98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
#include "BLI_heap.h"
|
|
#include "BLI_math_matrix.hh"
|
|
#include "BLI_memarena.h"
|
|
#include "BLI_span.hh"
|
|
#include "BLI_vector.hh"
|
|
|
|
#include "DNA_space_types.h"
|
|
#include "DNA_vec_types.h"
|
|
|
|
#pragma once
|
|
|
|
/** \file
|
|
* \ingroup geo
|
|
*/
|
|
|
|
struct UnwrapOptions;
|
|
|
|
enum eUVPackIsland_MarginMethod {
|
|
/** Use scale of existing UVs to multiply margin. */
|
|
ED_UVPACK_MARGIN_SCALED = 0,
|
|
/** Just add the margin, ignoring any UV scale. */
|
|
ED_UVPACK_MARGIN_ADD,
|
|
/** Specify a precise fraction of final UV output. */
|
|
ED_UVPACK_MARGIN_FRACTION,
|
|
};
|
|
|
|
enum eUVPackIsland_ShapeMethod {
|
|
/** Use Axis-Aligned Bounding-Boxes. */
|
|
ED_UVPACK_SHAPE_AABB = 0,
|
|
/** Use convex hull. */
|
|
ED_UVPACK_SHAPE_CONVEX,
|
|
/** Use concave hull. */
|
|
ED_UVPACK_SHAPE_CONCAVE,
|
|
};
|
|
|
|
namespace blender::geometry {
|
|
|
|
/** See also #UnwrapOptions. */
|
|
class UVPackIsland_Params {
|
|
public:
|
|
/** Reasonable defaults. */
|
|
UVPackIsland_Params();
|
|
|
|
void setFromUnwrapOptions(const UnwrapOptions &options);
|
|
void setUDIMOffsetFromSpaceImage(const SpaceImage *sima);
|
|
|
|
/** Islands can be rotated to improve packing. */
|
|
bool rotate;
|
|
/** (In UV Editor) only pack islands which have one or more selected UVs. */
|
|
bool only_selected_uvs;
|
|
/** (In 3D Viewport or UV Editor) only pack islands which have selected faces. */
|
|
bool only_selected_faces;
|
|
/** When determining islands, use Seams as boundary edges. */
|
|
bool use_seams;
|
|
/** (In 3D Viewport or UV Editor) use aspect ratio from face. */
|
|
bool correct_aspect;
|
|
/** Ignore islands which have any pinned UVs. */
|
|
bool ignore_pinned;
|
|
/** Treat unselected UVs as if they were pinned. */
|
|
bool pin_unselected;
|
|
/** Additional space to add around each island. */
|
|
float margin;
|
|
/** Which formula to use when scaling island margin. */
|
|
eUVPackIsland_MarginMethod margin_method;
|
|
/** Additional translation for bottom left corner. */
|
|
float udim_base_offset[2];
|
|
/** Which shape to use when packing. */
|
|
eUVPackIsland_ShapeMethod shape_method;
|
|
};
|
|
|
|
class PackIsland {
|
|
public:
|
|
rctf bounds_rect;
|
|
/** Output. */
|
|
float2 pre_translate;
|
|
/** Unchanged by #pack_islands, used by caller. */
|
|
int caller_index;
|
|
|
|
void add_triangle(const float2 uv0, const float2 uv1, const float2 uv2);
|
|
void add_polygon(const blender::Span<float2> uvs, MemArena *arena, Heap *heap);
|
|
void finalize_geometry(const UVPackIsland_Params ¶ms, MemArena *arena, Heap *heap);
|
|
|
|
private:
|
|
blender::Vector<float2> triangle_vertices_;
|
|
friend class Occupancy;
|
|
};
|
|
|
|
void pack_islands(const Span<PackIsland *> &islands,
|
|
const UVPackIsland_Params ¶ms,
|
|
float r_scale[2]);
|
|
|
|
/** Compute `r = mat * (a + b)` with high precision. */
|
|
void mul_v2_m2_add_v2v2(float r[2], const float mat[2][2], const float a[2], const float b[2]);
|
|
|
|
} // namespace blender::geometry
|