-/* jigglypuff - the least colorful screensaver you'll ever see
+/* jigglypuff - a most, most, unfortunate screensaver.
*
* Copyright (c) 2003 Keith Macleod (kmacleod@primus.ca)
*
* orbiting lazily about the screen. More of an accident
* than anything else.
*
- * This could either use more options, or less options and
- * more randomness.
- *
* Apologies to anyone who thought they were getting a Pokemon
* out of this.
*
* Of course, if you modify it to do something interesting and/or
* funny, I'd appreciate receiving a copy.
+ *
+ * 04/06/2003 - Oops, figured out what was wrong with the sphere
+ * mapping. I had assumed it was done in model space,
+ * but of course I was totally wrong... Eye space you
+ * say? Yup. km
+ *
+ * 03/31/2003 - Added chrome to the color options. The mapping
+ * is anything but 'correct', but it's a pretty good
+ * effect anyways, as long as the surface is jiggling
+ * enough that you can't tell. Sure, it seems kind of odd
+ * that it's reflecting a sky that's obviously not there,
+ * but who has time to worry about silly details like
+ * that? Not me, ah rekkin'. km
+ *
*/
#include <X11/Intrinsic.h>
#ifdef STANDALONE
-# define PROGCLASS "Jigglypuff"
-# define HACK_INIT init_jigglypuff
-# define HACK_DRAW draw_jigglypuff
-# define HACK_RESHAPE reshape_jigglypuff
-# define jigglypuff_opts xlockmore_opts
-# define DEFAULTS "*random: True\n" \
- "*delay: 20000\n" \
- "*showFPS: False\n" \
- "wireframe: False\n"
+# define PROGCLASS "Jigglypuff"
+# define HACK_INIT init_jigglypuff
+# define HACK_DRAW draw_jigglypuff
+# define HACK_RESHAPE reshape_jigglypuff
+# define HACK_HANDLE_EVENT jigglypuff_handle_event
+# define EVENT_MASK PointerMotionMask
+# define jigglypuff_opts xlockmore_opts
+
+#define DEF_COLOR "cycle"
+#define DEF_SHININESS "100"
+#define DEF_COMPLEXITY "2"
+#define DEF_SPEED "500"
+#define DEF_DISTANCE "100"
+#define DEF_HOLD "800"
+#define DEF_SPHERISM "75"
+#define DEF_DAMPING "500"
+
+# define DEFAULTS "*delay: 20000\n" \
+ "*showFPS: False\n" \
+ "*wireframe: False\n" \
+ "*color: cycle\n" \
+ "*shininess: 100\n" \
+ "*complexity: 2\n" \
+ "*speed: 500\n" \
+ "*distance: 100\n" \
+ "*hold: 800\n" \
+ "*spherism: 200\n" \
+ "*damping: 500\n"
+
# include "xlockmore.h"
#else
# include "config.h"
#endif
+#include "xpm-ximage.h"
+#include "gltrackball.h"
+#include "../images/jigglymap.xpm"
+
#ifdef USE_GL
#include <GL/gl.h>
#define min(a,b) (((a)<(b))?(a):(b))
#endif
+/* Why isn't RAND_MAX correct in the first place? */
+#define REAL_RAND_MAX (2.0*(float)RAND_MAX)
+
static int spherism;
static int hold;
static int distance;
static int damping;
-static int do_wireframe;
+static int complexity;
+static int speed;
+
static int do_tetrahedron;
-static int do_spooky;
+static int spooky;
+static char *color;
+static int shininess;
+
static int random_parms;
typedef struct solid solid;
float damping_factor;
int do_wireframe;
- int do_spooky;
+ int spooky;
+ int color_style;
+ GLint shininess;
+ GLfloat jiggly_color[4];
+ GLfloat color_dir[3];
solid *shape;
+
+ trackball_state *trackball;
+ int button_down;
+
float angle;
float axis;
+ float speed;
GLXContext *glx_context;
-}jigglystruct;
+} jigglystruct;
static jigglystruct *jss = NULL;
{"+random", ".Jigglypuff.random", XrmoptionNoArg, (caddr_t)"false"},
{"-tetra", ".Jigglypuff.tetra", XrmoptionNoArg, (caddr_t)"true"},
{"+tetra", ".Jigglypuff.tetra", XrmoptionNoArg, (caddr_t)"false"},
- {"-spooky", ".Jigglypuff.spooky", XrmoptionNoArg, (caddr_t)"true"},
- {"+spooky", ".Jigglypuff.spooky", XrmoptionNoArg, (caddr_t)"false"},
- {"-spherism", ".Jigglypuff.spherism", XrmoptionSepArg, "500"},
- {"-hold", ".Jigglypuff.hold", XrmoptionSepArg, "500"},
- {"-distance", "Jigglypuff.distance", XrmoptionSepArg, "500"},
- {"-damping", "Jigglypuff.damping", XrmoptionSepArg, "50"}
+ {"-spooky", ".Jigglypuff.spooky", XrmoptionSepArg, (caddr_t)"0"},
+ {"-color", ".Jigglypuff.color", XrmoptionSepArg, (caddr_t)DEF_COLOR},
+ {"-shininess", ".Jigglypuff.shininess", XrmoptionSepArg, (caddr_t)DEF_SHININESS},
+ {"-complexity", ".Jigglypuff.complexity", XrmoptionSepArg, (caddr_t)DEF_COMPLEXITY},
+ {"-speed", ".Jigglypuff.speed", XrmoptionSepArg, (caddr_t)DEF_SPEED},
+ {"-spherism", ".Jigglypuff.spherism", XrmoptionSepArg, (caddr_t)DEF_SPHERISM},
+ {"-hold", ".Jigglypuff.hold", XrmoptionSepArg, (caddr_t)DEF_HOLD},
+ {"-distance", "Jigglypuff.distance", XrmoptionSepArg, (caddr_t)DEF_DISTANCE},
+ {"-damping", "Jigglypuff.damping", XrmoptionSepArg, (caddr_t)DEF_DAMPING}
};
static argtype vars[] = {
{(caddr_t*)&random_parms, "random", "Random", "False", t_Bool},
- {(caddr_t*)&do_tetrahedron, "tetra", "Tetra", "True", t_Bool},
- {(caddr_t*)&do_spooky, "spooky", "Spooky", "False", t_Bool},
- {(caddr_t*)&spherism, "spherism", "Spherism", "100", t_Int},
- {(caddr_t*)&hold, "hold", "Hold", "600", t_Int},
- {(caddr_t*)&distance, "distance", "Distance", "500", t_Int},
- {(caddr_t*)&damping, "damping", "Damping", "50", t_Int}
+ {(caddr_t*)&do_tetrahedron, "tetra", "Tetra", "False", t_Bool},
+ {(caddr_t*)&spooky, "spooky", "Spooky", "0", t_Int},
+ {(caddr_t*)&color, "color", "Color", DEF_COLOR, t_String},
+ {(caddr_t*)&shininess, "shininess", "Shininess", DEF_SHININESS, t_Int},
+ {(caddr_t*)&complexity, "complexity", "Complexity", DEF_COMPLEXITY, t_Int},
+ {(caddr_t*)&speed, "speed", "Speed", DEF_SPEED, t_Int},
+ {(caddr_t*)&spherism, "spherism", "Spherism", DEF_SPHERISM, t_Int},
+ {(caddr_t*)&hold, "hold", "Hold", DEF_HOLD, t_Int},
+ {(caddr_t*)&distance, "distance", "Distance", DEF_DISTANCE, t_Int},
+ {(caddr_t*)&damping, "damping", "Damping", DEF_DAMPING, t_Int}
};
#undef countof
ModeSpecOpt jigglypuff_opts = {countof(opts), opts, countof(vars), vars, NULL};
+#define COLOR_STYLE_NORMAL 0
+#define COLOR_STYLE_CYCLE 1
+#define COLOR_STYLE_CLOWNBARF 2
+#define COLOR_STYLE_FLOWERBOX 3
+#define COLOR_STYLE_CHROME 4
+
+#define CLOWNBARF_NCOLORS 5
+
+static GLfloat clownbarf_colors[CLOWNBARF_NCOLORS][4] = {
+ {0.7, 0.7, 0.0, 1.0},
+ {0.8, 0.1, 0.1, 1.0},
+ {0.1, 0.1, 0.8, 1.0},
+ {0.9, 0.9, 0.9, 1.0},
+ {0.0, 0.0, 0.0, 1.0}
+};
+
+static GLfloat flowerbox_colors[4][4] = {
+ {0.7, 0.7, 0.0, 1.0},
+ {0.9, 0.0, 0.0, 1.0},
+ {0.0, 0.9, 0.0, 1.0},
+ {0.0, 0.0, 0.9, 1.0},
+};
+
#ifdef DEBUG
#define _DEBUG(msg, args...) do { \
fprintf(stderr, "%s : %d : " msg ,__FILE__,__LINE__ ,##args); \
#define _DEBUG(msg, args...)
#endif
+/* This is all the half-edge b-rep code (as well as basic geometry) */
typedef struct face face;
typedef struct edge edge;
typedef struct hedge hedge;
struct face {
solid *s;
hedge *start;
+ GLfloat *color;
face *next;
};
vertex *next;
};
-static void vector_init(vector v, coord x, coord y, coord z)
+static inline void vector_init(vector v, coord x, coord y, coord z)
{
v[0] = x;
v[1] = y;
v[2] = z;
}
-static void vector_copy(vector d, vector s)
+static inline void vector_copy(vector d, vector s)
{
d[0] = s[0];
d[1] = s[1];
d[2] = s[2];
}
-#if 0
-static void vector_add(vector v1, vector v2, vector v)
+static inline void vector_add(vector v1, vector v2, vector v)
{
vector_init(v, v1[0]+v2[0], v1[1]+v2[1], v1[2]+v2[2]);
}
-#endif
-static void vector_add_to(vector v1, vector v2)
+static inline void vector_add_to(vector v1, vector v2)
{
v1[0] += v2[0];
v1[1] += v2[1];
v1[2] += v2[2];
}
-static void vector_sub(vector v1, vector v2, vector v)
+static inline void vector_sub(vector v1, vector v2, vector v)
{
vector_init(v, v1[0]-v2[0], v1[1]-v2[1], v1[2]-v2[2]);
}
-static void vector_scale(vector v, coord s)
+static inline void vector_scale(vector v, coord s)
{
v[0] *= s;
v[1] *= s;
v[2] *= s;
}
-#if 0
-static coord dot(vector v1, vector v2)
+static inline coord dot(vector v1, vector v2)
{
return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2];
}
-#endif
-static void cross(vector v1, vector v2, vector v)
+static inline void cross(vector v1, vector v2, vector v)
{
vector_init(v,
v1[1]*v2[2] - v2[1]*v1[2],
v1[0]*v2[1] - v2[0]*v1[1]);
}
-static coord magnitude2(vector v)
+static inline coord magnitude2(vector v)
{
return v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
}
-static coord magnitude(vector v)
+static inline coord magnitude(vector v)
{
return sqrt(v[0]*v[0] + v[1]*v[1] + v[2]*v[2]);
}
-static void normalize(vector v)
+static inline void normalize(vector v)
{
coord mag = 1.0/sqrt(v[0]*v[0]+v[1]*v[1]+v[2]*v[2]);
v[2] *= mag;
}
-static void normalize_to(vector v, coord m)
+static inline void normalize_to(vector v, coord m)
{
coord mag = 1.0/sqrt(v[0]*v[0]+v[1]*v[1]+v[2]*v[2])/m;
v[2] *= mag;
}
-static void midpoint(vector v1, vector v2, vector v)
+static inline void midpoint(vector v1, vector v2, vector v)
{
vector_init(v,
v1[0] + 0.5 * (v2[0] - v1[0]),
v1[2] + 0.5 * (v2[2] - v1[2]));
}
-static hedge *partner(hedge *h) {
+static inline hedge *partner(hedge *h) {
if(!h->e)
return NULL;
if(h == h->e->left) {
return h->e->left;
}
else {
- _DEBUG("Holy shit Batman! this edge is fucked up!\n");
+ _DEBUG("Inconsistent edge detected. Presumably, this is a bug. Exiting.\n");
exit(-1);
}
}
-static vertex *vertex_new(solid *s, vector v)
+vertex *vertex_new(solid *s, vector v)
{
vertex *vtx = (vertex*)malloc(sizeof(vertex));
* i.e. it is a helper for the split_* functions, which
* maintain the consistency of the solid.
*/
-static hedge *hedge_new(hedge *hafter, vertex *vtx)
+hedge *hedge_new(hedge *hafter, vertex *vtx)
{
hedge *h = (hedge*)malloc(sizeof(hedge));
return h;
}
-static edge *edge_new(solid *s)
+edge *edge_new(solid *s)
{
edge *e = (edge*)malloc(sizeof(edge));
if(!e) {
return e;
}
-static face *face_new(solid *s, hedge *h)
+face *face_new(solid *s, hedge *h)
{
face *f = (face*)malloc(sizeof(face));
if(!f) {
* there are at least 2 faces.
* partner(h)->next->vtx == vtx
* Post-assumptions:
- * the new halfedge will be inserted _before_ the
- * halfedge owning vtx in f.
- * THIS IS WRONG. FIX ME!!!
- * New Deal - the Invariants
* the new halfedge will be inserted AFTER the indicated
* halfedge. This means that f->start is guaranteed not to
* change.
- * Also, the vertex returned will have h==<the new halfedge>.
+ * the vertex returned will have h==<the new halfedge>.
*/
-static vertex *vertex_split(hedge *h, vector v)
+vertex *vertex_split(hedge *h, vector v)
{
hedge *h2, *hn1, *hn2;
vertex *vtxn;
f1 = h->f;
h2 = partner(h);
f2 = h2->f;
-
+
vtxn = vertex_new(f1->s, v);
hn1 = hedge_new(h, vtxn);
vtxn->h = hn1;
return vtxn;
}
-static face *face_split(face *f, hedge *h1, hedge *h2)
+face *face_split(face *f, hedge *h1, hedge *h2)
{
hedge *hn1, *hn2, *tmp;
edge *en;
tmp->f = fn;
tmp = tmp->next;
} while(tmp != fn->start);
+ fn->color = f->color;
return fn;
}
-static solid *solid_new(vector where)
+solid *solid_new(vector where)
{
solid *s = (solid*)malloc(sizeof(solid));
face *f1, *f2;
return s;
}
-static solid *tetra(void)
-{
- solid *s;
- vertex *vtx;
- vector v;
- hedge *h;
- face *f;
-
- vector_init(v, 1, 1, 1);
- s = solid_new(v);
- vector_init(v, -1, -1, 1);
- h = s->faces->start;
- vtx = vertex_split(h, v);
- vector_init(v, -1, 1, -1);
- vtx = vertex_split(vtx->h, v);
- h = vtx->h;
- f = face_split(s->faces, h, h->prev);
- vector_init(v, 1, -1, -1);
- vertex_split(f->start, v);
- f = s->faces->next->next;
- h = f->start;
- face_split(f, h, h->next->next);
-
- return s;
-}
-
-static void face_tessel2(face *f)
+/* This is all the code directly related to constructing the jigglypuff */
+void face_tessel2(face *f)
{
hedge *h1=f->start->prev, *h2=f->start->next;
* added at the head of the list. If that ever changes,
* this is borked.
*/
-static void solid_tesselate(solid *s)
+void solid_tesselate(solid *s)
{
edge *e = s->edges;
face *f = s->faces;
}
}
-static void solid_spherify(solid * s, coord size)
+void solid_spherify(solid * s, coord size)
{
vertex *vtx = s->vertices;
}
}
-static solid *tesselated_tetrahedron(coord size, int iter)
+solid *tetrahedron(jigglystruct *js)
{
- solid *s = tetra();
+ solid *s;
+ vertex *vtx;
+ vector v;
+ hedge *h;
+ face *f;
+ int i;
+
+ vector_init(v, 1, 1, 1);
+ s = solid_new(v);
+ vector_init(v, -1, -1, 1);
+ h = s->faces->start;
+ vtx = vertex_split(h, v);
+ vector_init(v, -1, 1, -1);
+ vtx = vertex_split(vtx->h, v);
+ h = vtx->h;
+ f = face_split(s->faces, h, h->prev);
+ vector_init(v, 1, -1, -1);
+ vertex_split(f->start, v);
+ f = s->faces->next->next;
+ h = f->start;
+ face_split(f, h, h->next->next);
+
+ if(js->color_style == COLOR_STYLE_FLOWERBOX) {
+ f = s->faces;
+ for(i=0; i<4; i++) {
+ f->color = flowerbox_colors[i];
+ f = f->next;
+ }
+ }
+
+ return s;
+}
+
+solid *tesselated_tetrahedron(coord size, int iter, jigglystruct *js) {
+ solid *s = tetrahedron(js);
int i;
for(i=0; i<iter; i++) {
return s;
}
-static void vertex_calcnormal(vertex *vtx, int spooky)
+static void clownbarf_colorize(solid *s) {
+ face *f = s->faces;
+ while(f) {
+ f->color = clownbarf_colors[random() % CLOWNBARF_NCOLORS];
+ f = f->next;
+ }
+}
+
+/* Here be the rendering code */
+
+static inline void vertex_calcnormal(vertex *vtx, jigglystruct *js)
{
hedge *start = vtx->h, *h=start;
vector_add_to(vtx->n, norm);
h = partner(h)->next;
} while(h != start);
- if(!spooky)
+ if(!js->spooky)
normalize(vtx->n);
else
- vector_scale(vtx->n, 15);
+ vector_scale(vtx->n, js->spooky);
}
-static void vertex_render(vertex *vtx)
+static inline void vertex_render(vertex *vtx, jigglystruct *js)
{
glNormal3fv(vtx->n);
glVertex3fv(vtx->v);
}
-static void face_render(face *f)
+/* This can be optimized somewhat due to the fact that all
+ * the faces are triangles. I haven't actually tested to
+ * see what the cost is of calling glBegin/glEnd for each
+ * triangle.
+ */
+static inline void face_render(face *f, jigglystruct *js)
{
hedge *h1, *h2, *hend;
hend = h1->prev;
h2 = h1->next;
+ if(js->color_style == COLOR_STYLE_FLOWERBOX ||
+ js->color_style == COLOR_STYLE_CLOWNBARF)
+ glColor4fv(f->color);
glBegin(GL_TRIANGLES);
while(h1 != hend && h2 !=hend) {
- vertex_render(h1->vtx);
- vertex_render(h2->vtx);
- vertex_render(hend->vtx);
+ vertex_render(h1->vtx, js);
+ vertex_render(h2->vtx, js);
+ vertex_render(hend->vtx, js);
h1 = h2;
h2 = h1->next;
}
glEnd();
}
-static void jigglypuff_render(jigglystruct *js)
+void jigglypuff_render(jigglystruct *js)
{
face *f = js->shape->faces;
vertex *vtx = js->shape->vertices;
while(vtx) {
- vertex_calcnormal(vtx, js->do_spooky);
+ vertex_calcnormal(vtx, js);
vtx = vtx->next;
}
while(f) {
- face_render(f);
+ face_render(f, js);
f=f->next;
}
}
-void calculate_parameters(jigglystruct *js) {
- js->stable_distance = (float)distance / 10000.0;
- js->hold_strength = (float)hold / 1000.0;
- js->spherify_strength = (float)spherism / 10000.0;
- js->damping_velocity = (float)damping / 100000.0;
- js->damping_factor =
- min(0.1, 1.0/max(js->hold_strength, js->spherify_strength));
-}
+/* This is the jiggling code */
-void randomize_parameters(void) {
- do_tetrahedron = !(random() & 1);
- do_spooky = !(random() & 3);
- do_wireframe = !(random() & 3);
- spherism = random() % 1000;
- hold = random() % 1000;
- distance = random() % 1000;
- damping = random() % 1000;
-}
+/* stable distance when subdivs == 4 */
+#define STABLE_DISTANCE 0.088388347648
-void update_shape(jigglystruct *js) {
+void update_shape(jigglystruct *js)
+{
vertex *vtx = js->shape->vertices;
edge *e = js->shape->edges;
vector zero;
vector_init(zero, 0, 0, 0);
+ /* sum all the vertex-vertex forces */
while(e) {
vector f;
coord mag;
vector_add_to(e->right->vtx->f, f);
e = e->next;
}
+
+ /* scale back the v-v force and add the spherical force
+ * then add the result to the vertex velocity, damping
+ * if necessary. Finally, move the vertex */
while(vtx) {
coord mag;
vector to_sphere;
}
}
-void draw_jigglypuff(ModeInfo *mi)
-{
- jigglystruct *js = &jss[MI_SCREEN(mi)];
-
- glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(js->glx_context));
-
- glDrawBuffer(GL_BACK);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
+/* These are the various initialization routines */
- glRotatef(js->angle, sin(js->axis), cos(js->axis), -sin(js->axis));
- glTranslatef(0,0,5);
-
- if((js->angle+=0.1) >= 360.0f ) {
- js->angle -= 360.0f;
- }
- if((js->axis+=0.01f) >= 2*M_PI ) {
- js->axis -= 2*M_PI;
- }
- jigglypuff_render(js);
- if(mi->fps_p)
- do_fps(mi);
- glFinish();
- update_shape(js);
- glXSwapBuffers(MI_DISPLAY(mi), MI_WINDOW(mi));
-}
-
-void reshape_jigglypuff(ModeInfo *mi, int width, int height)
+void init_texture(ModeInfo *mi)
{
- GLfloat aspect = (GLfloat)width / (GLfloat)height;
+ XImage *img = xpm_to_ximage(mi->dpy, mi->xgwa.visual,
+ mi->xgwa.colormap, jigglymap_xpm);
- glViewport(0, 0, width, height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glFrustum(-0.5*aspect, 0.5*aspect, -0.5, 0.5, 1, 20);
- glTranslatef(0,0,-10);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
+ img->width, img->height, 0, GL_RGBA,
+ GL_UNSIGNED_BYTE, img->data);
+
+ XDestroyImage(img);
}
-static void setup_opengl(ModeInfo *mi, jigglystruct *js)
+void setup_opengl(ModeInfo *mi, jigglystruct *js)
{
const GLfloat lpos0[4] = {-12, 8, 12, 0};
const GLfloat lpos1[4] = {7, -5, 0, 0};
const GLfloat lcol0[4] = {0.7, 0.7, 0.65, 1};
const GLfloat lcol1[4] = {0.3, 0.2, 0.1, 1};
- const GLfloat color1[4]={1, 1, 1, 0.5};
- const GLfloat color2[4]={0.9, 0.9, 0.9, 0.5};
+ const GLfloat scolor[4]= {0.9, 0.9, 0.9, 0.5};
+ glDrawBuffer(GL_BACK);
+ glClearColor(0, 0, 0, 0);
glShadeModel(GL_SMOOTH);
+ glEnable(GL_DEPTH_TEST);
if(js->do_wireframe) {
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glEnable(GL_CULL_FACE);
}
- glEnable(GL_DEPTH_TEST);
+ if(js->color_style != COLOR_STYLE_CHROME) {
+ glEnable(GL_LIGHTING);
+ glEnable(GL_LIGHT0);
+ glEnable(GL_LIGHT1);
+
+ glLightfv(GL_LIGHT0, GL_POSITION, lpos0);
+ glLightfv(GL_LIGHT1, GL_POSITION, lpos1);
+ glLightfv(GL_LIGHT0, GL_DIFFUSE, lcol0);
+ glLightfv(GL_LIGHT1, GL_DIFFUSE, lcol1);
+
+ glEnable(GL_COLOR_MATERIAL);
+ glColor4fv(js->jiggly_color);
+
+ glMaterialfv(GL_FRONT, GL_SPECULAR, scolor);
+ glMateriali(GL_FRONT, GL_SHININESS, js->shininess);
+ }
+ else { /* chrome */
+ init_texture(mi);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
+ glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
+ glEnable(GL_TEXTURE_GEN_S);
+ glEnable(GL_TEXTURE_GEN_T);
+ glEnable(GL_TEXTURE_2D);
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+ }
+}
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- glEnable(GL_LIGHT1);
+int parse_color(jigglystruct *js)
+{
+ int r, g, b;
+ if(!strcmp(color, "clownbarf")) {
+ js->color_style = COLOR_STYLE_CLOWNBARF;
+ return 1;
+ }
+ else if(!strcmp(color, "flowerbox")) {
+ js->color_style = COLOR_STYLE_FLOWERBOX;
+ return 1;
+ }
+ else if(!strcmp(color, "chrome")) {
+ js->color_style = COLOR_STYLE_CHROME;
+ return 1;
+ }
+ else if(!strcmp(color, "cycle")) {
+ js->color_style = COLOR_STYLE_CYCLE;
+ js->jiggly_color[0] = ((float)random()) / REAL_RAND_MAX * 0.7 + 0.3;
+ js->jiggly_color[1] = ((float)random()) / REAL_RAND_MAX * 0.7 + 0.3;
+ js->jiggly_color[2] = ((float)random()) / REAL_RAND_MAX * 0.7 + 0.3;
+ js->jiggly_color[3] = 1.0f;
+ js->color_dir[0] = ((float)random()) / REAL_RAND_MAX / 100.0;
+ js->color_dir[1] = ((float)random()) / REAL_RAND_MAX / 100.0;
+ js->color_dir[2] = ((float)random()) / REAL_RAND_MAX / 100.0;
+ return 1;
+ }
+ else
+ js->color_style = 0;
+ if(strlen(color) != 7)
+ return 0;
+ if(sscanf(color,"#%02x%02x%02x", &r, &g, &b) != 3) {
+ return 0;
+ }
+ js->jiggly_color[0] = ((float)r)/255;
+ js->jiggly_color[1] = ((float)g)/255;
+ js->jiggly_color[2] = ((float)b)/255;
+ js->jiggly_color[3] = 1.0f;
- glLightfv(GL_LIGHT0, GL_POSITION, lpos0);
- glLightfv(GL_LIGHT1, GL_POSITION, lpos1);
- glLightfv(GL_LIGHT0, GL_DIFFUSE, lcol0);
- glLightfv(GL_LIGHT1, GL_DIFFUSE, lcol1);
+ return 1;
+}
- glClearColor(0, 0, 0, 0);
+void randomize_parameters(jigglystruct *js) {
+ do_tetrahedron = random() & 1;
+ js->do_wireframe = !(random() & 3);
+ js->color_style = random() % 5;
+ if(js->color_style == COLOR_STYLE_NORMAL
+ || js->color_style == COLOR_STYLE_CYCLE) {
+ js->jiggly_color[0] = ((float)random()) / REAL_RAND_MAX * 0.5 + 0.5;
+ js->jiggly_color[1] = ((float)random()) / REAL_RAND_MAX * 0.5 + 0.5;
+ js->jiggly_color[2] = ((float)random()) / REAL_RAND_MAX * 0.5 + 0.5;
+ js->jiggly_color[3] = 1.0f;
+ if(js->color_style == COLOR_STYLE_CYCLE) {
+ js->color_dir[0] = ((float)random()) / REAL_RAND_MAX / 100.0;
+ js->color_dir[1] = ((float)random()) / REAL_RAND_MAX / 100.0;
+ js->color_dir[2] = ((float)random()) / REAL_RAND_MAX / 100.0;
+ }
+ }
+ if((js->color_style != COLOR_STYLE_CHROME) && (random() & 1))
+ js->spooky = (random() % 6) + 4;
+ else
+ js->spooky = 0;
+ js->shininess = random() % 200;
+ speed = (random() % 700) + 50;
+ /* It' kind of dull if this is too high when it starts as a sphere */
+ spherism = do_tetrahedron ? (random() % 500) + 20 : (random() % 100) + 10;
+ hold = (random() % 800) + 100;
+ distance = (random() % 500) + 100;
+ damping = (random() % 800) + 50;
+}
+
+void calculate_parameters(jigglystruct *js, int subdivs) {
+ /* try to compensate for the inherent instability at
+ * low complexity. */
+ float dist_factor = (subdivs == 6) ? 2 : (subdivs == 5) ? 1 : 0.5;
+
+ js->stable_distance = ((float)distance / 500.0)
+ * (STABLE_DISTANCE / dist_factor);
+ js->hold_strength = (float)hold / 10000.0;
+ js->spherify_strength = (float)spherism / 10000.0;
+ js->damping_velocity = (float)damping / 100000.0;
+ js->damping_factor =
+ 0.001/max(js->hold_strength, js->spherify_strength);
+
+ js->speed = (float)speed / 1000.0;
+}
+
+/* The screenhack related functions begin here */
+
+Bool jigglypuff_handle_event(ModeInfo *mi, XEvent *event)
+{
+ jigglystruct *js = &jss[MI_SCREEN(mi)];
+
+ if(event->xany.type == ButtonPress &&
+ event->xbutton.button & Button1) {
+ js->button_down = 1;
+ gltrackball_start(js->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) {
+ js->button_down = 0;
+ return True;
+ }
+ else if(event->xany.type == MotionNotify && js->button_down) {
+ gltrackball_track(js->trackball, event->xmotion.x, event->xmotion.y,
+ MI_WIDTH(mi), MI_HEIGHT(mi));
+ return True;
+ }
+ return False;
+}
+
+void reshape_jigglypuff(ModeInfo *mi, int width, int height)
+{
+ GLfloat aspect = (GLfloat)width / (GLfloat)height;
+
+ glViewport(0, 0, width, height);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glFrustum(-0.5*aspect, 0.5*aspect, -0.5, 0.5, 1, 20);
+/* glTranslatef(0, 0, -10);*/
+}
+
+void draw_jigglypuff(ModeInfo *mi)
+{
+ jigglystruct *js = &jss[MI_SCREEN(mi)];
+
+ glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(js->glx_context));
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glTranslatef(0,0,-10);
- glMaterialfv(GL_FRONT, GL_DIFFUSE, color1);
- glMaterialfv(GL_FRONT, GL_SPECULAR, color2);
- glMateriali(GL_FRONT, GL_SHININESS, 100);
+ glRotatef(js->angle, sin(js->axis), cos(js->axis), -sin(js->axis));
+ glTranslatef(0, 0, 5);
+ if(!(js->button_down)) {
+ if((js->angle += js->speed) >= 360.0f ) {
+ js->angle -= 360.0f;
+ }
+ if((js->axis+=0.01f) >= 2*M_PI ) {
+ js->axis -= 2*M_PI;
+ }
+ }
+ gltrackball_rotate(js->trackball);
+
+ if(js->color_style == COLOR_STYLE_CYCLE) {
+ int i;
+ vector_add(js->jiggly_color, js->color_dir, js->jiggly_color);
+
+ for(i=0; i<3; i++) {
+ if(js->jiggly_color[i] > 1.0 || js->jiggly_color[i] < 0.3) {
+ js->color_dir[i] = (-js->color_dir[i]);
+ js->jiggly_color[i] += js->color_dir[i];
+ }
+ }
+ glColor4fv(js->jiggly_color);
+ }
+
+ jigglypuff_render(js);
+ if(MI_IS_FPS(mi))
+ do_fps(mi);
+ glFinish();
+ update_shape(js);
+ glXSwapBuffers(MI_DISPLAY(mi), MI_WINDOW(mi));
}
void init_jigglypuff(ModeInfo *mi)
{
jigglystruct *js;
+ int subdivs;
if(!jss) {
jss = (jigglystruct*)
exit(1);
}
}
+
js = &jss[MI_SCREEN(mi)];
+
js->do_wireframe = MI_IS_WIREFRAME(mi);
+
+ js->shininess = shininess;
+
+ subdivs = (complexity==1) ? 4 : (complexity==2) ? 5
+ : (complexity==3) ? 6 : 5;
+
+ js->spooky = spooky << (subdivs-3);
+
+ if(!parse_color(js)) {
+ fprintf(stderr, "%s: Bad color specification: '%s'.\n", progname, color);
+ exit(-1);
+ }
if(random_parms)
- randomize_parameters();
+ randomize_parameters(js);
+
+ js->shape = tesselated_tetrahedron(1, subdivs, js);
+
+ if(!do_tetrahedron)
+ solid_spherify(js->shape, 1);
+
+ if(js->color_style == COLOR_STYLE_CLOWNBARF)
+ clownbarf_colorize(js->shape);
+
+ calculate_parameters(js, subdivs);
+
if((js->glx_context = init_GL(mi)) != NULL) {
glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(js->glx_context));
setup_opengl(mi, js);
+ reshape_jigglypuff(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
}
- js->shape = tesselated_tetrahedron(1, 5);
- if(!do_tetrahedron)
- solid_spherify(js->shape, 1);
- calculate_parameters(js);
- js->do_spooky = do_spooky;
+ else {
+ MI_CLEARWINDOW(mi);
+ }
+ js->trackball = gltrackball_init();
+ _DEBUG("distance : %f\nhold : %f\nspherify : %f\ndamping : %f\ndfact : %f\n",
+ js->stable_distance, js->hold_strength, js->spherify_strength,
+ js->damping_velocity, js->damping_factor);
+ _DEBUG("wire : %d\nspooky : %d\nstyle : %d\nshininess : %d\n",
+ js->do_wireframe, js->spooky, js->color_style, js->shininess);
}
+/* This is the end of the file */
+
#endif /* USE_GL */
+
+
+
+
+
+
+
projects / xscreensaver / blobdiff