#define HACK_INIT init_sponge
#define HACK_DRAW draw_sponge
#define HACK_RESHAPE reshape_sponge
+#define HACK_HANDLE_EVENT sponge_handle_event
+#define EVENT_MASK PointerMotionMask
#define sws_opts xlockmore_opts
#define DEF_SPIN "True"
#include "xlockmore.h"
#include "colors.h"
+#include "rotator.h"
+#include "gltrackball.h"
#include <ctype.h>
#ifdef USE_GL /* whole file */
typedef struct {
GLXContext *glx_context;
-
- GLfloat rotx, roty, rotz; /* current object rotation */
- GLfloat dx, dy, dz; /* current rotational velocity */
- GLfloat ddx, ddy, ddz; /* current rotational acceleration */
- GLfloat d_max; /* max velocity */
-
+ rotator *rot;
+ trackball_state *trackball;
+ Bool button_down_p;
GLuint sponge_list0; /* we store X, Y, and Z-facing surfaces */
GLuint sponge_list1; /* in their own lists, to make it easy */
GLuint sponge_list2; /* to color them differently. */
static sponge_configuration *sps = NULL;
-static char *do_spin;
+static Bool do_spin;
static Bool do_wander;
static int speed;
static Bool do_optimize;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
+ gluPerspective (30.0, 1/h, 1.0, 100.0);
- gluPerspective( 30.0, 1/h, 1.0, 100.0 );
- gluLookAt( 0.0, 0.0, 15.0,
- 0.0, 0.0, 0.0,
- 0.0, 1.0, 0.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
- glTranslatef(0.0, 0.0, -15.0);
+ gluLookAt( 0.0, 0.0, 30.0,
+ 0.0, 0.0, 0.0,
+ 0.0, 1.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
}
-/* lifted from lament.c */
-#define RAND(n) ((long) ((random() & 0x7fffffff) % ((long) (n))))
-#define RANDSIGN() ((random() & 1) ? 1 : -1)
-
-static void
-rotate(GLfloat *pos, GLfloat *v, GLfloat *dv, GLfloat max_v)
-{
- double ppos = *pos;
-
- /* tick position */
- if (ppos < 0)
- ppos = -(ppos + *v);
- else
- ppos += *v;
-
- if (ppos > 1.0)
- ppos -= 1.0;
- else if (ppos < 0)
- ppos += 1.0;
-
- if (ppos < 0) abort();
- if (ppos > 1.0) abort();
- *pos = (*pos > 0 ? ppos : -ppos);
-
- /* accelerate */
- *v += *dv;
-
- /* clamp velocity */
- if (*v > max_v || *v < -max_v)
- {
- *dv = -*dv;
- }
- /* If it stops, start it going in the other direction. */
- else if (*v < 0)
- {
- if (random() % 4)
- {
- *v = 0;
-
- /* keep going in the same direction */
- if (random() % 2)
- *dv = 0;
- else if (*dv < 0)
- *dv = -*dv;
- }
- else
- {
- /* reverse gears */
- *v = -*v;
- *dv = -*dv;
- *pos = -*pos;
- }
- }
-
- /* Alter direction of rotational acceleration randomly. */
- if (! (random() % 120))
- *dv = -*dv;
-
- /* Change acceleration very occasionally. */
- if (! (random() % 200))
- {
- if (*dv == 0)
- *dv = 0.00001;
- else if (random() & 1)
- *dv *= 1.2;
- else
- *dv *= 0.8;
- }
-}
-
-
/* Pushes a 1x1x1 cube at XYZ into the sp->squares list.
*/
static void
}
+Bool
+sponge_handle_event (ModeInfo *mi, XEvent *event)
+{
+ sponge_configuration *sp = &sps[MI_SCREEN(mi)];
+
+ if (event->xany.type == ButtonPress &&
+ event->xbutton.button & Button1)
+ {
+ sp->button_down_p = True;
+ gltrackball_start (sp->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)
+ {
+ sp->button_down_p = False;
+ return True;
+ }
+ else if (event->xany.type == MotionNotify &&
+ sp->button_down_p)
+ {
+ gltrackball_track (sp->trackball,
+ event->xmotion.x, event->xmotion.y,
+ MI_WIDTH (mi), MI_HEIGHT (mi));
+ return True;
+ }
+
+ return False;
+}
+
+
+
void
init_sponge (ModeInfo *mi)
{
glEnable(GL_CULL_FACE);
}
- sp->rotx = frand(1.0) * RANDSIGN();
- sp->roty = frand(1.0) * RANDSIGN();
- sp->rotz = frand(1.0) * RANDSIGN();
-
- /* bell curve from 0-3 degrees, avg 1.5 */
- sp->dx = (frand(1) + frand(1) + frand(1)) / (360/2);
- sp->dy = (frand(1) + frand(1) + frand(1)) / (360/2);
- sp->dz = (frand(1) + frand(1) + frand(1)) / (360/2);
-
- sp->d_max = sp->dx * 2;
-
- sp->ddx = 0.00006 + frand(0.00003);
- sp->ddy = 0.00006 + frand(0.00003);
- sp->ddz = 0.00006 + frand(0.00003);
+ {
+ double spin_speed = 1.0;
+ double wander_speed = 0.03;
+ sp->rot = make_rotator (do_spin ? spin_speed : 0,
+ do_spin ? spin_speed : 0,
+ do_spin ? spin_speed : 0,
+ 1.0,
+ do_wander ? wander_speed : 0,
+ True);
+ sp->trackball = gltrackball_init ();
+ }
sp->ncolors = 128;
sp->colors = (XColor *) calloc(sp->ncolors, sizeof(XColor));
glScalef(1.1, 1.1, 1.1);
{
- GLfloat x, y, z;
-
- if (do_wander)
- {
- static int frame = 0;
-
-# define SINOID(SCALE,SIZE) \
- ((((1 + sin((frame * (SCALE)) / 2 * M_PI)) / 2.0) * (SIZE)) - (SIZE)/2)
-
- x = SINOID(0.0071, 8.0);
- y = SINOID(0.0053, 6.0);
- z = SINOID(0.0037, 15.0);
- frame++;
- glTranslatef(x, y, z);
- }
-
- if (do_spin)
- {
- x = sp->rotx;
- y = sp->roty;
- z = sp->rotz;
- if (x < 0) x = 1 - (x + 1);
- if (y < 0) y = 1 - (y + 1);
- if (z < 0) z = 1 - (z + 1);
-
- glRotatef(x * 360, 1.0, 0.0, 0.0);
- glRotatef(y * 360, 0.0, 1.0, 0.0);
- glRotatef(z * 360, 0.0, 0.0, 1.0);
-
- rotate(&sp->rotx, &sp->dx, &sp->ddx, sp->d_max);
- rotate(&sp->roty, &sp->dy, &sp->ddy, sp->d_max);
- rotate(&sp->rotz, &sp->dz, &sp->ddz, sp->d_max);
- }
+ double x, y, z;
+ get_position (sp->rot, &x, &y, &z, !sp->button_down_p);
+ glTranslatef((x - 0.5) * 8,
+ (y - 0.5) * 6,
+ (z - 0.5) * 15);
+
+ gltrackball_rotate (sp->trackball);
+
+ get_rotation (sp->rot, &x, &y, &z, !sp->button_down_p);
+ glRotatef (x * 360, 1.0, 0.0, 0.0);
+ glRotatef (y * 360, 0.0, 1.0, 0.0);
+ glRotatef (z * 360, 0.0, 0.0, 1.0);
}
color0[0] = sp->colors[sp->ccolor0].red / 65536.0;
projects / xscreensaver / blobdiff