impeller::RectanglePacker Class Reference

Packs rectangles into a specified area without rotating them. More...

#include <rectangle_packer.h>

Inheritance diagram for impeller::RectanglePacker:

Public Member Functions
virtual	~RectanglePacker ()
virtual bool	AddRect (int width, int height, IPoint16 *loc)=0
	Attempt to add a rect without moving already placed rectangles. More...
virtual Scalar	PercentFull () const =0
	Returns how much area has been filled with rectangles. More...
virtual void	Reset ()=0
	Empty out all previously added rectangles. More...

Static Public Member Functions
static std::shared_ptr< RectanglePacker >	Factory (int width, int height)
	Return an empty packer with area specified by width and height. More...

Protected Member Functions
	RectanglePacker (int width, int height)
int	width () const
int	height () const

Detailed Description

Packs rectangles into a specified area without rotating them.

Definition at line 27 of file rectangle_packer.h.

Constructor & Destructor Documentation

~RectanglePacker()

virtual impeller::RectanglePacker::~RectanglePacker ( )

inlinevirtual

Definition at line 34 of file rectangle_packer.h.

{}

RectanglePacker()

impeller::RectanglePacker::RectanglePacker ( int  width, int  height  )

inlineprotected

Definition at line 61 of file rectangle_packer.h.

                                         : width_(width), height_(height) {
    FML_DCHECK(width >= 0);
    FML_DCHECK(height >= 0);
  }

References height(), and width().

Member Function Documentation

AddRect()

virtual bool impeller::RectanglePacker::AddRect ( int  width, int  height, IPoint16 *  loc  )

pure virtual

Attempt to add a rect without moving already placed rectangles.

Parameters

[in]	width	The width of the rectangle to add.
[in]	height	The height of the rectangle to add.
[out]	loc	If successful, will be set to the position of the upper-left corner of the rectangle.

Returns

Return true on success; false on failure.

Implemented in impeller::SkylineRectanglePacker.

Factory()

std::shared_ptr< RectanglePacker > impeller::RectanglePacker::Factory ( int  width, int  height  )

static

Return an empty packer with area specified by width and height.

Definition at line 175 of file rectangle_packer.cc.

                                                                      {
  return std::make_shared<SkylineRectanglePacker>(width, height);
}

References height(), and width().

Referenced by impeller::ComputeNextAtlasSize(), impeller::testing::TEST(), and impeller::testing::TEST_P().

height()

int impeller::RectanglePacker::height ( ) const

inlineprotected

Definition at line 67 of file rectangle_packer.h.

{ return height_; }

Referenced by impeller::SkylineRectanglePacker::AddRect(), Factory(), impeller::SkylineRectanglePacker::PercentFull(), and RectanglePacker().

PercentFull()

virtual Scalar impeller::RectanglePacker::PercentFull ( ) const

pure virtual

Returns how much area has been filled with rectangles.

Returns

Percentage as a decimal between 0.0 and 1.0

Implemented in impeller::SkylineRectanglePacker.

Reset()

virtual void impeller::RectanglePacker::Reset ( )

pure virtual

Empty out all previously added rectangles.

Implemented in impeller::SkylineRectanglePacker.

width()

int impeller::RectanglePacker::width ( ) const

inlineprotected

Definition at line 66 of file rectangle_packer.h.

{ return width_; }

Referenced by impeller::SkylineRectanglePacker::AddRect(), Factory(), impeller::SkylineRectanglePacker::PercentFull(), RectanglePacker(), and impeller::SkylineRectanglePacker::Reset().

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

• impeller/typographer/rectangle_packer.h
• impeller/typographer/rectangle_packer.cc