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