added scr_lvled, a bunch of libraries, and improved framework code

[raydungeon] / libs / goat3d / src / g3dscn.h

diff --git a/libs/goat3d/src/g3dscn.h b/libs/goat3d/src/g3dscn.h
new file mode 100644 (file)
index 0000000..e1e8f5e
--- /dev/null
+++ b/libs/goat3d/src/g3dscn.h
@@ -0,0 +1,201 @@
+/*
+goat3d - 3D scene, and animation file format library.
+Copyright (C) 2013-2023  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 GOAT3D_SCENE_H_
+#define GOAT3D_SCENE_H_
+
+#include "cgmath/cgmath.h"
+#include "goat3d.h"
+#include "g3danm.h"
+#include "aabox.h"
+
+enum {
+       OBJTYPE_UNKNOWN,
+       OBJTYPE_MESH,
+       OBJTYPE_LIGHT,
+       OBJTYPE_CAMERA
+};
+
+enum {
+       LTYPE_POINT,
+       LTYPE_DIR,
+       LTYPE_SPOT
+};
+
+enum {
+       CAMTYPE_PRS,
+       CAMTYPE_TARGET
+};
+
+
+struct face {
+       int v[3];
+};
+
+typedef struct int4 {
+       int x, y, z, w;
+} int4;
+
+struct material_attrib {
+       char *name;
+       cgm_vec4 value;
+       char *map;
+};
+
+struct goat3d_material {
+       char *name;
+       int idx;
+       struct material_attrib *attrib; /* dynarr */
+};
+
+
+#define OBJECT_COMMON  \
+       int type; \
+       char *name; \
+       cgm_vec3 pos; \
+       cgm_quat rot; \
+       cgm_vec3 scale; \
+       void *next
+
+struct object {
+       OBJECT_COMMON;
+};
+
+struct goat3d_mesh {
+       OBJECT_COMMON;
+       struct goat3d_material *mtl;
+
+       /* dynamic arrays */
+       cgm_vec3 *vertices;
+       cgm_vec3 *normals;
+       cgm_vec3 *tangents;
+       cgm_vec2 *texcoords;
+       cgm_vec4 *skin_weights;
+       int4 *skin_matrices;
+       cgm_vec4 *colors;
+       struct face *faces;
+       struct goat3d_node **bones;
+};
+
+struct goat3d_light {
+       OBJECT_COMMON;
+       int ltype;
+       cgm_vec3 color;
+       cgm_vec3 attenuation;
+       float max_dist;
+       cgm_vec3 dir;                                   /* for LTYPE_DIR */
+       float inner_cone, outer_cone;   /* for LTYPE_SPOT */
+};
+
+struct goat3d_camera {
+       OBJECT_COMMON;
+       int camtype;
+       float fov;
+       float near_clip, far_clip;
+       cgm_vec3 target, up;
+};
+
+struct goat3d_node {
+       char *name;
+       enum goat3d_node_type type;
+       void *obj;
+       int child_count;
+
+       cgm_vec3 pivot;
+       /* local transformation */
+       cgm_vec3 pos, scale;
+       cgm_quat rot;
+       /* values from animation evaluation, take precedence over the above if
+        * has_anim is true
+        */
+       cgm_vec3 apos, ascale;
+       cgm_quat arot;
+       int has_anim;
+       /* matrix computed from the above*/
+       float matrix[16];
+       int matrix_valid;
+
+       struct goat3d_node *parent;
+       struct goat3d_node *child;
+       struct goat3d_node *next;
+};
+
+
+struct goat3d {
+       unsigned int flags;
+       char *search_path;
+
+       char *name;
+       cgm_vec3 ambient;
+
+       /* dynamic arrays */
+       struct goat3d_material **materials;
+       struct goat3d_mesh **meshes;
+       struct goat3d_light **lights;
+       struct goat3d_camera **cameras;
+       struct goat3d_node **nodes;
+       struct goat3d_anim **anims;
+
+       struct aabox bbox;
+       int bbox_valid;
+
+       /* namegen */
+       unsigned int namecnt[7];
+       char namebuf[64];
+};
+
+extern int goat3d_log_level;
+
+/* defined in goat3d.c, declared here to keep them out of the public API */
+int goat3d_init(struct goat3d *g);
+void goat3d_destroy(struct goat3d *g);
+
+void goat3d_clear(struct goat3d *g);
+
+/* defined in g3dscn.c */
+int g3dimpl_obj_init(struct object *o, int type);
+void g3dimpl_obj_destroy(struct object *o);
+
+void g3dimpl_mesh_bounds(struct aabox *bb, struct goat3d_mesh *m, float *xform);
+
+int g3dimpl_mtl_init(struct goat3d_material *mtl);
+void g3dimpl_mtl_destroy(struct goat3d_material *mtl);
+struct material_attrib *g3dimpl_mtl_findattr(struct goat3d_material *mtl, const char *name);
+struct material_attrib *g3dimpl_mtl_getattr(struct goat3d_material *mtl, const char *name);
+
+void g3dimpl_node_bounds(struct aabox *bb, struct goat3d_node *n);
+
+/*
+void io_fprintf(goat3d_io *io, const char *fmt, ...);
+void io_vfprintf(goat3d_io *io, const char *fmt, va_list ap);
+*/
+
+/* defined in read.c */
+int g3dimpl_scnload(struct goat3d *g, struct goat3d_io *io);
+int g3dimpl_anmload(struct goat3d *g, struct goat3d_io *io);
+
+/* defined in write.c */
+int g3dimpl_scnsave(const struct goat3d *g, struct goat3d_io *io);
+int g3dimpl_anmsave(const struct goat3d *g, struct goat3d_io *io);
+
+/* defined in extmesh.c */
+int g3dimpl_loadmesh(struct goat3d_mesh *mesh, const char *fname);
+
+/* defined in readgltf.c */
+int g3dimpl_loadgltf(struct goat3d *g, struct goat3d_io *io);
+
+#endif /* GOAT3D_SCENE_H_ */