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Diffstat (limited to 'src/geometry/geometry.c')
-rw-r--r--src/geometry/geometry.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/src/geometry/geometry.c b/src/geometry/geometry.c
index 78fbaea..72af92c 100644
--- a/src/geometry/geometry.c
+++ b/src/geometry/geometry.c
@@ -340,3 +340,80 @@ void kai_release_triangles(struct ka_triangles_t t)
}
+int kai_read_mesh(struct ka_mesh_t *dest, struct kai_tag_t *src)
+{
+ CHECK_TAG_TYPE("mesh");
+
+ dest->source_count = 0;
+ dest->source = NULL;
+ dest->triangles_count = 0;
+ dest->triangles = NULL;
+
+ /* load vertices first bc if we don't kai_release_mesh will do bad things if we hit an error */
+ struct kai_tag_t *child;
+ int result;
+
+ child = kai_tag_get_first_child_with_type(src, "vertices");
+ if (child == NULL) { return -1; }
+ result = kai_read_vertices(&(dest->vertices), child);
+ if (result != 0) { return -1; }
+
+ /* load sources */
+ unsigned int source_count = 0;
+ FOR_CHILD_OF_TYPE(src, child, "source") { source_count += 1; }
+
+ dest->source = kai_alloc(source_count * sizeof(struct ka_source_t), "mesh source array");
+ if (dest->source == NULL) { return -1; }
+
+ int i = 0;
+ FOR_CHILD_OF_TYPE(src, child, "source") {
+ result = kai_read_source(dest->source + i, child);
+ if (result != 0) {
+ dest->source_count = i;
+ kai_release_mesh(*dest);
+ return -1;
+ }
+ i += 1;
+ }
+ dest->source_count = source_count;
+
+ /* load triangles */
+ unsigned int triangles_count = 0;
+ FOR_CHILD_OF_TYPE(src, child, "triangles") { triangles_count += 1; }
+
+ dest->triangles = kai_alloc(triangles_count * sizeof(struct ka_triangles_t), "mesh triangles array");
+ if (dest->triangles == NULL) {
+ kai_release_mesh(*dest);
+ return -1;
+ }
+
+ i = 0;
+ FOR_CHILD_OF_TYPE(src, child, "triangles") {
+ result = kai_read_triangles(dest->triangles + i, child);
+ if (result != 0) {
+ dest->triangles_count = i;
+ kai_release_mesh(*dest);
+ return -1;
+ }
+ i += 1;
+ }
+ dest->triangles_count = triangles_count;
+
+ return 0;
+}
+
+void kai_release_mesh(struct ka_mesh_t m)
+{
+ int i;
+ for (i=0; i<m.source_count; i++) {
+ kai_release_source(m.source[i]);
+ }
+ free(m.source);
+
+ kai_release_vertices(m.vertices);
+
+ for (i=0; i<m.triangles_count; i++) {
+ kai_release_triangles(m.triangles[i]);
+ }
+ free(m.triangles);
+}