stardis-solver

commit 5a7af779a3a624a87f6abc650e6ce1d758df3379
parent 926f3f141f8358baa890e34b70b6d37ed34c87c0
Author: Vincent Forest <vincent.forest@meso-star.com>
Date:   Fri,  6 Apr 2018 16:20:42 +0200

Add the sdis_scene_get_boundary_position function

Diffstat:
M
src/sdis.h
 | 
7
+++++++
M
src/sdis_scene.c
 | 
31
+++++++++++++++++++++++++++++++

2 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/src/sdis.h b/src/sdis.h
@@ -400,6 +400,13 @@ sdis_scene_get_aabb
    double lower[3],
    double upper[3]);
 
+SDIS_API res_T
+sdis_scene_get_boundary_position
+  (const struct sdis_scene* scn,
+   const size_t iprim, /* Primitive index */
+   const double uv[2], /* Parametric coordinate onto the pimitive */
+   double pos[3]); /* World space position */
+
 /*******************************************************************************
  * An estimator stores the state of a simulation
  ******************************************************************************/
diff --git a/src/sdis_scene.c b/src/sdis_scene.c
@@ -608,6 +608,37 @@ sdis_scene_get_aabb
   return RES_OK;
 }
 
+res_T
+sdis_scene_get_boundary_position
+  (const struct sdis_scene* scn,
+   const size_t iprim,
+   const double uv[],
+   double pos[])
+{
+  if(!scn || !uv || !pos) return RES_BAD_ARG;
+  if(iprim >= scene_get_primitives_count(scn)) return RES_BAD_ARG;
+
+  if(scene_is_2d(scn)) {
+    struct s2d_primitive prim;
+    struct s2d_attrib attr;
+    float s = (float)uv[0];
+
+    S2D(scene_view_get_primitive(scn->s2d_view, (unsigned int)iprim, &prim));
+    S2D(primitive_get_attrib(&prim, S2D_POSITION, s, &attr));
+    d2_set_f2(pos, attr.value);
+  } else {
+    struct s3d_primitive prim;
+    struct s3d_attrib attr;
+    float st[2];
+
+    f2_set_d2(st, uv);
+    S3D(scene_view_get_primitive(scn->s3d_view, (unsigned int)iprim, &prim));
+    S3D(primitive_get_attrib(&prim, S3D_POSITION, st, &attr));
+    d3_set_f3(pos, attr.value);
+  }
+  return RES_OK;
+}
+
 /*******************************************************************************
  * Local miscellaneous function
  ******************************************************************************/