#include "BLI_math_vector.h"
#include <cstring>

Macros
#define	__MATH_GEOM_INLINE_C__
#define	SMALL_NUMBER 1.e-8f

Functions
MINLINE float	cross_tri_v2 (const float v1[2], const float v2[2], const float v3[2])
MINLINE float	area_tri_signed_v2 (const float v1[2], const float v2[2], const float v3[2])
MINLINE float	area_tri_v2 (const float v1[2], const float v2[2], const float v3[2])
MINLINE float	area_squared_tri_v2 (const float v1[2], const float v2[2], const float v3[2])
MINLINE void	axis_dominant_v3 (int r_axis_a, int r_axis_b, const float axis[3])
MINLINE float	axis_dominant_v3_max (int r_axis_a, int r_axis_b, const float axis[3])
MINLINE int	axis_dominant_v3_single (const float vec[3])
MINLINE int	axis_dominant_v3_ortho_single (const float vec[3])
MINLINE int	max_axis_v3 (const float vec[3])
MINLINE int	min_axis_v3 (const float vec[3])
MINLINE int	poly_to_tri_count (const int poly_count, const int corner_count)
MINLINE float	plane_point_side_v3 (const float plane[4], const float co[3])
MINLINE float	shell_angle_to_dist (const float angle)
MINLINE float	shell_v3v3_normalized_to_dist (const float a[3], const float b[3])
MINLINE float	shell_v2v2_normalized_to_dist (const float a[2], const float b[2])
MINLINE float	shell_v3v3_mid_normalized_to_dist (const float a[3], const float b[3])
MINLINE float	shell_v2v2_mid_normalized_to_dist (const float a[2], const float b[2])

Macro Definition Documentation

◆ __MATH_GEOM_INLINE_C__

#define __MATH_GEOM_INLINE_C__

Definition at line 10 of file math_geom_inline.cc.

◆ SMALL_NUMBER

#define SMALL_NUMBER 1.e-8f

Definition at line 17 of file math_geom_inline.cc.

Referenced by shell_angle_to_dist(), shell_v2v2_mid_normalized_to_dist(), shell_v2v2_normalized_to_dist(), shell_v3v3_mid_normalized_to_dist(), and shell_v3v3_normalized_to_dist().

Function Documentation

◆ area_squared_tri_v2()

MINLINE float area_squared_tri_v2	(	const float	v1[2],
		const float	v2[2],
		const float	v3[2] )

Definition at line 36 of file math_geom_inline.cc.

References area_tri_signed_v2(), MINLINE, and v2.

◆ area_tri_signed_v2()

MINLINE float area_tri_signed_v2	(	const float	v1[2],
		const float	v2[2],
		const float	v3[2] )

Definition at line 26 of file math_geom_inline.cc.

References MINLINE, and v2.

Referenced by area_squared_tri_v2(), and area_tri_v2().

◆ area_tri_v2()

MINLINE float area_tri_v2	(	const float	v1[2],
		const float	v2[2],
		const float	v3[2] )

Definition at line 31 of file math_geom_inline.cc.

References area_tri_signed_v2(), fabsf, MINLINE, and v2.

Referenced by BKE_mesh_remap_calc_faces_from_mesh(), computeBindWeights(), IsectPT2Df_limit(), M_Geometry_area_tri(), project_paint_bleed_add_face_user(), blender::geometry::ReverseUVSampler::sample(), test_polyfill_area(), test_polyfill_area_tri_nonzero(), and transform_point_by_tri_v3().

◆ axis_dominant_v3()

MINLINE void axis_dominant_v3	(	int *	r_axis_a,
		int *	r_axis_b,
		const float	axis[3] )

Get the 2 dominant axis values, 0==X, 1==Y, 2==Z.

Definition at line 42 of file math_geom_inline.cc.

References fabsf, and MINLINE.

Referenced by barycentric_differentials_from_position(), barycentric_weights(), and uvedit_unwrap_cube_project().

◆ axis_dominant_v3_max()

MINLINE float axis_dominant_v3_max	(	int *	r_axis_a,
		int *	r_axis_b,
		const float	axis[3] )

Same as axis_dominant_v3 but return the max value.

Definition at line 62 of file math_geom_inline.cc.

References fabsf, and MINLINE.

◆ axis_dominant_v3_ortho_single()

MINLINE int axis_dominant_v3_ortho_single ( const float vec[3] )

The dominant axis of an orthogonal vector.

Definition at line 91 of file math_geom_inline.cc.

References fabsf, MINLINE, x, y, and z().

Referenced by ED_view3d_cursor3d_position_rotation().

◆ axis_dominant_v3_single()

MINLINE int axis_dominant_v3_single ( const float vec[3] )

Get the single dominant axis value, 0==X, 1==Y, 2==Z.

Definition at line 83 of file math_geom_inline.cc.

References fabsf, MINLINE, x, y, and z().

Referenced by calc_initial_placement_point_from_view(), distribute_grid(), isect_ray_tri_watertight_v3_precalc(), and ortho_v3_v3().

◆ cross_tri_v2()

MINLINE float cross_tri_v2	(	const float	v1[2],
		const float	v2[2],
		const float	v3[2] )

Scalar cross product of a 2D triangle.

Equivalent to area * 2.
Useful for checking polygon winding (a negative value is clockwise).

Definition at line 21 of file math_geom_inline.cc.

References MINLINE, and v2.

Referenced by barycentric_weights_v2(), barycentric_weights_v2_clamped(), barycentric_weights_v2_persp(), BLI_polyfill_beautify_quad_rotate_calc_ex(), BLI_polyfill_edge_calc_rotate_beauty__area(), bm_loop_collapse_is_degenerate(), color_sample_remove_cost(), project_face_winding_init(), TEST(), TEST(), and test_polyfill_winding().

◆ max_axis_v3()

MINLINE int max_axis_v3 ( const float vec[3] )

Definition at line 99 of file math_geom_inline.cc.

References MINLINE, x, y, and z().

◆ min_axis_v3()

MINLINE int min_axis_v3 ( const float vec[3] )

Definition at line 107 of file math_geom_inline.cc.

References MINLINE, x, y, and z().

Referenced by view3d_ruler_pick().

◆ plane_point_side_v3()

MINLINE float plane_point_side_v3	(	const float	plane[4],
		const float	co[3] )

Definition at line 121 of file math_geom_inline.cc.

References dot_v3v3(), and MINLINE.

Referenced by BKE_mesh_mirror_bisect_on_mirror_plane_for_modifier(), bmo_bisect_plane_exec(), camera_to_frame_view_cb(), clip_segment_v3_plane(), clip_segment_v3_plane_n(), closest_to_plane_normalized_v3(), closest_to_plane_v3(), dist_signed_squared_to_plane_v3(), dist_signed_to_plane_v3(), dist_squared_to_plane_v3(), blender::ed::sculpt_paint::filter_above_plane_factors(), blender::ed::sculpt_paint::filter_above_plane_factors(), blender::ed::sculpt_paint::filter_below_plane_factors(), blender::ed::sculpt_paint::filter_below_plane_factors(), blender::ed::sculpt_paint::brushes::filter_plane_side_factors(), blender::ed::sculpt_paint::gesture::is_affected(), isect_aabb_planes_v3(), isect_point_planes_v3(), isect_point_planes_v3_negated(), plane_point_test_v3(), tree_intersect_plane_test(), and view3d_clipping_test().

◆ poly_to_tri_count()

MINLINE int poly_to_tri_count	(	int	poly_count,
		int	corner_count )

Simple function to either:

Calculate how many triangles needed from the total number of polygons + loops.
Calculate the first triangle index from the polygon index & that polygons loop-start.

Parameters

poly_count	The number of polygons or polygon-index (3+ sided faces, 1-2 sided give incorrect results).
corner_count	The number of corners (also called loop-index).

Definition at line 115 of file math_geom_inline.cc.

References BLI_assert, and MINLINE.

Referenced by blender::draw::accumululate_material_counts_mesh(), blender::ed::object::bake_targets_populate_pixels_color_attributes(), BKE_editmesh_looptris_calc_ex(), BKE_editmesh_looptris_calc_with_partial_ex(), BKE_mesh_runtime_corner_tris_len(), bm_mesh_calc_tessellation__single_threaded(), BM_mesh_calc_tessellation_beauty(), BMD_mesh_intersection(), bpy_bmesh_calc_loop_triangles(), C_BVHTree_FromBMesh(), blender::draw::pbvh::create_tri_index_mesh(), blender::ed::transform::createTransEditVerts(), blender::draw::extract_edituv_tris_mesh(), blender::render::texturemargin::generate_margin(), heat_bone_weighting(), Freestyle::BlenderFileLoader::insertShapeNode(), blender::geometry::boolean::mesh_bm_concat(), mesh_calc_tri_tessface(), mesh_faces_to_scratch(), blender::draw::mesh_render_data_create(), mesh_tessface_calc(), RE_bake_pixels_populate(), and stats_mesheval().

◆ shell_angle_to_dist()

MINLINE float shell_angle_to_dist ( float angle )

Useful to calculate an even width shell, by taking the angle between 2 planes. The return value is a scale on the offset. no angle between planes is 1.0, as the angle between the 2 planes approaches 180d the distance gets very high, 180d would be inf, but this case isn't valid.

Definition at line 126 of file math_geom_inline.cc.

References angle(), cosf, fabsf, MINLINE, SMALL_NUMBER, and UNLIKELY.

Referenced by blender::ed::transform::Bend(), and BM_mesh_wireframe().