blender::geometry::Occupancy Class Reference

Public Member Functions
	Occupancy (const float initial_scale)
void	increase_scale ()
void	clear ()
float	trace_triangle (const float2 &uv0, const float2 &uv1, const float2 &uv2, const float margin, const bool write) const
float	trace_island (const PackIsland *island, const UVPhi phi, const float scale, const float margin, const bool write) const

Public Attributes
int	bitmap_radix = 800
float	bitmap_scale_reciprocal = 1.0f

Detailed Description

Helper class for the xatlas strategy. Accelerates geometry queries by approximating exact queries with a bitmap. Includes some book keeping variables to simplify the algorithm.

Note

The last entry, (width-1, height-1) is named the "top-right".

Definition at line 1124 of file uv_pack.cc.

Constructor & Destructor Documentation

Occupancy()

blender::geometry::Occupancy::Occupancy

(

const float

initial_scale

)

Definition at line 1157 of file uv_pack.cc.

References bitmap_radix, bitmap_scale_reciprocal, false, and increase_scale().

Member Function Documentation

clear()

void blender::geometry::Occupancy::clear

(

)

Definition at line 1171 of file uv_pack.cc.

References bitmap_radix, and i.

Referenced by increase_scale(), and blender::geometry::pack_island_xatlas().

increase_scale()

void blender::geometry::Occupancy::increase_scale

(

)

Definition at line 1163 of file uv_pack.cc.

References bitmap_scale_reciprocal, BLI_assert, and clear().

Referenced by Occupancy(), and blender::geometry::pack_island_xatlas().

trace_island()

float blender::geometry::Occupancy::trace_island	(	const PackIsland *	island,
		const UVPhi	phi,
		const float	scale,
		const float	margin,
		const bool	write ) const

Definition at line 1293 of file uv_pack.cc.

References blender::geometry::PackIsland::build_transformation(), blender::geometry::PackIsland::get_diagonal_support(), i, mul_v2_m2v2(), blender::geometry::PackIsland::pivot_, trace_triangle(), and blender::geometry::PackIsland::triangle_vertices_.

Referenced by blender::geometry::find_best_fit_for_island(), and blender::geometry::pack_island_xatlas().

trace_triangle()

float blender::geometry::Occupancy::trace_triangle	(	const float2 &	uv0,
		const float2 &	uv1,
		const float2 &	uv2,
		const float	margin,
		const bool	write ) const

Definition at line 1203 of file uv_pack.cc.

References bitmap_radix, bitmap_scale_reciprocal, distance(), floorf, max_fff(), min_ff(), min_fff(), blender::geometry::signed_distance_fat_triangle(), x, and y.

Referenced by trace_island().

Member Data Documentation

bitmap_radix

int blender::geometry::Occupancy::bitmap_radix = 800

Definition at line 1145 of file uv_pack.cc.

Referenced by clear(), Occupancy(), blender::geometry::pack_island_xatlas(), and trace_triangle().

bitmap_scale_reciprocal

float blender::geometry::Occupancy::bitmap_scale_reciprocal = 1.0f

Definition at line 1146 of file uv_pack.cc.

Referenced by blender::geometry::find_best_fit_for_island(), increase_scale(), Occupancy(), and trace_triangle().

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The documentation for this class was generated from the following file:

• uv_pack.cc