libstage: add stage_node_[sg]et_origin()

A way to specify how the node's position relates to the node's
AABB rather than always being centered.

An origin of -1,-1 would place position at the bottom left corner
of the node's AABB, and +1,+1 the top right corner.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/stage.h b/src/stage.h
index e16f917..edb35dd 100644
--- a/src/stage.h
+++ b/src/stage.h
@@ -51,6 +51,8 @@ void stage_node_set_aabb(const stage_t *stage, stage_node_t *node, const aabb_t
 void stage_node_get_aabb(const stage_t *stage, const stage_node_t *node, aabb_t *res_aabb);
 void stage_node_set_position(const stage_t *stage, stage_node_t *node, v2f_t *position);
 void stage_node_get_position(const stage_t *stage, const stage_node_t *node, v2f_t *res_position);
+void stage_node_set_origin(const stage_t *stage, stage_node_t *node, v2f_t *origin);
+void stage_node_get_origin(const stage_t *stage, const stage_node_t *node, v2f_t *res_origin);
 void stage_node_set_active(const stage_t *stage, stage_node_t *node);
 void stage_node_set_inactive(const stage_t *stage, stage_node_t *node);
 void stage_node_set_locked(const stage_t *stage, stage_node_t *node);