star-3d

commit 94bb0d5e6e2c4cb61eba8d16d971d9fdd1708c59
parent b6e5e41304d1b748fa5c7ec57e8fd3489f38edc2
Author: Vincent Forest <vincent.forest@meso-star.com>
Date:   Thu, 22 Oct 2020 11:56:54 +0200

Test the closest point query on a rotated instance

Diffstat:
M
src/test_s3d_closest_point.c
 | 
86
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 86 insertions(+), 0 deletions(-)
diff --git a/src/test_s3d_closest_point.c b/src/test_s3d_closest_point.c
@@ -35,6 +35,7 @@
 #include "test_s3d_utils.h"
 
 #include <rsys/float3.h>
+#include <rsys/float33.h>
 #include <limits.h>
 
 #define ON_EDGE_EPSILON 1.e-4f
@@ -951,6 +952,90 @@ test_single_triangle(struct s3d_device* dev)
   CHK(s3d_scene_ref_put(scn) == RES_OK);
 }
 
+static void
+test_single_triangle_instantiated(struct s3d_device* dev)
+{
+  union { float f; uint32_t u32; } ucast;
+  struct s3d_scene* scn = NULL;
+  struct s3d_shape* shape = NULL;
+  struct s3d_scene_view* view0 = NULL;
+  struct s3d_scene_view* view1 = NULL;
+  struct s3d_vertex_data vdata = S3D_VERTEX_DATA_NULL;
+  struct s3d_hit hit0 = S3D_HIT_NULL;
+  struct s3d_hit hit1 = S3D_HIT_NULL;
+  float transform[12];
+  float vertices[9];
+  float transformed_vertices[9];
+  float query_pos[3];
+
+  vdata.usage = S3D_POSITION;
+  vdata.type = S3D_FLOAT3;
+  vdata.get = triangle_get_pos;
+
+  /* Setup the query position. The following data are retrieved from a user
+   * case and are thus setuped as it, in its raw binary format */
+  query_pos[0] = (ucast.u32 = 0xc1dc7a9e, ucast.f);
+  query_pos[1] = (ucast.u32 = 0xc382179f, ucast.f);
+  query_pos[2] = (ucast.u32 = 0xc32181b0, ucast.f);
+
+  f3(vertices+0, -28.5f, -298.5f, 69.964429f);
+  f3(vertices+3, -27.0f, -298.5f, 69.899651f);
+  f3(vertices+6, -27.0f, -297.0f, 69.204593f);
+
+  /* Setup the triangle transformation */
+  f33_rotation(transform, (float)MDEG2RAD(45.0), 0, 0);
+  f3_splat(transform+9, 0);
+
+  /* Transform the triangle directly */
+  f33_mulf3(transformed_vertices+0, transform, vertices+0);
+  f33_mulf3(transformed_vertices+3, transform, vertices+3);
+  f33_mulf3(transformed_vertices+6, transform, vertices+6);
+  f3_add(transformed_vertices+0, transformed_vertices+0, transform+9);
+  f3_add(transformed_vertices+1, transformed_vertices+1, transform+9);
+  f3_add(transformed_vertices+2, transformed_vertices+2, transform+9);
+
+  /* Setup the scene with the pre-transformed triangle */
+  CHK(s3d_scene_create(dev, &scn) == RES_OK);
+  CHK(s3d_shape_create_mesh(dev, &shape) == RES_OK);
+  CHK(s3d_scene_attach_shape(scn, shape) == RES_OK);
+  CHK(s3d_mesh_setup_indexed_vertices
+    (shape, 1, triangle_get_ids, 3, &vdata, 1, transformed_vertices) == RES_OK);
+  CHK(s3d_scene_view_create(scn, S3D_TRACE, &view0) == RES_OK);
+  CHK(s3d_scene_ref_put(scn) == RES_OK);
+  CHK(s3d_shape_ref_put(shape) == RES_OK);
+
+  /* Setup the same scene with the transformation performed by Star-3D through
+   * instantiation */
+  CHK(s3d_scene_create(dev, &scn) == RES_OK);
+  CHK(s3d_shape_create_mesh(dev, &shape) == RES_OK);
+  CHK(s3d_scene_attach_shape(scn, shape) == RES_OK);
+  CHK(s3d_mesh_setup_indexed_vertices
+    (shape, 1, triangle_get_ids, 3, &vdata, 1, vertices) == RES_OK);
+  CHK(s3d_shape_ref_put(shape) == RES_OK);
+  CHK(s3d_scene_instantiate(scn, &shape) == RES_OK);
+  CHK(s3d_instance_set_transform(shape, transform) == RES_OK);
+  CHK(s3d_scene_ref_put(scn) == RES_OK);
+  CHK(s3d_scene_create(dev, &scn) == RES_OK);
+  CHK(s3d_scene_attach_shape(scn, shape) == RES_OK);
+  CHK(s3d_scene_view_create(scn, S3D_TRACE, &view1) == RES_OK);
+  CHK(s3d_scene_ref_put(scn) == RES_OK);
+  CHK(s3d_shape_ref_put(shape) == RES_OK);
+
+  /* Find the closest point */
+  CHK(s3d_scene_view_closest_point
+    (view0, query_pos, (float)INF, NULL, &hit0) == RES_OK);
+  CHK(s3d_scene_view_closest_point
+    (view1, query_pos, (float)INF, NULL, &hit1) == RES_OK);
+
+  /* Check that the found hits are the same */
+  CHK(!S3D_HIT_NONE(&hit0));
+  CHK(!S3D_HIT_NONE(&hit1));
+  CHK(eq_epsf(hit0.distance, hit1.distance, 1.e-6f));
+
+  CHK(s3d_scene_view_ref_put(view0) == RES_OK);
+  CHK(s3d_scene_view_ref_put(view1) == RES_OK);
+}
+
 /*******************************************************************************
  * Miscellaneous test
  ******************************************************************************/
@@ -995,6 +1080,7 @@ main(int argc, char** argv)
 
   test_api(dev);
   test_single_triangle(dev);
+  test_single_triangle_instantiated(dev);
   test_cbox(dev);
   test_sphere(dev);
   test_cbox_sphere(dev);