Jacques Lucke
1c05f30e4d
UV maps that are used for surface attachment must not have overlapping uv islands, because then the same uv coordinate would correspond to multiple surface positions. Ref T99936.
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include "BLI_float4x4.hh"
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#include "BLI_kdtree.h"
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#include "BLI_math_vector.hh"
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#include "BLI_span.hh"
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#include "BKE_bvhutils.h"
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#include "BKE_curves.hh"
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#include "DNA_mesh_types.h"
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#include "DNA_meshdata_types.h"
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#include "GEO_reverse_uv_sampler.hh"
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namespace blender::geometry {
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struct AddCurvesOnMeshInputs {
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/** UV Coordinates at which the new curves should be added. */
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Span<float2> uvs;
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/** Determines shape of new curves. */
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bool interpolate_length = false;
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bool interpolate_shape = false;
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bool interpolate_point_count = false;
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float fallback_curve_length = 0.0f;
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int fallback_point_count = 0;
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/** Information about the surface that the new curves are attached to. */
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const Mesh *surface = nullptr;
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const ReverseUVSampler *reverse_uv_sampler = nullptr;
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Span<float3> corner_normals_su;
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bke::CurvesSurfaceTransforms *transforms = nullptr;
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/**
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* KD-Tree that contains the root points of existing curves. This is only necessary when
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* interpolation is used.
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*/
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KDTree_3d *old_roots_kdtree = nullptr;
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bool r_uv_error = false;
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};
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struct AddCurvesOnMeshOutputs {
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bool uv_error = false;
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};
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/**
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* Generate new curves on a mesh surface with the given inputs. Existing curves stay intact.
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*/
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AddCurvesOnMeshOutputs add_curves_on_mesh(bke::CurvesGeometry &curves,
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const AddCurvesOnMeshInputs &inputs);
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float3 compute_surface_point_normal(const MLoopTri &looptri,
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const float3 &bary_coord,
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const Span<float3> corner_normals);
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} // namespace blender::geometry
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