296 lines
7.0 KiB
C
296 lines
7.0 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 3.5
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*
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* The MIT License
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/*
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* Linux Magazine July 2001
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* Conversion to UGL/Mesa from GLUT by Stephane Raimbault, 2001
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <math.h>
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#include <ugl/ugl.h>
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#include <ugl/uglevent.h>
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#include <ugl/uglinput.h>
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#include <ugl/uglucode.h>
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#include <GL/uglmesa.h>
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#include <GL/glu.h>
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/* Need GLUT_SHAPES */
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#include <GL/uglglutshapes.h>
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#ifndef PI
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#define PI 3.14159265
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#endif
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UGL_LOCAL UGL_EVENT_SERVICE_ID eventServiceId;
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UGL_LOCAL UGL_EVENT_Q_ID qId;
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UGL_LOCAL UGL_MESA_CONTEXT umc;
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UGL_LOCAL volatile UGL_BOOL stopWex;
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UGL_LOCAL GLint angle;
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UGL_LOCAL GLfloat Sin[360], Cos[360];
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UGL_LOCAL GLfloat L0pos[]={0.0, 2.0, -1.0};
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UGL_LOCAL GLfloat L0dif[]={0.3, 0.3, 0.8};
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UGL_LOCAL GLfloat L1pos[]={2.0, 2.0, 2.0};
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UGL_LOCAL GLfloat L1dif[]={0.5, 0.5, 0.5};
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UGL_LOCAL GLfloat Mspec[3];
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UGL_LOCAL GLfloat Mshiny;
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UGL_LOCAL GLuint theTeapot;
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UGL_LOCAL void calcTableCosSin()
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{
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int i;
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for(i=0;i<360;i++) {
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Cos[i] = cos(((float)i)/180.0*PI);
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Sin[i] = sin(((float)i)/180.0*PI);
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}
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}
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UGL_LOCAL void initGL(void)
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{
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glClearColor(0.0, 0.0, 0.0, 0.0);
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glColor3f(1.0, 0.0, 0.0);
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glEnable(GL_DEPTH_TEST);
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glShadeModel(GL_SMOOTH);
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glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0);
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glEnable(GL_LIGHT1);
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glLightfv(GL_LIGHT0, GL_DIFFUSE, L0dif);
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glLightfv(GL_LIGHT0, GL_SPECULAR, L0dif);
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glLightfv(GL_LIGHT1, GL_DIFFUSE, L1dif);
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glLightfv(GL_LIGHT1, GL_SPECULAR, L1dif);
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glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, Mspec);
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glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, Mshiny);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(45.0, 1.0, 0.1, 10.0);
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glMatrixMode(GL_MODELVIEW);
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theTeapot = glGenLists(1);
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glNewList(theTeapot, GL_COMPILE);
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glutSolidTeapot(1.0);
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glEndList();
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}
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UGL_LOCAL void drawGL()
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{
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glLoadIdentity();
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gluLookAt(4.5*Cos[angle], 2.0,4.5*Sin[angle],0.0,0.0,0.0,0.0,
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1.0,0.0);
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glLightfv(GL_LIGHT0, GL_POSITION, L0pos);
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glLightfv(GL_LIGHT1, GL_POSITION, L1pos);
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glCallList(theTeapot);
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glFlush();
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uglMesaSwapBuffers();
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}
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UGL_LOCAL void echoUse(void)
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{
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printf("tTeapot keys:\n");
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printf(" Left Counter clockwise rotation (y-axis)\n");
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printf(" Right Clockwise rotation (y-axis)\n");
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printf(" j Enable/disable Light0\n");
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printf(" k Enable/disable Light1\n");
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printf(" m Add specular\n");
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printf(" l Remove specular\n");
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printf(" o Add shininess\n");
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printf(" p Remove shininess\n");
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printf(" ESC Exit\n");
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}
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UGL_LOCAL void readKey (UGL_WCHAR key)
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{
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switch(key)
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{
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case UGL_UNI_RIGHT_ARROW:
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angle +=2;
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if (angle>= 360)
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angle-=360;
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break;
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case UGL_UNI_LEFT_ARROW:
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angle -=2;
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if (angle<0)
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angle+=360;
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break;
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case 'j':
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glIsEnabled(GL_LIGHT0) ?
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glDisable(GL_LIGHT0) : glEnable(GL_LIGHT0);
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break;
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case 'k':
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glIsEnabled(GL_LIGHT1) ?
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glDisable(GL_LIGHT1) : glEnable(GL_LIGHT1);
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break;
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case 'm':
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Mspec[0]+=0.1;
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if(Mspec[0]>1)
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Mspec[0]=1;
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Mspec[1]+=0.1;
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if(Mspec[1]>1)
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Mspec[1]=1;
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Mspec[2]+=0.1;
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if(Mspec[2]>1)
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Mspec[2]=1;
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glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, Mspec);
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break;
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case 'l':
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Mspec[0]-=0.1;
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if(Mspec[0]>1)
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Mspec[0]=1;
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Mspec[1]-=0.1;
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if(Mspec[1]>1)
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Mspec[1]=1;
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Mspec[2]-=0.1;
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if(Mspec[2]>1)
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Mspec[2]=1;
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glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, Mspec);
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break;
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case 'o':
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Mshiny -= 1;
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if (Mshiny<0)
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Mshiny=0;
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glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, Mshiny);
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break;
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case 'p':
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Mshiny += 1;
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if (Mshiny>128)
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Mshiny=128;
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glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, Mshiny);
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break;
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case UGL_UNI_ESCAPE:
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stopWex = UGL_TRUE;
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break;
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}
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}
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UGL_LOCAL void loopEvent(void)
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{
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UGL_EVENT event;
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UGL_INPUT_EVENT * pInputEvent;
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UGL_FOREVER
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{
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if (uglEventGet (qId, &event, sizeof (event), UGL_NO_WAIT)
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!= UGL_STATUS_Q_EMPTY)
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{
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pInputEvent = (UGL_INPUT_EVENT *)&event;
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if (pInputEvent->header.type == UGL_EVENT_TYPE_KEYBOARD &&
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pInputEvent->modifiers & UGL_KEYBOARD_KEYDOWN)
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readKey(pInputEvent->type.keyboard.key);
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}
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drawGL();
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if (stopWex)
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break;
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}
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}
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void windMLTeapot (UGL_BOOL windMLMode);
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void uglteapot (void)
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{
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taskSpawn ("tTeapot", 210, VX_FP_TASK, 100000, (FUNCPTR)windMLTeapot,
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UGL_FALSE,1,2,3,4,5,6,7,8,9);
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}
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void windMLTeapot (UGL_BOOL windMLMode)
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{
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UGL_INPUT_DEVICE_ID keyboardDevId;
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GLsizei displayWidth, displayHeight;
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GLsizei x, y, w, h;
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angle = 45;
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Mspec[0] = 0.5;
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Mspec[1] = 0.5;
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Mspec[2] = 0.5;
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Mshiny = 50;
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uglInitialize ();
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uglDriverFind (UGL_KEYBOARD_TYPE, 0,
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(UGL_UINT32 *)&keyboardDevId);
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uglDriverFind (UGL_EVENT_SERVICE_TYPE, 0, (UGL_UINT32 *)&eventServiceId);
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qId = uglEventQCreate (eventServiceId, 100);
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/* Double buffering */
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if (windMLMode)
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umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE
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| UGL_MESA_WINDML_EXCLUSIVE, NULL);
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else
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umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE, NULL);
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if (umc == NULL)
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{
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uglDeinitialize ();
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return;
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}
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uglMesaMakeCurrentContext (umc, 0, 0, 1, 1);
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uglMesaGetIntegerv(UGL_MESA_DISPLAY_WIDTH, &displayWidth);
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uglMesaGetIntegerv(UGL_MESA_DISPLAY_HEIGHT, &displayHeight);
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h = (displayHeight*2)/3;
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w = h;
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x = (displayWidth-w)/2;
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y = (displayHeight-h)/2;
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uglMesaMoveToWindow(x, y);
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uglMesaResizeToWindow(w, h);
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calcTableCosSin();
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initGL ();
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echoUse();
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stopWex = UGL_FALSE;
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loopEvent();
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uglEventQDestroy (eventServiceId, qId);
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uglMesaDestroyContext();
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uglDeinitialize ();
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return;
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}
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