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Diffstat (limited to 'progs/windml/uglline.c')
| -rw-r--r-- | progs/windml/uglline.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/progs/windml/uglline.c b/progs/windml/uglline.c new file mode 100644 index 00000000000..e58f071ea4b --- /dev/null +++ b/progs/windml/uglline.c @@ -0,0 +1,274 @@ + +/* uglline.c - WindML/Mesa example program */ + +/* + * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc. + * + * Permission to use, copy, modify, distribute, and sell this software and + * its documentation for any purpose is hereby granted without fee, provided + * that (i) the above copyright notices and this permission notice appear in + * all copies of the software and related documentation, and (ii) the name of + * Silicon Graphics may not be used in any advertising or + * publicity relating to the software without the specific, prior written + * permission of Silicon Graphics. + * + * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF + * ANY KIND, + * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY + * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. + * + * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR + * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, + * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, + * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF + * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +/* +modification history +-------------------- +01a,jun01,sra Ported to UGL/Mesa and modifications +*/ + +/* +DESCRIPTION +Draw circular lines +*/ + +#include <stdio.h> +#include <math.h> + +#include <ugl/ugl.h> +#include <ugl/uglucode.h> +#include <ugl/uglevent.h> +#include <ugl/uglinput.h> + +#include <GL/uglmesa.h> +#include <GL/glu.h> + +#define BLACK (0) +#define YELLOW (1) +#define GREEN (2) +#define BLUE (3) +#define CI_OFFSET 4 + +UGL_LOCAL GLuint rgb; +UGL_LOCAL UGL_EVENT_SERVICE_ID eventServiceId; +UGL_LOCAL UGL_EVENT_Q_ID qId; +UGL_LOCAL volatile UGL_BOOL stopWex; +UGL_LOCAL UGL_MESA_CONTEXT umc; + +UGL_LOCAL GLboolean mode1, mode2; +UGL_LOCAL GLint size; + +UGL_LOCAL GLfloat pntA[3] = { + -10.0, 0.0, 0.0 +}; +UGL_LOCAL GLfloat pntB[3] = { + -5.0, 0.0, 0.0 +}; + +UGL_LOCAL GLint angleA; + +UGL_LOCAL void initGL (void) + { + GLint i; + + uglMesaSetColor(BLACK, 0.0, 0.0, 0.0); + uglMesaSetColor(YELLOW, 1.0, 1.0, 0.0); + uglMesaSetColor(GREEN, 0.0, 1.0, 0.0); + uglMesaSetColor(BLUE, 0.0, 0.0, 1.0); + + for (i = 0; i < 16; i++) + { + uglMesaSetColor(CI_OFFSET+i, i/15.0, i/15.0, 0.0); + } + + glClearColor(0.0, 0.0, 0.0, 0.0); + glClearIndex(BLACK); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(-10, 10, -10, 10, -10.0, 10.0); + + glMatrixMode(GL_MODELVIEW); + + glLineStipple(1, 0xF0E0); + glBlendFunc(GL_SRC_ALPHA, GL_ONE); + + mode1 = GL_FALSE; + mode2 = GL_FALSE; + size = 1; + } + +UGL_LOCAL void drawGL (void) + { + + GLint ci, i; + + glClear(GL_COLOR_BUFFER_BIT); + + glLineWidth(size); + + if (mode1) { + glEnable(GL_LINE_STIPPLE); + } else { + glDisable(GL_LINE_STIPPLE); + } + + if (mode2) { + ci = CI_OFFSET; + glEnable(GL_LINE_SMOOTH); + glEnable(GL_BLEND); + } else { + ci = YELLOW; + glDisable(GL_LINE_SMOOTH); + glDisable(GL_BLEND); + } + + glPushMatrix(); + + glRotatef(angleA, 1, 0, 1); + angleA = angleA++ % 360; + + for (i = 0; i < 360; i += 5) { + glRotatef(5.0, 0, 0, 1); + + glColor3f(1.0, 1.0, 0.0); + glBegin(GL_LINE_STRIP); + glVertex3fv(pntA); + glVertex3fv(pntB); + glEnd(); + + glPointSize(1); + + glColor3f(0.0, 1.0, 0.0); + glBegin(GL_POINTS); + glVertex3fv(pntA); + glVertex3fv(pntB); + glEnd(); + } + + glPopMatrix(); + + glFlush(); + + uglMesaSwapBuffers(); + + } + +UGL_LOCAL void echoUse(void) + { + printf("tLine keys:\n"); + printf(" b Blending/antialiasing\n"); + printf(" n Line stipple\n"); + printf(" Up/Down Pixel size\n"); + printf(" ESC Exit\n"); + } + +UGL_LOCAL void readKey (UGL_WCHAR key) + { + switch(key) + { + case 'n': + mode1 = (mode1) ? GL_FALSE: GL_TRUE; + break; + case 'b': + mode2 = (mode2) ? GL_FALSE: GL_TRUE; + break; + case UGL_UNI_DOWN_ARROW: + if(size>0) + size--; + break; + case UGL_UNI_UP_ARROW: + size++; + 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 windMLLine (UGL_BOOL windMLMode); + +void uglline (void) + { + taskSpawn("tLine", 210, VX_FP_TASK, 100000, (FUNCPTR)windMLLine, + UGL_FALSE,1,2,3,4,5,6,7,8,9); + } + + +void windMLLine(UGL_BOOL windMLMode) + { + + UGL_INPUT_DEVICE_ID keyboardDevId; + + angleA = 0; + + uglInitialize(); + + uglDriverFind (UGL_KEYBOARD_TYPE, 0, (UGL_UINT32 *)&keyboardDevId); + + uglDriverFind (UGL_EVENT_SERVICE_TYPE, 0, (UGL_UINT32 *)&eventServiceId); + + qId = uglEventQCreate (eventServiceId, 100); + + /* Double buffer */ + + if (windMLMode) + umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE + | UGL_MESA_WINDML_EXCLUSIVE, NULL); + else + umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE, NULL); + + if (umc == NULL) + { + uglDeinitialize(); + return; + } + + /* Fullscreen */ + + uglMesaMakeCurrentContext(umc, 0, 0, UGL_MESA_FULLSCREEN_WIDTH, + UGL_MESA_FULLSCREEN_HEIGHT); + + uglMesaGetIntegerv(UGL_MESA_RGB, &rgb); + + initGL(); + + echoUse(); + + stopWex = UGL_FALSE; + loopEvent(); + + uglEventQDestroy(eventServiceId, qId); + + uglMesaDestroyContext(); + uglDeinitialize(); + + return; + } |