[Bf-blender-cvs] [3dd6912fce9] master: Mesh Remap: Face Corner Data: Do not use large epsilon values to create bvhtrees.

[Germano]

Commit: 3dd6912fce9285c52cdff26739068703ca378a86
Author: Germano
Date:   Fri May 4 09:01:56 2018 -0300
Branches: master
https://developer.blender.org/rB3dd6912fce9285c52cdff26739068703ca378a86

Mesh Remap: Face Corner Data: Do not use large epsilon values to create bvhtrees.

Use ray radius instead.

===================================================================

M	source/blender/blenkernel/intern/mesh_remap.c

===================================================================

diff --git a/source/blender/blenkernel/intern/mesh_remap.c b/source/blender/blenkernel/intern/mesh_remap.c
index 8e93be14f6b..cf4c70c4aaa 100644
--- a/source/blender/blenkernel/intern/mesh_remap.c
+++ b/source/blender/blenkernel/intern/mesh_remap.c
@@ -422,9 +422,6 @@ typedef struct IslandResult {
 #define MREMAP_RAYCAST_APPROXIMATE_NR 3
 /* Each approximated raycasts will have n times bigger radius than previous one. */
 #define MREMAP_RAYCAST_APPROXIMATE_FAC 5.0f
-/* BVH epsilon value we have to give to bvh 'constructor' when doing approximated raycasting. */
-#define MREMAP_RAYCAST_APPROXIMATE_BVHEPSILON(_ray_radius) \
-	((float)MREMAP_RAYCAST_APPROXIMATE_NR * MREMAP_RAYCAST_APPROXIMATE_FAC * (_ray_radius))
 
 /* min 16 rays/face, max 400. */
 #define MREMAP_RAYCAST_TRI_SAMPLES_MIN 4
@@ -547,9 +544,7 @@ void BKE_mesh_remap_calc_verts_from_dm(
 			bvhtree_from_mesh_get(&treedata, dm_src, BVHTREE_FROM_LOOPTRI, 2);
 
 			if (mode == MREMAP_MODE_VERT_POLYINTERP_VNORPROJ) {
-				if (mode & MREMAP_USE_NORPROJ) {
-					treedata.sphere_radius = ray_radius;
-				}
+				treedata.sphere_radius = ray_radius;
 				for (i = 0; i < numverts_dst; i++) {
 					copy_v3_v3(tmp_co, verts_dst[i].co);
 					normal_short_to_float_v3(tmp_no, verts_dst[i].no);
@@ -1205,8 +1200,6 @@ void BKE_mesh_remap_calc_loops_from_dm(
 		IslandResult **islands_res;
 		size_t islands_res_buff_size = MREMAP_DEFAULT_BUFSIZE;
 
-		const float bvh_epsilon = (mode & MREMAP_USE_NORPROJ) ? MREMAP_RAYCAST_APPROXIMATE_BVHEPSILON(ray_radius) : 0.0f;
-
 		if (!use_from_vert) {
 			vcos_src = MEM_mallocN(sizeof(*vcos_src) * (size_t)num_verts_src, __func__);
 			dm_src->getVertCos(dm_src, vcos_src);
@@ -1356,7 +1349,7 @@ void BKE_mesh_remap_calc_loops_from_dm(
 					}
 					/* verts 'ownership' is transfered to treedata here, which will handle its freeing. */
 					bvhtree_from_mesh_verts_ex(&treedata[tindex], verts_src, num_verts_src, verts_allocated_src,
-					                           verts_active, num_verts_active, bvh_epsilon, 2, 6);
+					                           verts_active, num_verts_active, 0.0, 2, 6);
 					if (verts_allocated_src) {
 						verts_allocated_src = false;  /* Only 'give' our verts once, to first tree! */
 					}
@@ -1403,7 +1396,7 @@ void BKE_mesh_remap_calc_loops_from_dm(
 					        verts_src, verts_allocated_src,
 					        loops_src, loops_allocated_src,
 					        looptri_src, num_looptri_src, false,
-					        looptri_active, num_looptri_active, bvh_epsilon, 2, 6);
+					        looptri_active, num_looptri_active, 0.0, 2, 6);
 					if (verts_allocated_src) {
 						verts_allocated_src = false;  /* Only 'give' our verts once, to first tree! */
 					}
@@ -1416,7 +1409,7 @@ void BKE_mesh_remap_calc_loops_from_dm(
 			}
 			else {
 				BLI_assert(num_trees == 1);
-				bvhtree_from_mesh_looptri(&treedata[0], dm_src, bvh_epsilon, 2, 6);
+				bvhtree_from_mesh_looptri(&treedata[0], dm_src, 0.0, 2, 6);
 			}
 		}
 
@@ -1572,8 +1565,10 @@ void BKE_mesh_remap_calc_loops_from_dm(
 						}
 
 						while (n--) {
+							float radius = ray_radius / w;
+							tdata->sphere_radius = radius;
 							if (mesh_remap_bvhtree_query_raycast(
-							        tdata, &rayhit, tmp_co, tmp_no, ray_radius / w, max_dist, &hit_dist))
+							        tdata, &rayhit, tmp_co, tmp_no, radius, max_dist, &hit_dist))
 							{
 								islands_res[tindex][plidx_dst].factor = (hit_dist ? (1.0f / hit_dist) : 1e18f) * w;
 								islands_res[tindex][plidx_dst].hit_dist = hit_dist;
@@ -2258,7 +2253,6 @@ void BKE_mesh_remap_calc_polys_from_dm(
 
 #undef MREMAP_RAYCAST_APPROXIMATE_NR
 #undef MREMAP_RAYCAST_APPROXIMATE_FAC
-#undef MREMAP_RAYCAST_APPROXIMATE_BVHEPSILON
 #undef MREMAP_RAYCAST_TRI_SAMPLES_MIN
 #undef MREMAP_RAYCAST_TRI_SAMPLES_MAX
 #undef MREMAP_DEFAULT_BUFSIZE