--- /dev/null
+#ifndef CMESH_H_
+#define CMESH_H_
+
+#include <stdio.h>
+#include "cgmath/cgmath.h"
+
+enum {
+ CMESH_ATTR_VERTEX,
+ CMESH_ATTR_NORMAL,
+ CMESH_ATTR_TANGENT,
+ CMESH_ATTR_TEXCOORD,
+ CMESH_ATTR_COLOR,
+ CMESH_ATTR_BONEWEIGHTS,
+ CMESH_ATTR_BONEIDX,
+ CMESH_ATTR_TEXCOORD2,
+
+ CMESH_NUM_ATTR
+};
+
+struct cmesh;
+
+/* global state */
+void cmesh_set_attrib_sdrloc(int attr, int loc);
+int cmesh_get_attrib_sdrloc(int attr);
+void cmesh_clear_attrib_sdrloc(void);
+
+/* mesh functions */
+struct cmesh *cmesh_alloc(void);
+void cmesh_free(struct cmesh *cm);
+
+int cmesh_init(struct cmesh *cm);
+void cmesh_destroy(struct cmesh *cm);
+
+void cmesh_clear(struct cmesh *cm);
+int cmesh_clone(struct cmesh *cmdest, struct cmesh *cmsrc);
+
+int cmesh_set_name(struct cmesh *cm, const char *name);
+const char *cmesh_name(struct cmesh *cm);
+
+int cmesh_has_attrib(struct cmesh *cm, int attr);
+int cmesh_indexed(struct cmesh *cm);
+
+/* vdata can be 0, in which case only memory is allocated
+ * returns pointer to the attribute array
+ */
+float *cmesh_set_attrib(struct cmesh *cm, int attr, int nelem, unsigned int num,
+ const float *vdata);
+float *cmesh_attrib(struct cmesh *cm, int attr); /* invalidates VBO */
+const float *cmesh_attrib_ro(struct cmesh *cm, int attr); /* doesn't invalidate */
+float *cmesh_attrib_at(struct cmesh *cm, int attr, int idx);
+const float *cmesh_attrib_at_ro(struct cmesh *cm, int attr, int idx);
+int cmesh_attrib_count(struct cmesh *cm, int attr);
+int cmesh_push_attrib(struct cmesh *cm, int attr, float *v);
+int cmesh_push_attrib1f(struct cmesh *cm, int attr, float x);
+int cmesh_push_attrib2f(struct cmesh *cm, int attr, float x, float y);
+int cmesh_push_attrib3f(struct cmesh *cm, int attr, float x, float y, float z);
+int cmesh_push_attrib4f(struct cmesh *cm, int attr, float x, float y, float z, float w);
+
+/* indices can be 0, in which case only memory is allocated
+ * returns pointer to the index array
+ */
+unsigned int *cmesh_set_index(struct cmesh *cm, int num, const unsigned int *indices);
+unsigned int *cmesh_index(struct cmesh *cm); /* invalidates IBO */
+const unsigned int *cmesh_index_ro(struct cmesh *cm); /* doesn't invalidate */
+int cmesh_index_count(struct cmesh *cm);
+int cmesh_push_index(struct cmesh *cm, unsigned int idx);
+
+int cmesh_poly_count(struct cmesh *cm);
+
+/* attr can be -1 to invalidate all attributes */
+void cmesh_invalidate_vbo(struct cmesh *cm, int attr);
+void cmesh_invalidate_ibo(struct cmesh *cm);
+
+int cmesh_append(struct cmesh *cmdest, struct cmesh *cmsrc);
+
+/* submeshes */
+void cmesh_clear_submeshes(struct cmesh *cm);
+/* a submesh is defined as a consecutive range of faces */
+int cmesh_submesh(struct cmesh *cm, const char *name, int fstart, int fcount);
+int cmesh_remove_submesh(struct cmesh *cm, int idx);
+int cmesh_find_submesh(struct cmesh *cm, const char *name);
+int cmesh_submesh_count(struct cmesh *cm);
+int cmesh_clone_submesh(struct cmesh *cmdest, struct cmesh *cm, int subidx);
+
+/* immediate-mode style mesh construction interface */
+int cmesh_vertex(struct cmesh *cm, float x, float y, float z);
+void cmesh_normal(struct cmesh *cm, float nx, float ny, float nz);
+void cmesh_tangent(struct cmesh *cm, float tx, float ty, float tz);
+void cmesh_texcoord(struct cmesh *cm, float u, float v, float w);
+void cmesh_boneweights(struct cmesh *cm, float w1, float w2, float w3, float w4);
+void cmesh_boneidx(struct cmesh *cm, int idx1, int idx2, int idx3, int idx4);
+
+/* dir_xform can be null, in which case it's calculated from xform */
+void cmesh_apply_xform(struct cmesh *cm, float *xform, float *dir_xform);
+
+void cmesh_flip(struct cmesh *cm); /* flip faces (winding) and normals */
+void cmesh_flip_faces(struct cmesh *cm);
+void cmesh_flip_normals(struct cmesh *cm);
+
+int cmesh_explode(struct cmesh *cm); /* undo all vertex sharing */
+
+/* this is only guaranteed to work on an exploded mesh */
+void cmesh_calc_face_normals(struct cmesh *cm);
+
+void cmesh_draw(struct cmesh *cm);
+void cmesh_draw_range(struct cmesh *cm, int start, int count);
+void cmesh_draw_submesh(struct cmesh *cm, int subidx); /* XXX only for indexed meshes currently */
+void cmesh_draw_wire(struct cmesh *cm, float linesz);
+void cmesh_draw_vertices(struct cmesh *cm, float ptsz);
+void cmesh_draw_normals(struct cmesh *cm, float len);
+void cmesh_draw_tangents(struct cmesh *cm, float len);
+
+/* get the bounding box in local space. The result will be cached and subsequent
+ * calls will return the same box. The cache gets invalidated by any functions that
+ * can affect the vertex data
+ */
+void cmesh_aabbox(struct cmesh *cm, cgm_vec3 *vmin, cgm_vec3 *vmax);
+
+/* get the bounding sphere in local space. The result will be cached ... see above */
+float cmesh_bsphere(struct cmesh *cm, cgm_vec3 *center, float *rad);
+
+/* texture coordinate manipulation */
+void cmesh_texcoord_apply_xform(struct cmesh *cm, float *xform);
+void cmesh_texcoord_gen_plane(struct cmesh *cm, cgm_vec3 *norm, cgm_vec3 *tang);
+void cmesh_texcoord_gen_box(struct cmesh *cm);
+void cmesh_texcoord_gen_cylinder(struct cmesh *cm);
+
+/* FILE I/O */
+int cmesh_load(struct cmesh *cm, const char *fname);
+
+int cmesh_dump(struct cmesh *cm, const char *fname);
+int cmesh_dump_file(struct cmesh *cm, FILE *fp);
+int cmesh_dump_obj(struct cmesh *cm, const char *fname);
+int cmesh_dump_obj_file(struct cmesh *cm, FILE *fp, int voffs);
+
+
+
+#endif /* CMESH_H_ */
projects / dosdemo / blobdiff