-/* -*- Mode: C; tab-width: 4 -*-
- * gears.c --- 3D gear wheels
- */
+/* -*- Mode: C; tab-width: 4 -*- */
+/* gears --- 3D gear wheels */
+
#if !defined( lint ) && !defined( SABER )
-static const char sccsid[] = "@(#)gears.c 4.02 97/04/01 xlockmore";
+static const char sccsid[] = "@(#)gears.c 4.07 97/11/24 xlockmore";
+
#endif
-/* Permission to use, copy, modify, and distribute this software and its
+
+/*-
+ * Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* other special, indirect and consequential damages.
*
* Revision History:
+ * 10-May-97: Compatible with xscreensaver
* 22-Mar-97: Added support for -mono mode, and monochrome X servers.
- * Ed Mackey, emackey@early.com
+ * Ed Mackey, emackey@netaxs.com
* 13-Mar-97: Memory leak fix by Tom Schmidt <tschmidt@micron.com>
* 1996: "written" by Danny Sung <dannys@ucla.edu>
* Based on 3-D gear wheels by Brian Paul which is in the public domain.
ModeSpecOpt gears_opts = {
0, NULL, 0, NULL, NULL };
+#ifdef USE_MODULES
+ModStruct gears_description =
+{"gears", "init_gears", "draw_gears", "release_gears",
+ "draw_gears", "init_gears", NULL, &gears_opts,
+ 1000, 1, 2, 1, 1.0, "",
+ "Shows GL's gears", 0, NULL};
+
+#endif
+
typedef struct {
GLfloat view_rotx, view_roty, view_rotz;
GLuint gear1, gear2, gear3;
GLfloat angle;
- int mono;
- GLXContext glx_context;
+ GLXContext *glx_context;
+ Window window;
#if 0
Window win;
#endif
static gearsstruct *gears = NULL;
-/*
+/*-
* 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.
*
draw(ModeInfo * mi)
{
gearsstruct *gp = &gears[MI_SCREEN(mi)];
- int wire = MI_WIN_IS_WIREFRAME(mi) || gp->mono;
+ int wire = MI_WIN_IS_WIREFRAME(mi);
if (!wire) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
{0.0, 0.8, 0.2, 1.0};
static GLfloat blue[4] =
{0.2, 0.2, 1.0, 1.0};
- int wire = MI_WIN_IS_WIREFRAME(mi) || gp->mono;
+ static GLfloat gray[4] =
+ {0.5, 0.5, 0.5, 1.0};
+ static GLfloat white[4] =
+ {1.0, 1.0, 1.0, 1.0};
+ int wire = MI_WIN_IS_WIREFRAME(mi);
+ int mono = MI_WIN_IS_MONO(mi);
if (!wire) {
glLightfv(GL_LIGHT0, GL_POSITION, pos);
/* make the gears */
gp->gear1 = glGenLists(1);
glNewList(gp->gear1, GL_COMPILE);
- if (!wire)
- glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
- else
- glColor4fv(red);
+ if (wire) {
+ if (mono)
+ glColor4fv(white);
+ else
+ glColor4fv(red);
+ } else {
+ if (mono)
+ glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, gray);
+ else
+ glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
+ }
gear(1.0, 4.0, 1.0, 20, 0.7, wire);
glEndList();
gp->gear2 = glGenLists(1);
glNewList(gp->gear2, GL_COMPILE);
- if (!wire)
- glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
- else
- glColor4fv(green);
+ if (wire) {
+ if (mono)
+ glColor4fv(white);
+ else
+ glColor4fv(green);
+ } else {
+ if (mono)
+ glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, gray);
+ else
+ glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
+ }
gear(0.5, 2.0, 2.0, 10, 0.7, wire);
glEndList();
gp->gear3 = glGenLists(1);
glNewList(gp->gear3, GL_COMPILE);
- if (!wire)
- glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
- else
- glColor4fv(blue);
+ if (wire) {
+ if (mono)
+ glColor4fv(white);
+ else
+ glColor4fv(blue);
+ } else {
+ if (mono)
+ glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, gray);
+ else
+ glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
+ }
gear(1.3, 2.0, 0.5, 10, 0.7, wire);
glEndList();
if (!wire)
void
init_gears(ModeInfo * mi)
{
-#if 0
- Display *display = MI_DISPLAY(mi);
- Window window = MI_WINDOW(mi);
-
-#endif
int screen = MI_SCREEN(mi);
/*Colormap cmap; */
}
gp = &gears[screen];
-#if 0
- gp->win = window;
-#endif
+ gp->window = MI_WINDOW(mi);
gp->view_rotx = NRAND(360);
gp->view_roty = NRAND(360);
gp->view_rotz = NRAND(360);
gp->angle = NRAND(360);
- gp->mono = (MI_WIN_IS_MONO(mi) ? 1 : 0);
- gp->glx_context = init_GL(mi);
-
- reshape(MI_WIN_WIDTH(mi), MI_WIN_HEIGHT(mi));
- pinit(mi);
+ if ((gp->glx_context = init_GL(mi)) != NULL) {
+ reshape(MI_WIN_WIDTH(mi), MI_WIN_HEIGHT(mi));
+ pinit(mi);
+ } else {
+ MI_CLEARWINDOW(mi);
+ }
}
void
int angle_incr = MI_CYCLES(mi) ? MI_CYCLES(mi) : 2;
int rot_incr = MI_BATCHCOUNT(mi) ? MI_BATCHCOUNT(mi) : 1;
+ if (!gp->glx_context)
+ return;
+
glDrawBuffer(GL_BACK);
- glXMakeCurrent(display, window, gp->glx_context);
+ glXMakeCurrent(display, window, *(gp->glx_context));
draw(mi);
/* let's do something so we don't get bored */
for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++) {
gearsstruct *gp = &gears[screen];
- /* Display lists MUST be freed while their glXContext is current. */
- glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), gp->glx_context);
-
- if (glIsList(gp->gear1))
- glDeleteLists(gp->gear1, 1);
- if (glIsList(gp->gear2))
- glDeleteLists(gp->gear2, 1);
- if (glIsList(gp->gear3))
- glDeleteLists(gp->gear3, 1);
+ if (gp->glx_context) {
+ /* Display lists MUST be freed while their glXContext is current. */
+ glXMakeCurrent(MI_DISPLAY(mi), gp->window, *(gp->glx_context));
- /* Don't destroy the glXContext. init_GL does that. */
+ if (glIsList(gp->gear1))
+ glDeleteLists(gp->gear1, 1);
+ if (glIsList(gp->gear2))
+ glDeleteLists(gp->gear2, 1);
+ if (glIsList(gp->gear3))
+ glDeleteLists(gp->gear3, 1);
+ }
}
(void) free((void *) gears);
gears = NULL;
}
+ FreeAllGL(mi);
}
projects / xscreensaver / blobdiff