/** * $Id: TST_gears.c 28254 2010-04-18 10:28:37Z campbellbarton $ * * ***** BEGIN GPL LICENSE BLOCK ***** * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. * All rights reserved. * * The Original Code is: all of this file. * * Contributor(s): none yet. * * ***** END GPL LICENSE BLOCK ***** * The ubiquitous gears, threaded as test for the plugin frame. */ /* * 3-D gear wheels. This program is in the public domain. * * Command line options: * -info print GL implementation information * * * Brian Paul */ /* Conversion to GLUT by Mark J. Kilgard */ /* * $Log$ * Revision 1.5 2007/04/04 13:18:38 campbellbarton * moved source and text to american spelling * * colour -> color * * centre -> center * * normalise -> normalize * * modelling -> modeling * * Revision 1.4 2004/03/22 22:01:49 jesterking * [GameEngine] Commit all Kester's changes made to the gameengine to restore 2.25 like physics. * [SCons] Build with Solid as default when enabling the gameengine in the build process * [SCons] Build solid and qhull from the extern directory and link statically against them * * That was about it. * * There are a few things that needs double checking: * * * Makefiles * * Projectfiles * * All the other systems than Linux and Windows on which the build (with scons) has been successfully tested. * * Revision 1.1.1.1 2003/08/10 20:22:32 desaster * Import of Blender/cvs 2003/08/10 * * Revision 1.3 2002/11/25 12:02:14 mein * * * updated .c files to include: * * Just need to finish cpp files now :) * * Kent * -- * mein@cs.umn.edu * * Revision 1.2 2002/10/13 15:57:16 hans * - mention the GPL the right way * - extend NaN Holding copyright to its proper startup * * Revision 1.1.1.1 2002/10/12 11:37:45 hans * For the open source Blender project we start with this fresh repository. * These are the NaN 2.25 Blender sources, slightly cleaned up, and stripped * from parts that could not be open sourced. Enjoy! * * Revision 1.4 2002/01/04 17:02:55 nzc * - Removed double mutex unlock from plain color drawing func. * - Renamed functions to better reflect the grouping. See comments in * UnixShell.c for details. * * Revision 1.3 2001/12/07 10:49:41 nzc * - Switched mime type to application/x-blender-plugin, which is the same as the * windows plugin. * - Concentrated drawing in the game engine in a more compact chunk. You can * now skip drawing for a certain frame easily. Audio is also wrapped in * that chunk. Janco: maybe separate loop for the audioo scenes? * - Adapted plugin-application interface to match use by Blender canvases. * - Adapted canvas to support error reporting on acquiring canvases. * - Adapted tests to run with the new apis. * * Revision 1.2 2001/12/03 12:21:06 nzc * - Added threading to the gears test. Works on FreeBSD and Linux :) * * Revision 1.1 2001/11/29 13:39:51 nzc * - Added more x fixes. * - Split up the tests into distinct parts. * - Use make ptest to make a gears plugin test on linux or freebsd. * - Works on Linux and FreeBSD now :) * * Revision 1.5 2001/11/23 15:24:42 nzc * - Ironed out a dozen little details for X/glX. * - Added more tracing hooks. * * Revision 1.4 2001/11/23 12:41:31 nzc * - Changed stupid common and unix lib names to plugin_common and * plugin_common_unix. * - Abstracted plugin to application wrapper. * - Adapted test to comply to wrapper interface. * * Revision 1.3 2001/11/21 18:20:26 nzc * - Applied some ifdef's to tracing code for ease of use. * - Removed some unnecessary/unused variables and code. * * Revision 1.2 2001/11/21 13:33:22 nzc * - Some cleanup of comments, includes and headers. * - Added first part of X to KX event conversion. * * Revision 1.1 2001/11/20 13:08:23 nzc * - Added new ns plugin frame. This one has a gears-test. * * Revision 1.2 1999/10/21 16:39:06 brianp * added -info command line option * * Revision 1.1.1.1 1999/08/19 00:55:40 jtg * Imported sources * * Revision 3.2 1999/06/03 17:07:36 brianp * an extra quad was being drawn in front and back faces * * Revision 3.1 1998/11/03 02:49:10 brianp * added fps output * * Revision 3.0 1998/02/14 18:42:29 brianp * initial rev * */ #include #include #include #include #include #include #include #include "NZC_application_hooks.h" #include "NZC_application_callback.h" #ifndef M_PI #define M_PI 3.14159265 #endif /* if defined: generate a log file */ /* #define NZC_GENERATE_LOG */ typedef struct _gears_data { int terminate; GLfloat pos[4]; GLfloat red[4]; GLfloat green[4]; GLfloat blue[4]; GLint Frames; GLfloat view_rotx, view_roty, view_rotz; GLint gear1, gear2, gear3; GLfloat angle; PLA_plugin_handle plugin; } gears_data; /** Draw a set of gears. */ void gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width, GLint teeth, GLfloat tooth_depth); /** Make progress */ void TST_proceed(APH_application_handle handle); /** Add an entry to the log. */ static void TST_log_entry(char* msg); /** Draw a gear wheel. You'll probably want to call this function when building a display list since we do a lot of trig here. Input: inner_radius - radius of hole at center outer_radius - radius at center of teeth width - width of gear teeth - number of teeth tooth_depth - depth of tooth **/ void gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width, GLint teeth, GLfloat tooth_depth) { GLint i; GLfloat r0, r1, r2; GLfloat angle, da; GLfloat u, v, len; TST_log_entry("gear"); r0 = inner_radius; r1 = outer_radius - tooth_depth / 2.0; r2 = outer_radius + tooth_depth / 2.0; da = 2.0 * M_PI / teeth / 4.0; glShadeModel(GL_FLAT); glNormal3f(0.0, 0.0, 1.0); /* draw front face */ glBegin(GL_QUAD_STRIP); for (i = 0; i <= teeth; i++) { angle = i * 2.0 * M_PI / teeth; glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5); glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5); if (i < teeth) { glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5); glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), width * 0.5); } } glEnd(); /* draw front sides of teeth */ glBegin(GL_QUADS); da = 2.0 * M_PI / teeth / 4.0; for (i = 0; i < teeth; i++) { angle = i * 2.0 * M_PI / teeth; glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5); glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5); glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), width * 0.5); glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), width * 0.5); } glEnd(); glNormal3f(0.0, 0.0, -1.0); /* draw back face */ glBegin(GL_QUAD_STRIP); for (i = 0; i <= teeth; i++) { angle = i * 2.0 * M_PI / teeth; glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5); glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5); if (i < teeth) { glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), -width * 0.5); glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5); } } glEnd(); /* draw back sides of teeth */ glBegin(GL_QUADS); da = 2.0 * M_PI / teeth / 4.0; for (i = 0; i < teeth; i++) { angle = i * 2.0 * M_PI / teeth; glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), -width * 0.5); glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), -width * 0.5); glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5); glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5); } glEnd(); /* draw outward faces of teeth */ glBegin(GL_QUAD_STRIP); for (i = 0; i < teeth; i++) { angle = i * 2.0 * M_PI / teeth; glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5); glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5); u = r2 * cos(angle + da) - r1 * cos(angle); v = r2 * sin(angle + da) - r1 * sin(angle); len = sqrt(u * u + v * v); u /= len; v /= len; glNormal3f(v, -u, 0.0); glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5); glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5); glNormal3f(cos(angle), sin(angle), 0.0); glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), width * 0.5); glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), -width * 0.5); u = r1 * cos(angle + 3 * da) - r2 * cos(angle + 2 * da); v = r1 * sin(angle + 3 * da) - r2 * sin(angle + 2 * da); glNormal3f(v, -u, 0.0); glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), width * 0.5); glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), -width * 0.5); glNormal3f(cos(angle), sin(angle), 0.0); } glVertex3f(r1 * cos(0), r1 * sin(0), width * 0.5); glVertex3f(r1 * cos(0), r1 * sin(0), -width * 0.5); glEnd(); glShadeModel(GL_SMOOTH); /* draw inside radius cylinder */ glBegin(GL_QUAD_STRIP); for (i = 0; i <= teeth; i++) { angle = i * 2.0 * M_PI / teeth; glNormal3f(-cos(angle), -sin(angle), 0.0); glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5); glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5); } glEnd(); } void APH_redraw(APH_application_handle handle) { gears_data* h = (gears_data*) handle; TST_log_entry("NZC_redraw"); if (!PLA_acquire_glx_context(h->plugin)) return; glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushMatrix(); glRotatef(h->view_rotx, 1.0, 0.0, 0.0); glRotatef(h->view_roty, 0.0, 1.0, 0.0); glRotatef(h->view_rotz, 0.0, 0.0, 1.0); glPushMatrix(); glTranslatef(-3.0, -2.0, 0.0); glRotatef(h->angle, 0.0, 0.0, 1.0); glCallList(h->gear1); glPopMatrix(); glPushMatrix(); glTranslatef(3.1, -2.0, 0.0); glRotatef(-2.0 * h->angle - 9.0, 0.0, 0.0, 1.0); glCallList(h->gear2); glPopMatrix(); glPushMatrix(); glTranslatef(-3.1, 4.2, 0.0); glRotatef(-2.0 * h->angle - 25.0, 0.0, 0.0, 1.0); glCallList(h->gear3); glPopMatrix(); glPopMatrix(); h->Frames++; PLA_swap_and_release_glx_context(h->plugin); } void TST_proceed(APH_application_handle handle) { gears_data* h = (gears_data*) handle; TST_log_entry("TST_proceed"); h->angle += 2.0; APH_redraw(handle); } /** Accept an X key release event */ void APH_keyboard_release(APH_application_handle handle, KeySym key) { gears_data* h = (gears_data*) handle; TST_log_entry("NZC_keyboard_release"); h->angle += 2.0; APH_redraw(handle); } /** Accept an X mousebutton press event */ void APH_mousekey_press(APH_application_handle handle, int xbut) { gears_data* h = (gears_data*) handle; TST_log_entry("NZC_mousekey_press"); h->angle += 2.0; APH_redraw(handle); } /** Accept an X mousebutton release event */ void APH_mousekey_release(APH_application_handle handle, int xbut) { gears_data* h = (gears_data*) handle; TST_log_entry("NZC_mousekey_release"); h->angle += 2.0; APH_redraw(handle); } /** Accept an X mouse movement event */ void APH_mouse_movement(APH_application_handle handle, int x, int y) { gears_data* h = (gears_data*) handle; TST_log_entry("NZC_mouse_movement"); h->angle += 2.0; APH_redraw(handle); } void APH_keyboard_press(APH_application_handle handle, KeySym key) { gears_data* h = (gears_data*) handle; TST_log_entry("NZC_keyboard_press"); switch (key) { case XK_Up: h->view_rotx += 5.0; break; case XK_Down: h->view_rotx -= 5.0; break; case XK_Left: h->view_roty += 5.0; break; case XK_Right: h->view_roty -= 5.0; break; case XK_z: h->view_rotz += 5.0; break; case XK_Z: h->view_rotz -= 5.0; break; case XK_Escape: h->terminate = 1; break; default: return; } TST_proceed(handle); APH_redraw(handle); } /* new context: do inits */ void APH_reset_viewport(APH_application_handle handle, int width, int height) { GLfloat h = (GLfloat) height / (GLfloat) width; gears_data* gd = (gears_data*) handle; TST_log_entry("NZC_set_viewport"); PLA_acquire_glx_context(gd->plugin); glViewport(0, 0, (GLint) width, (GLint) height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glFrustum(-1.0, 1.0, -h, h, 5.0, 60.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glTranslatef(0.0, 0.0, -40.0); // redo the displaylists glLightfv(GL_LIGHT0, GL_POSITION, gd->pos); glEnable(GL_CULL_FACE); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glEnable(GL_DEPTH_TEST); /* make the gears */ gd->gear1 = glGenLists(1); glNewList(gd->gear1, GL_COMPILE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, gd->red); gear(1.0, 4.0, 1.0, 20, 0.7); glEndList(); gd->gear2 = glGenLists(1); glNewList(gd->gear2, GL_COMPILE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, gd->green); gear(0.5, 2.0, 2.0, 10, 0.7); glEndList(); gd->gear3 = glGenLists(1); glNewList(gd->gear3, GL_COMPILE); glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, gd->blue); gear(1.3, 2.0, 0.5, 10, 0.7); glEndList(); glEnable(GL_NORMALIZE); PLA_release_glx_context(gd->plugin); } APH_application_handle APH_create_application(PLA_plugin_handle p_handle) { gears_data* gd = NULL; TST_log_entry("NZC_create_application"); gd = malloc(sizeof(gears_data)); if (!gd) return NULL; gd->terminate = 0; gd->plugin = p_handle; gd->Frames = 0; gd->view_rotx = 20.0; gd->view_roty = 30.0; gd->view_rotz = 0.0; gd->angle = 0.0; gd->pos[0] = 5.0; gd->pos[1] = 5.0; gd->pos[2] = 10.0; gd->pos[3] = 0.0; gd->red[0] = 0.8; gd->red[1] = 0.1; gd->red[2] = 0.0; gd->red[3] = 1.0; gd->green[0] = 0.0; gd->green[1] = 0.8; gd->green[2] = 0.2; gd->green[3] = 1.0; gd->blue[0] = 0.2; gd->blue[1] = 0.2; gd->blue[2] = 1.0; gd->blue[3] = 1.0; return (APH_application_handle) gd; } void APH_terminate_application(APH_application_handle handle) { gears_data* h = (gears_data*) handle; TST_log_entry("NZC_terminate_application"); free(h); } static void TST_log_entry(char* msg) { #ifdef NZC_GENERATE_LOG FILE* fp = fopen("plugin_log","a"); if (!fp) return; fprintf(fp, "--> TST_gears::%s\n", msg); fflush(fp); fclose (fp); #endif }