# define HACK_INIT init_planet
# define HACK_DRAW draw_planet
# define HACK_RESHAPE reshape_planet
+# define HACK_HANDLE_EVENT planet_handle_event
+# define EVENT_MASK PointerMotionMask
# define planet_opts xlockmore_opts
#define DEFAULTS "*delay: 15000 \n" \
"*showFPS: False \n" \
#define DEF_TEXTURE "True"
#define DEF_STARS "True"
#define DEF_LIGHT "True"
+#define DEF_RESOLUTION "64"
#define DEF_IMAGE "BUILTIN"
#undef countof
static int do_stars;
static int do_light;
static char *which_image;
+static int resolution;
+
static XrmOptionDescRec opts[] = {
{"-rotate", ".glplanet.rotate", XrmoptionNoArg, (caddr_t) "true" },
{"+rotate", ".glplanet.rotate", XrmoptionNoArg, (caddr_t) "false" },
{"-light", ".glplanet.light", XrmoptionNoArg, (caddr_t) "true" },
{"+light", ".glplanet.light", XrmoptionNoArg, (caddr_t) "false" },
{"-image", ".glplanet.image", XrmoptionSepArg, (caddr_t) 0 },
+ {"-resolution", ".glplanet.resolution", XrmoptionSepArg, (caddr_t) 0 },
};
static argtype vars[] = {
{(caddr_t *) &do_stars, "stars", "Stars", DEF_STARS, t_Bool},
{(caddr_t *) &do_light, "light", "Light", DEF_LIGHT, t_Bool},
{(caddr_t *) &which_image, "image", "Image", DEF_IMAGE, t_String},
+ {(caddr_t *) &resolution, "resolution","Resolution", DEF_RESOLUTION, t_Int},
};
ModeSpecOpt planet_opts = {countof(opts), opts, countof(vars), vars, NULL};
#include "../images/earth.xpm"
#include "xpm-ximage.h"
+#include "rotator.h"
+#include "gltrackball.h"
/*-
*/
#define NUM_STARS 1000
-#define SLICES 32
-#define STACKS 32
/* radius of the sphere- fairly arbitrary */
#define RADIUS 4
int screen_width, screen_height;
GLXContext *glx_context;
Window window;
-
XColor fg, bg;
-
- GLfloat tx, ty, tz;
- GLfloat dtx, dty, dtz;
- GLfloat xpos, ypos, zpos;
- GLfloat dx, dy, dz;
- GLfloat box_width, box_height, box_depth;
-
GLfloat sunpos[4];
-
+ double z;
+ rotator *rot;
+ trackball_state *trackball;
+ Bool button_down_p;
} planetstruct;
{
XImage *image = xpm_to_ximage (MI_DISPLAY (mi), MI_VISUAL (mi),
MI_COLORMAP (mi), xpm_data);
+ char buf[1024];
clear_gl_error();
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
image->width, image->height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, image->data);
- check_gl_error("texture");
+ sprintf (buf, "builtin texture (%dx%d)", image->width, image->height);
+ check_gl_error(buf);
/* setup parameters for texturing */
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
{
Display *dpy = mi->dpy;
Visual *visual = mi->xgwa.visual;
+ char buf[1024];
Colormap cmap = mi->xgwa.colormap;
XImage *image = xpm_file_to_ximage (dpy, visual, cmap, filename);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
image->width, image->height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, image->data);
- check_gl_error("texture");
+ sprintf (buf, "texture: %.100s (%dx%d)",
+ filename, image->width, image->height);
+ check_gl_error(buf);
/* setup parameters for texturing */
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
setup_file_texture (mi, which_image);
check_gl_error("texture initialization");
+
+ /* Need to flip the texture top for bottom for some reason. */
+ glMatrixMode (GL_TEXTURE);
+ glScalef (1, -1, 1);
+ glMatrixMode (GL_MODELVIEW);
}
{
planetstruct *gp = &planets[MI_SCREEN(mi)];
- GLfloat lamb[4] = { 0.0, 0.0, 0.0, 1.0 };
+ GLfloat lamb[4] = { 0.1, 0.1, 0.1, 1.0 };
GLfloat ldif[4] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat spec[4] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat mpec[4] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat shiny = .4;
- gp->sunpos[0] = 1.00 - frand(2.00);
- gp->sunpos[1] = 0.25 - frand(0.50);
- gp->sunpos[2] = -1.00;
- gp->sunpos[3] = 0.00;
+ {
+ double h = 0.1 + frand(0.8); /* east-west position - screen-side. */
+ double v = -0.3 + frand(0.6); /* north-south position */
+
+ if (h > 0.3 && h < 0.8) /* avoid having the sun at the camera */
+ h += (h > 0.5 ? 0.2 : -0.2);
+
+ gp->sunpos[0] = cos(h * M_PI);
+ gp->sunpos[1] = sin(h * M_PI);
+ gp->sunpos[2] = sin(v * M_PI);
+ gp->sunpos[3] = 0.00;
+ }
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
static void
pick_velocity (ModeInfo * mi)
{
+#if 0
planetstruct *gp = &planets[MI_SCREEN(mi)];
gp->box_width = 15.0;
gp->dx = (frand(0.2) + frand(0.2)) * RANDSIGN();
gp->dy = (frand(0.2) + frand(0.2)) * RANDSIGN();
gp->dz = (frand(0.2) + frand(0.2)) * RANDSIGN();
-}
-
-
-static void
-rotate_and_move (ModeInfo * mi)
-{
- planetstruct *gp = &planets[MI_SCREEN(mi)];
-
- if (do_roll)
- {
- gp->tx += gp->dtx;
- while (gp->tx < 0) gp->tx += 360;
- while (gp->tx > 360) gp->tx -= 360;
-
- gp->ty += gp->dty;
- while (gp->ty < 0) gp->ty += 360;
- while (gp->ty > 360) gp->ty -= 360;
- }
-
- if (do_rotate)
- {
- gp->tz += gp->dtz;
- while (gp->tz < 0) gp->tz += 360;
- while (gp->tz > 360) gp->tz -= 360;
- }
-
- if (do_wander)
- {
- static int frame = 0;
-# define SINOID(SCALE,SIZE) \
- ((((1 + sin((frame * (SCALE)) / 2 * M_PI)) / 2.0) * (SIZE)) - (SIZE)/2)
- gp->xpos = SINOID(0.031, gp->box_width);
- gp->ypos = SINOID(0.023, gp->box_height);
- gp->zpos = SINOID(0.017, gp->box_depth);
- frame++;
- }
+#endif
}
}
+Bool
+planet_handle_event (ModeInfo *mi, XEvent *event)
+{
+ planetstruct *gp = &planets[MI_SCREEN(mi)];
+
+ if (event->xany.type == ButtonPress &&
+ event->xbutton.button & Button1)
+ {
+ gp->button_down_p = True;
+ gltrackball_start (gp->trackball,
+ event->xbutton.x, event->xbutton.y,
+ MI_WIDTH (mi), MI_HEIGHT (mi));
+ return True;
+ }
+ else if (event->xany.type == ButtonRelease &&
+ event->xbutton.button & Button1)
+ {
+ gp->button_down_p = False;
+ return True;
+ }
+ else if (event->xany.type == MotionNotify &&
+ gp->button_down_p)
+ {
+ gltrackball_track (gp->trackball,
+ event->xmotion.x, event->xmotion.y,
+ MI_WIDTH (mi), MI_HEIGHT (mi));
+ return True;
+ }
+
+ return False;
+}
+
+
void
init_planet (ModeInfo * mi)
{
free (b);
}
+ {
+ double spin_speed = 1.0;
+ double wander_speed = 0.05;
+ gp->rot = make_rotator (do_roll ? spin_speed : 0,
+ do_roll ? spin_speed : 0,
+ 0, 1,
+ do_wander ? wander_speed : 0,
+ True);
+ gp->z = frand (1.0);
+ gp->trackball = gltrackball_init ();
+ }
+
if (wire)
{
do_texture = False;
glColor3f (1,1,1);
glPushMatrix ();
glScalef (RADIUS, RADIUS, RADIUS);
- unit_sphere (STACKS, SLICES, wire);
+ glRotatef (90, 1, 0, 0);
+ unit_sphere (resolution, resolution, wire);
+ mi->polygon_count += resolution*resolution;
+#if 0
+ if (!wire)
+ {
+ glDisable(GL_LIGHTING);
+ glScalef(1.01,1.01,1.01);
+ unit_sphere (12, 24, 1);
+ glEnable(GL_LIGHTING);
+ }
+#endif
glPopMatrix ();
glEndList();
}
planetstruct *gp = &planets[MI_SCREEN(mi)];
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
+ double x, y, z;
if (!gp->glx_context)
return;
draw_stars (mi);
glPushMatrix();
+
+ get_position (gp->rot, &x, &y, &z, !gp->button_down_p);
+ glTranslatef((x - 0.5) * 15,
+ (y - 0.5) * 15,
+ (z - 0.5) * 8);
+
+ gltrackball_rotate (gp->trackball);
+
glRotatef (90,1,0,0);
- glTranslatef (gp->xpos, gp->ypos, gp->zpos);
- glRotatef (gp->tx, 1, 0, 0);
- glRotatef (gp->ty, 0, 1, 0);
- glRotatef (gp->tz, 0, 0, 1);
+ if (do_roll)
+ {
+ get_rotation (gp->rot, &x, &y, 0, !gp->button_down_p);
+ glRotatef (x * 360, 1.0, 0.0, 0.0);
+ glRotatef (y * 360, 0.0, 1.0, 0.0);
+ }
glLightfv (GL_LIGHT0, GL_POSITION, gp->sunpos);
+ glRotatef (gp->z * 360, 0.0, 0.0, 1.0);
+ if (do_rotate && !gp->button_down_p)
+ {
+ gp->z += 0.01;
+ if (gp->z > 1) gp->z -= 1;
+ }
+
glCallList (gp->platelist);
glPopMatrix();
if (mi->fps_p) do_fps (mi);
glFinish();
glXSwapBuffers(display, window);
-
- rotate_and_move (mi);
}
projects / xscreensaver / blobdiff