1 files changed, 100 insertions, 0 deletions
diff --git a/hacks/glx/bubble3d.h b/hacks/glx/bubble3d.h
new file mode 100644
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+++ b/hacks/glx/bubble3d.h
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+/* GLBUBBLES (C) 1998 Richard W.M. Jones. */
+
+#ifndef __bubbles3d_h__
+#define __bubbles3d_h__
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#ifdef STANDALONE
+# include <math.h>
+# include "xlockmoreI.h"	/* from the xscreensaver distribution */
+#else /* !STANDALONE */
+# include "xlock.h"		/* from the xlockmore distribution */
+#endif /* !STANDALONE */
+
+#if !defined(HAVE_JWXYZ) && !defined(HAVE_JWZGLES)
+# include <GL/gl.h>
+# include <GL/glu.h>
+#endif
+
+#ifdef HAVE_JWZGLES
+# include "jwzgles.h"
+#endif /* HAVE_JWZGLES */
+
+/* Static configuration. */
+#define GLB_SLOW_GL          0	/* Set this if you have a slow GL
+				   * implementation. If you have an accelerated
+				   * graphics card, set this to 0.
+				 */
+#define GLB_VERTICES_EPSILON 0.0005	/* How close are identical vertices? */
+
+/* Configuration structure. */
+struct glb_config {
+	int         transparent_p;	/* Whether to use alpha blending */
+
+	int         subdivision_depth;	/* Controls how many triangles are in
+					 * each bubble. 2 and 3 are good values.
+					 */
+	int         nr_nudge_axes;	/* Number of directions in which each
+					 * bubble gets stretched. Values between
+					 * 3 and 7 seem to produce good results.
+					 */
+	GLfloat     nudge_angle_factor;		/* Max. amount of rotation in nudge angles.
+						 * Controls the amount of `wobble' we see,
+						 * and 0.3 seems to work well.
+						 */
+	GLfloat     nudge_factor;	/* Max. displacement of any single nudge.
+					 * Controls the amount of the wobble. Depends
+					 * on NR_NUDGE_AXES, and must not exceed
+					 * 1 / NR_NUDGE_AXES. 0.1 is good.
+					 */
+	GLfloat     rotation_factor;	/* Max. amount by which bubbles rotate. */
+	int         create_bubbles_every;	/* How often to create new bubbles. */
+	int         max_bubbles;	/* Max. number of bubbles to create. */
+	double      p_bubble_group[4];	/* Probabilities of creating 1, 2, 3, 4
+					 * bubbles in a group. Cumulative.
+					 */
+	GLfloat     max_size;	/* Max. size. */
+	GLfloat     min_size;	/* Min. size of bubbles. */
+	GLfloat     max_speed;	/* Max. speed. */
+	GLfloat     min_speed;	/* Min. speed of bubbles. */
+	GLfloat     scale_factor;	/* Factor by which bubbles scale from bottom
+					 * of screen to top. 1.5 - 2.0 are OK.
+					 */
+	GLfloat     screen_bottom;	/* Bottom of screen. */
+	GLfloat     screen_top;	/* Top of screen. */
+	GLfloat     bubble_colour[4];	/* Colour of the bubbles. */
+
+	int         polygon_count;
+};
+
+extern struct glb_config glb_config;
+
+#define glb_drand() ((double)LRAND() / (double)MAXRAND)
+
+/*-- From glb_sphere.c. --*/
+typedef struct glb_data glb_data;
+typedef GLfloat glb_vertex[3];
+typedef GLuint glb_triangle[3];
+extern glb_data * glb_sphere_init(void);
+extern glb_vertex *glb_sphere_get_vertices(glb_data *, int *nr_vertices);
+extern glb_triangle *glb_sphere_get_triangles(glb_data *, int *nr_triangles);
+extern void glb_sphere_end(glb_data *);
+
+/*-- From glb_bubble.c. --*/
+extern void *glb_bubble_new(glb_data *d, 
+                            GLfloat x, GLfloat y, GLfloat z, GLfloat scale,
+			    GLfloat y_incr, GLfloat scale_incr);
+extern void glb_bubble_delete(void *);
+extern void glb_bubble_step(void *);
+extern void glb_bubble_draw(glb_data *d, void *);
+extern GLfloat glb_bubble_get_y(void *);
+
+/*-- From glb_draw.c. --*/
+extern void *glb_draw_init(void);
+extern void glb_draw_step(void *);
+extern void glb_draw_end(void *);
+
+#endif /* __bubbles3d_h__ */