solstice-solver

commit 2c26a2f248c578f4abc10ad23b2b2e2a0a5f3a3c
parent de54c65f9878b2e1c8a3aef6c2d9d33618010cdb
Author: Christophe Coustet <christophe.coustet@meso-star.com>
Date:   Wed, 15 Mar 2017 11:23:48 +0100

Add normal to instances.

Diffstat:
M
src/ssol.h
 | 
6
++++++
M
src/ssol_instance.c
 | 
13
++++++++++++-
M
src/test_ssol_instance.c
 | 
4
++++

3 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/src/ssol.h b/src/ssol.h
@@ -736,6 +736,12 @@ ssol_instance_get_area
   (const struct ssol_instance* instance,
    double* area);
 
+/* Retrieve the normal of the instance */
+SSOL_API res_T
+ssol_instance_get_normal
+  (const struct ssol_instance* instance,
+   double normal[3]);
+
 SSOL_API res_T
 ssol_instance_get_shaded_shapes_count
   (const struct ssol_instance* instance,
diff --git a/src/ssol_instance.c b/src/ssol_instance.c
@@ -193,13 +193,24 @@ ssol_instance_get_area
   (const struct ssol_instance* instance,
    double* area)
 {
-  if (!instance || !area) return RES_BAD_ARG;;
+  if (!instance || !area) return RES_BAD_ARG;
   /* the area of the 3D surface */
   *area = instance->shape_rt_area;
   return RES_OK;
 }
 
 res_T
+ssol_instance_get_normal
+  (const struct ssol_instance* instance,
+   double normal[3])
+{
+  if (!instance || !normal) return RES_BAD_ARG;
+  SSOL(object_get_normal(instance->object, normal));
+  d33_muld3(normal, instance->transform, normal);
+  return RES_OK;
+}
+
+res_T
 ssol_instance_get_shaded_shapes_count
   (const struct ssol_instance* instance, size_t* count)
 {
diff --git a/src/test_ssol_instance.c b/src/test_ssol_instance.c
@@ -78,6 +78,10 @@ main(int argc, char** argv)
   CHECK(ssol_instance_set_transform(instance, transform), RES_OK);
   CHECK(ssol_instance_set_transform(instance, transform), RES_OK);
 
+  CHECK(ssol_instance_get_normal(instance, NULL), RES_BAD_ARG);
+  CHECK(ssol_instance_get_normal(NULL, val), RES_BAD_ARG);
+  CHECK(ssol_instance_get_normal(instance, val), RES_OK);
+
   CHECK(ssol_instance_set_receiver(NULL, 0, 0), RES_BAD_ARG);
   CHECK(ssol_instance_set_receiver(instance, 0, 0), RES_OK);
   CHECK(ssol_instance_sample(NULL, 0), RES_BAD_ARG);