X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=libs%2Fpsys%2Fpstrack.h;fp=libs%2Fpsys%2Fpstrack.h;h=e71f042d3bc694eef1030838278cb55798fd0387;hb=fca3f24e31b3bbbe81ce0ef00da901480a2a92cc;hp=0000000000000000000000000000000000000000;hpb=e808f24e718ba3eae01b20dc3dc9e1526fd20871;p=andemo

diff --git a/libs/psys/pstrack.h b/libs/psys/pstrack.h
new file mode 100644
index 0000000..e71f042
--- /dev/null
+++ b/libs/psys/pstrack.h
@@ -0,0 +1,66 @@
+/*
+libpsys - reusable particle system library.
+Copyright (C) 2011-2018  John Tsiombikas <nuclear@member.fsf.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef PSTRACK_H_
+#define PSTRACK_H_
+
+#include <anim/anim.h>
+
+struct psys_track {
+	struct anm_track trk;
+
+	anm_time_t cache_tm;
+	float cache_val;
+};
+
+struct psys_track3 {
+	struct anm_track x, y, z;
+
+	anm_time_t cache_tm;
+	float cache_vec[3];
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int psys_init_track(struct psys_track *track);
+void psys_destroy_track(struct psys_track *track);
+
+int psys_init_track3(struct psys_track3 *track);
+void psys_destroy_track3(struct psys_track3 *track);
+
+/* XXX dest must have been initialized first */
+void psys_copy_track(struct psys_track *dest, const struct psys_track *src);
+void psys_copy_track3(struct psys_track3 *dest, const struct psys_track3 *src);
+
+void psys_eval_track(struct psys_track *track, anm_time_t tm);
+void psys_set_value(struct psys_track *track, anm_time_t tm, float v);
+float psys_get_value(struct psys_track *track, anm_time_t tm);
+float psys_get_cur_value(struct psys_track *track);
+
+void psys_eval_track3(struct psys_track3 *track, anm_time_t tm);
+void psys_set_value3(struct psys_track3 *track, anm_time_t tm, float x, float y, float z);
+/* returns pointer to the internal cached value, and if vec is not null, also copies it there */
+float *psys_get_value3(struct psys_track3 *track, anm_time_t tm, float *vec);
+float *psys_get_cur_value3(struct psys_track3 *track, float *vec);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* PSTRACK_H_ */