</span> <span class="keywordflow">return</span> <span class="keyword">false</span>; } <span class="keywordtype">bool</span> Scene::on_map_event(GdkEventAny* event) { <span class="keywordflow">if</span> (m_Model.anim_is_enabled()) timeout_add(); <span class="keywordflow">return</span> <span class="keyword">true</span>; } <span class="keywordtype">bool</span> Scene::on_unmap_event(GdkEventAny* event) { timeout_remove(); <span class="keywordflow">return</span> <span class="keyword">true</span>; } <span class="keywordtype">bool</span> Scene::on_visibility_notify_event(GdkEventVisibility* event) { <span class="keywordflow">if</span> (m_Model.anim_is_enabled()) { <span class="keywordflow">if</span> (event->state == GDK_VISIBILITY_FULLY_OBSCURED) timeout_remove(); <span class="keywordflow">else</span> timeout_add(); } <span class="keywordflow">return</span> <span class="keyword">true</span>; } <span class="keywordtype">bool</span> Scene::on_timeout() { <span class="comment">// Invalidate whole window.</span> invalidate(); <span class="comment">// Update window synchronously (fast).</span> update(); <span class="keywordflow">return</span> <span class="keyword">true</span>; } <span class="keywordtype">void</span> Scene::timeout_add() { <span class="keywordflow">if</span> (!m_ConnectionTimeout.connected()) m_ConnectionTimeout = Glib::signal_timeout().connect( sigc::mem_fun(*<span class="keyword">this</span>, &Scene::on_timeout), TIMEOUT_INTERVAL); } <span class="keywordtype">void</span> Scene::timeout_remove() { <span class="keywordflow">if</span> (m_ConnectionTimeout.connected()) m_ConnectionTimeout.disconnect(); } <span class="keywordtype">void</span> Scene::toggle_anim() { <span class="keywordflow">if</span> (m_Model.anim_is_enabled()) { m_Model.disable_anim(); timeout_remove(); } <span class="keywordflow">else</span> { m_Model.enable_anim(); timeout_add(); } } <span class="keywordtype">void</span> Scene::init_anim() { m_View.reset(); m_Model.reset_anim(); invalidate(); } Gtk::Menu* Scene::create_popup_menu() { Gtk::Menu* menu = Gtk::manage(<span class="keyword">new</span> Gtk::Menu()); Gtk::Menu::MenuList& menu_list = menu->items(); <span class="comment">// Toggle animation</span> menu_list.push_back(Gtk::Menu_Helpers::MenuElem(<span class="stringliteral">"Toggle Animation"</span>, sigc::mem_fun(*<span class="keyword">this</span>, &Scene::toggle_anim))); <span class="comment">// Init orientation</span> menu_list.push_back(Gtk::Menu_Helpers::MenuElem(<span class="stringliteral">"Initialize"</span>, sigc::mem_fun(*<span class="keyword">this</span>, &Scene::init_anim))); <span class="comment">// Quit</span> menu_list.push_back(Gtk::Menu_Helpers::MenuElem(<span class="stringliteral">"Quit"</span>, sigc::ptr_fun(&Gtk::Main::quit))); <span class="keywordflow">return</span> menu; } <span class="comment">//</span> <span class="comment">// Application class implementation.</span> <span class="comment">//</span> <span class="keyword">const</span> Glib::ustring Application::APP_NAME = <span class="stringliteral">"Logo"</span>; Application::Application(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rot_count, <span class="keywordtype">bool</span> enable_anim) : m_VBox(false, 0), m_Scene(rot_count, enable_anim), m_ButtonQuit(<span class="stringliteral">"Quit"</span>) { <span class="comment">//</span> <span class="comment">// Top-level window.</span> <span class="comment">//</span> set_title(APP_NAME); <span class="comment">// Get automatically redrawn if any of their children changed allocation.</span> set_reallocate_redraws(<span class="keyword">true</span>); add(m_VBox); <span class="comment">//</span> <span class="comment">// Application scene.</span> <span class="comment">//</span> m_Scene.set_size_request(300, 300); m_VBox.pack_start(m_Scene); <span class="comment">//</span> <span class="comment">// Simple quit button.</span> <span class="comment">//</span> m_ButtonQuit.signal_clicked().connect( sigc::mem_fun(*<span class="keyword">this</span>, &Application::on_button_quit_clicked)); m_VBox.pack_start(m_ButtonQuit, Gtk::PACK_SHRINK, 0); <span class="comment">//</span> <span class="comment">// Show window.</span> <span class="comment">//</span> show_all(); } Application::~Application() { } <span class="keywordtype">void</span> Application::on_button_quit_clicked() { Gtk::Main::quit(); } <span class="keywordtype">bool</span> Application::on_key_press_event(GdkEventKey* event) { <span class="keywordflow">switch</span> (event->keyval) { <span class="keywordflow">case</span> GDK_a: m_Scene.toggle_anim(); <span class="keywordflow">break</span>; <span class="keywordflow">case</span> GDK_i: m_Scene.init_anim(); <span class="keywordflow">break</span>; <span class="keywordflow">case</span> GDK_Escape: Gtk::Main::quit(); <span class="keywordflow">break</span>; <span class="keywordflow">default</span>: <span class="keywordflow">return</span> <span class="keyword">true</span>; } m_Scene.invalidate(); <span class="keywordflow">return</span> <span class="keyword">true</span>; } } <span class="comment">// namespace Logo</span> <span class="comment">//</span> <span class="comment">// Main.</span> <span class="comment">//</span> <span class="comment"></span> <span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>** argv) { Gtk::Main kit(argc, argv); <span class="comment">//</span> <span class="comment">// Init gtkglextmm.</span> <span class="comment">//</span> <a name="a67"></a><a class="code" href="namespaceGtk_1_1GL.html#a2">Gtk::GL::init</a>(argc, argv); <span class="comment">//</span> <span class="comment">// Parse arguments.</span> <span class="comment">//</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rot_count = Logo::Model::DEFAULT_ROT_COUNT; <span class="keywordtype">bool</span> enable_anim = <span class="keyword">true</span>; <span class="keywordtype">bool</span> arg_count = <span class="keyword">false</span>; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i < argc; ++i) { <span class="keywordflow">if</span> (arg_count) rot_count = std::atoi(argv[i]); <span class="keywordflow">if</span> (std::strcmp(argv[i], <span class="stringliteral">"--help"</span>) == 0 || std::strcmp(argv[i], <span class="stringliteral">"-h"</span>) == 0) { std::cerr << <span class="stringliteral">"Usage: "</span> << argv[0] << <span class="stringliteral">" [-count num] [-noanim] [--help]\n"</span>; std::exit(0); } <span class="keywordflow">if</span> (std::strcmp(argv[i], <span class="stringliteral">"-count"</span>) == 0) arg_count = <span class="keyword">true</span>; <span class="keywordflow">if</span> (std::strcmp(argv[i], <span class="stringliteral">"-noanim"</span>) == 0) enable_anim = <span class="keyword">false</span>; } <span class="comment">//</span> <span class="comment">// Query OpenGL extension version.</span> <span class="comment">//</span> <span class="keywordtype">int</span> major, minor; <a name="a68"></a><a class="code" href="namespaceGdk_1_1GL.html#a116">Gdk::GL::query_version</a>(major, minor); std::cout << <span class="stringliteral">"OpenGL extension version - "</span> << major << <span class="stringliteral">"."</span> << minor << std::endl; <span class="comment">//</span> <span class="comment">// Instantiate and run the application.</span> <span class="comment">//</span> Logo::Application application(rot_count, enable_anim); kit.run(application); <span class="keywordflow">return</span> 0; } </pre></div> <hr size="1"><address style="align: right;"><small>Generated on Mon Feb 27 18:46:52 2006 for gtkglextmm by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.4 </small></address> </body> </html>