From 3d1ab570b924c319fb3753405230d639a2257d8c Mon Sep 17 00:00:00 2001 From: reduz Date: Wed, 22 Jun 2022 21:48:23 +0200 Subject: Add surface indices to TriangleMesh Helps unblock #56597 --- core/math/triangle_mesh.cpp | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'core/math/triangle_mesh.cpp') diff --git a/core/math/triangle_mesh.cpp b/core/math/triangle_mesh.cpp index 54461bf70f..4433559e6d 100644 --- a/core/math/triangle_mesh.cpp +++ b/core/math/triangle_mesh.cpp @@ -104,9 +104,11 @@ void TriangleMesh::get_indices(Vector *r_triangles_indices) const { } } -void TriangleMesh::create(const Vector &p_faces) { +void TriangleMesh::create(const Vector &p_faces, const Vector &p_surface_indices) { valid = false; + ERR_FAIL_COND(p_surface_indices.size() && p_surface_indices.size() != p_faces.size()); + int fc = p_faces.size(); ERR_FAIL_COND(!fc || ((fc % 3) != 0)); fc /= 3; @@ -121,6 +123,7 @@ void TriangleMesh::create(const Vector &p_faces) { //goes in-place. const Vector3 *r = p_faces.ptr(); + const int32_t *si = p_surface_indices.ptr(); Triangle *w = triangles.ptrw(); HashMap db; @@ -148,6 +151,7 @@ void TriangleMesh::create(const Vector &p_faces) { } f.normal = Face3(r[i * 3 + 0], r[i * 3 + 1], r[i * 3 + 2]).get_plane().get_normal(); + f.surface_index = si ? si[i] : 0; bw[i].left = -1; bw[i].right = -1; @@ -264,7 +268,7 @@ Vector3 TriangleMesh::get_area_normal(const AABB &p_aabb) const { return n; } -bool TriangleMesh::intersect_segment(const Vector3 &p_begin, const Vector3 &p_end, Vector3 &r_point, Vector3 &r_normal) const { +bool TriangleMesh::intersect_segment(const Vector3 &p_begin, const Vector3 &p_end, Vector3 &r_point, Vector3 &r_normal, int32_t *r_surf_index) const { uint32_t *stack = (uint32_t *)alloca(sizeof(int) * max_depth); enum { @@ -317,6 +321,9 @@ bool TriangleMesh::intersect_segment(const Vector3 &p_begin, const Vector3 &p_en d = nd; r_point = res; r_normal = f3.get_plane().get_normal(); + if (r_surf_index) { + *r_surf_index = s.surface_index; + } inters = true; } } @@ -366,7 +373,7 @@ bool TriangleMesh::intersect_segment(const Vector3 &p_begin, const Vector3 &p_en return inters; } -bool TriangleMesh::intersect_ray(const Vector3 &p_begin, const Vector3 &p_dir, Vector3 &r_point, Vector3 &r_normal) const { +bool TriangleMesh::intersect_ray(const Vector3 &p_begin, const Vector3 &p_dir, Vector3 &r_point, Vector3 &r_normal, int32_t *r_surf_index) const { uint32_t *stack = (uint32_t *)alloca(sizeof(int) * max_depth); enum { @@ -417,6 +424,9 @@ bool TriangleMesh::intersect_ray(const Vector3 &p_begin, const Vector3 &p_dir, V d = nd; r_point = res; r_normal = f3.get_plane().get_normal(); + if (r_surf_index) { + *r_surf_index = s.surface_index; + } inters = true; } } -- cgit v1.2.3