draw_select_buffer.cc File Reference

#include <cfloat>
#include "BLI_math_matrix.hh"
#include "MEM_guardedalloc.h"
#include "BLI_array_utils.h"
#include "BLI_bitmap.h"
#include "BLI_bitmap_draw_2d.h"
#include "BLI_math_matrix.h"
#include "BLI_rect.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_view3d_types.h"
#include "GPU_framebuffer.hh"
#include "GPU_select.hh"
#include "DEG_depsgraph.hh"
#include "DEG_depsgraph_query.hh"
#include "DRW_engine.hh"
#include "DRW_render.hh"
#include "DRW_select_buffer.hh"
#include "../engines/select/select_engine.hh"

Go to the source code of this file.

Classes
struct	PolyMaskData
struct	SelectReadData

Typedefs
using	int2

Functions
Buffer of select ID's
uint *	DRW_select_buffer_read (Depsgraph *depsgraph, ARegion *region, View3D *v3d, const rcti *rect, uint *r_buf_len)
Select Bitmap from ID's
Given a buffer of select ID's, fill in a booleans (true/false) per index. BLI_bitmap is used for memory efficiency.
uint *	DRW_select_buffer_bitmap_from_rect (Depsgraph *depsgraph, ARegion *region, View3D *v3d, const rcti *rect, uint *r_bitmap_len)
uint *	DRW_select_buffer_bitmap_from_circle (Depsgraph *depsgraph, ARegion *region, View3D *v3d, const int center[2], const int radius, uint *r_bitmap_len)
static void	drw_select_mask_px_cb (int x, int x_end, int y, void *user_data)
uint *	DRW_select_buffer_bitmap_from_poly (Depsgraph *depsgraph, ARegion *region, View3D *v3d, const Span< int2 > poly, const rcti *rect, uint *r_bitmap_len)
Find Single Select ID's
Given a buffer of select ID's, find the a single select id.
uint	DRW_select_buffer_sample_point (Depsgraph *depsgraph, ARegion *region, View3D *v3d, const int center[2])
static bool	select_buffer_test_fn (const void *__restrict value, void *__restrict userdata)
uint	DRW_select_buffer_find_nearest_to_point (Depsgraph *depsgraph, ARegion *region, View3D *v3d, const int center[2], const uint id_min, const uint id_max, uint *dist)
Object Utils
bool	DRW_select_buffer_elem_get (const uint sel_id, uint &r_elem, uint &r_base_index, char &r_elem_type)
uint	DRW_select_buffer_context_offset_for_object_elem (Depsgraph *depsgraph, Object *object, char elem_type)
Context
void	DRW_select_buffer_context_create (Depsgraph *depsgraph, const blender::Span< Base * > bases, short select_mode)

Detailed Description

Utilities to read id buffer created in select_engine.

Definition in file draw_select_buffer.cc.

Typedef Documentation

int2

using blender::int2

Definition at line 601 of file BLI_math_vector_types.hh.

Function Documentation

DRW_select_buffer_bitmap_from_circle()

uint * DRW_select_buffer_bitmap_from_circle	(	Depsgraph *	depsgraph,
		ARegion *	region,
		View3D *	v3d,
		const int	center[2],
		int	radius,
		uint *	r_bitmap_len )

Parameters

center	Circle center.
radius	Circle radius.
r_bitmap_len	Number of indices in the selection id buffer.

Returns

a BLI_bitmap the length of r_bitmap_len or NULL on failure.

Definition at line 177 of file draw_select_buffer.cc.

References BLI_assert, BLI_BITMAP_ENABLE, BLI_BITMAP_NEW, depsgraph, DRW_select_buffer_read(), DRW_select_engine_context_get(), SELECTID_Context::max_index_drawn_len, MEM_freeN(), rcti::xmax, rcti::xmin, rcti::ymax, and rcti::ymin.

Referenced by mesh_circle_select(), paint_facesel_circle_select(), and paint_vertsel_circle_select().

DRW_select_buffer_bitmap_from_poly()

uint * DRW_select_buffer_bitmap_from_poly	(	Depsgraph *	depsgraph,
		ARegion *	region,
		View3D *	v3d,
		const Span< int2 >	poly,
		const rcti *	rect,
		uint *	r_bitmap_len )

Definition at line 240 of file draw_select_buffer.cc.

References BLI_assert, BLI_bitmap_draw_2d_poly_v2i_n(), BLI_BITMAP_ENABLE, BLI_BITMAP_NEW, BLI_BITMAP_TEST, depsgraph, DRW_select_buffer_read(), DRW_select_engine_context_get(), drw_select_mask_px_cb(), i, SELECTID_Context::max_index_drawn_len, MEM_freeN(), PolyMaskData::px, PolyMaskData::width, rcti::xmax, rcti::xmin, rcti::ymax, and rcti::ymin.

DRW_select_buffer_bitmap_from_rect()

uint * DRW_select_buffer_bitmap_from_rect	(	Depsgraph *	depsgraph,
		ARegion *	region,
		View3D *	v3d,
		const rcti *	rect,
		uint *	r_bitmap_len )

Parameters

rect	The rectangle to sample indices from (min/max inclusive).

Returns

a BLI_bitmap the length of bitmap_len or NULL on failure.

Definition at line 141 of file draw_select_buffer.cc.

References BLI_assert, BLI_BITMAP_ENABLE, BLI_BITMAP_NEW, depsgraph, DRW_select_buffer_read(), DRW_select_engine_context_get(), SELECTID_Context::max_index_drawn_len, MEM_freeN(), rcti::xmax, and rcti::ymax.

Referenced by do_mesh_box_select(), do_paintface_box_select(), and do_paintvert_box_select().

DRW_select_buffer_context_create()

void DRW_select_buffer_context_create	(	Depsgraph *	depsgraph,
		const blender::Span< Base * >	bases,
		short	select_mode )

Definition at line 465 of file draw_select_buffer.cc.

References DEG_get_evaluated(), depsgraph, DRW_select_engine_context_get(), i, blender::Span< T >::index_range(), SELECTID_Context::objects, SELECTID_Context::persmat, Vector< T, InlineBufferCapacity, Allocator >::reinitialize(), SELECTID_Context::select_mode, blender::Span< T >::size(), and blender::MatBase< float, 4, 4 >::zero().

DRW_select_buffer_context_offset_for_object_elem()

uint DRW_select_buffer_context_offset_for_object_elem	(	Depsgraph *	depsgraph,
		Object *	object,
		char	elem_type )

Assume it is called right after DRW_select_buffer_bitmap_from_* so that the same evaluated object is used for drawing and as parameter to this function.

Definition at line 435 of file draw_select_buffer.cc.

References BLI_assert, DEG_get_evaluated(), depsgraph, DRW_select_engine_context_get(), ElemIndexRanges::edge, SELECTID_Context::elem_ranges, ElemIndexRanges::face, Map< Key, Value, InlineBufferCapacity, ProbingStrategy, Hash, IsEqual, Slot, Allocator >::lookup_default(), SCE_SELECT_EDGE, SCE_SELECT_FACE, SCE_SELECT_VERTEX, blender::IndexRange::start(), and ElemIndexRanges::vert.

Referenced by do_lasso_select_mesh(), do_mesh_box_select(), edbm_backbuf_check_and_select_edges(), edbm_backbuf_check_and_select_faces(), and edbm_backbuf_check_and_select_verts().

DRW_select_buffer_elem_get()

bool DRW_select_buffer_elem_get	(	const uint	sel_id,
		uint &	r_elem,
		uint &	r_base_index,
		char &	r_elem_type )

Definition at line 400 of file draw_select_buffer.cc.

References blender::IndexRange::contains(), DRW_select_engine_context_get(), ElemIndexRanges::edge, SELECTID_Context::elem_ranges, ElemIndexRanges::face, Vector< T, InlineBufferCapacity, Allocator >::first_index_of_try(), Map< Key, Value, InlineBufferCapacity, ProbingStrategy, Hash, IsEqual, Slot, Allocator >::items(), SELECTID_Context::objects, SCE_SELECT_EDGE, SCE_SELECT_FACE, SCE_SELECT_VERTEX, blender::IndexRange::start(), ElemIndexRanges::total, and ElemIndexRanges::vert.

Referenced by edbm_select_id_bm_elem_get().

DRW_select_buffer_find_nearest_to_point()

uint DRW_select_buffer_find_nearest_to_point	(	Depsgraph *	depsgraph,
		ARegion *	region,
		View3D *	v3d,
		const int	center[2],
		uint	id_min,
		uint	id_max,
		uint *	dist )

Find the selection id closest to center.

Parameters

dist	Use to initialize the distance, when found, this value is set to the distance of the selection that's returned.

Definition at line 350 of file draw_select_buffer.cc.

References abs, BLI_array_iter_spiral_square, BLI_rcti_init_pt_radius(), BLI_rcti_size_x(), data, depsgraph, DRW_select_buffer_read(), MEM_freeN(), select_buffer_test_fn(), rcti::xmax, and rcti::ymax.

Referenced by ED_mesh_pick_edge(), ED_mesh_pick_face(), ED_mesh_pick_vert(), EDBM_edge_find_nearest_ex(), EDBM_face_find_nearest_ex(), and EDBM_vert_find_nearest_ex().

DRW_select_buffer_read()

uint * DRW_select_buffer_read	(	Depsgraph *	depsgraph,
		ARegion *	region,
		View3D *	v3d,
		const rcti *	rect,
		uint *	r_buf_len )

Main function to read a block of pixels from the select frame buffer.

Definition at line 67 of file draw_select_buffer.cc.

References BLI_assert, BLI_rcti_compare(), BLI_rcti_is_empty(), BLI_rcti_isect(), BLI_rcti_size_x(), BLI_rcti_size_y(), depsgraph, DRW_draw_select_id(), DRW_engine_select_framebuffer_get(), DRW_engine_select_texture_get(), DRW_gpu_context_disable(), DRW_gpu_context_enable(), DRW_select_engine_context_get(), GPU_DATA_UINT, GPU_framebuffer_bind(), GPU_framebuffer_read_color(), GPU_framebuffer_restore(), GPU_select_buffer_stride_realign(), GPU_texture_height(), GPU_texture_width(), SELECTID_Context::is_dirty(), SELECTID_Context::max_index_drawn_len, MEM_malloc_arrayN(), ARegion::regiondata, ARegion::winx, ARegion::winy, rcti::xmax, rcti::xmin, rcti::ymax, and rcti::ymin.

Referenced by DRW_select_buffer_bitmap_from_circle(), DRW_select_buffer_bitmap_from_poly(), DRW_select_buffer_bitmap_from_rect(), DRW_select_buffer_find_nearest_to_point(), and DRW_select_buffer_sample_point().

DRW_select_buffer_sample_point()

uint DRW_select_buffer_sample_point	(	Depsgraph *	depsgraph,
		ARegion *	region,
		View3D *	v3d,
		const int	center[2] )

Samples a single pixel.

Definition at line 306 of file draw_select_buffer.cc.

References BLI_assert, depsgraph, DRW_select_buffer_read(), MEM_freeN(), ret, rcti::xmax, rcti::xmin, rcti::ymax, and rcti::ymin.

Referenced by ED_mesh_pick_edge(), ED_mesh_pick_face(), ED_mesh_pick_vert(), and EDBM_face_find_nearest_ex().

drw_select_mask_px_cb()

void drw_select_mask_px_cb ( int x, int x_end, int y, void * user_data )

static

Definition at line 229 of file draw_select_buffer.cc.

References BLI_BITMAP_ENABLE, data, i, x, and y.

Referenced by DRW_select_buffer_bitmap_from_poly().

select_buffer_test_fn()

bool select_buffer_test_fn ( const void *__restrict value, void *__restrict userdata )

static

Definition at line 337 of file draw_select_buffer.cc.

References data.

Referenced by DRW_select_buffer_find_nearest_to_point().