gem::BasicShapeDrawer Class Reference

Renders basic geometric shapes onto a Canvas. More...

Inheritance diagram for gem::BasicShapeDrawer:

Collaboration diagram for gem::BasicShapeDrawer:

Classes
struct	__allow_private_constructor

Public Member Functions
void	renderShapes (XyF translationFactor=XyF(0.0f, 0.0f), XyF scaleFactor=XyF(1.0f, 1.0f))
	Renders the shapes.
unsigned int	createTexture (const void *pImage, unsigned int width, unsigned int height, EColorFormat format)
	Creates a texture.
unsigned int	createTexture (const String &fileName, EImageFileFormat fileFormat, EColorFormat format)
	Creates a texture by file name.
void	deleteTexture (unsigned int textureId)
	Deletes a texture.
void	drawCircle (const XyF &center, float radius, unsigned int color, bool bFilled=false)
	Draws a circle.
void	drawLine (const XyF &start, const XyF &end, unsigned int color=0, float thickness=1.f)
	Draws a line.
void	drawTexturedRectangle (unsigned int nTextureId, const XyF &topLeft, const XyF &botRight, unsigned int color=0, bool bFilled=false, float thickness=1.f)
	Draws a textured rectangle.
void	drawRectangle (const XyF &topLeft, const XyF &botRight, unsigned int color=0, bool bFilled=false, float thickness=1.f)
	Draws a rectangle.
void	drawRoundedRectangle (const XyF &topLeft, const XyF &botRight, unsigned int color=0, bool bFilled=false, float thickness=1.f)
	Draws a rounded rectangle.
void	drawText (const String &text, XyF position, TextState style)
	Draws text with style.
int	getTextWidth (const String &text, TextState style)
	Gets the text width.
int	getTextAscent (TextState style)
	Gets the text ascent.
int	getTextDescent (TextState style)
	Gets the text descent.

Static Public Member Functions
static StrongPointer< BasicShapeDrawer >	produce (StrongPointer< Canvas > canvas)
	Creates a BasicShapeDrawer object.

Protected Types
using	Base = ApiObject<IBasicShapesRenderer, false>
	The base class.

Detailed Description

Renders basic geometric shapes onto a Canvas.

Provides utilities to draw lines, circles, and polygons for overlays, debugging, or visualization.Shapes are rendered into a Canvas and displayed within a MapView.

Member Function Documentation

createTexture() [1/2]

unsigned int gem::BasicShapeDrawer::createTexture ( const String & fileName, EImageFileFormat fileFormat, EColorFormat format )

inline

Creates a texture by file name.

Parameters

fileName	The file name
fileFormat	The file format
format	The color format

Returns

The texture ID

createTexture() [2/2]

unsigned int gem::BasicShapeDrawer::createTexture ( const void * pImage, unsigned int width, unsigned int height, EColorFormat format )

inline

Creates a texture.

Parameters

pImage	The image
width	The width
height	The height
format	The color format

Returns

The texture ID

deleteTexture()

void gem::BasicShapeDrawer::deleteTexture ( unsigned int textureId )

inline

Deletes a texture.

Parameters

textureId

The texture ID

drawCircle()

void gem::BasicShapeDrawer::drawCircle ( const XyF & center, float radius, unsigned int color, bool bFilled = false )

inline

Draws a circle.

Parameters

center	The center
radius	The radius
color	The color
bFilled	The flag indicating whether the circle is filled

drawLine()

void gem::BasicShapeDrawer::drawLine ( const XyF & start, const XyF & end, unsigned int color = 0, float thickness = 1.f )

inline

Draws a line.

Parameters

start	The start
end	The end
color	The color
thickness	The thickness of the line

drawRectangle()

void gem::BasicShapeDrawer::drawRectangle ( const XyF & topLeft, const XyF & botRight, unsigned int color = 0, bool bFilled = false, float thickness = 1.f )

inline

Draws a rectangle.

Parameters

topLeft	The top-left
botRight	The bottom-right
color	The color
bFilled	The flag indicating whether the rectangle is filled
thickness	The thickness of the rectangle

drawRoundedRectangle()

void gem::BasicShapeDrawer::drawRoundedRectangle ( const XyF & topLeft, const XyF & botRight, unsigned int color = 0, bool bFilled = false, float thickness = 1.f )

inline

Draws a rounded rectangle.

Parameters

topLeft	The top-left
botRight	The bottom-right
color	The color
bFilled	The flag indicating whether the rectangle is filled
thickness	The thickness of the rectangle

drawText()

void gem::BasicShapeDrawer::drawText ( const String & text, XyF position, TextState style )

inline

Draws text with style.

Parameters

text	The text
position	The position
style	The text style

drawTexturedRectangle()

void gem::BasicShapeDrawer::drawTexturedRectangle ( unsigned int nTextureId, const XyF & topLeft, const XyF & botRight, unsigned int color = 0, bool bFilled = false, float thickness = 1.f )

inline

Draws a textured rectangle.

Parameters

nTextureId	The texture ID
topLeft	The top-left
botRight	The bottom-right
color	The color
bFilled	The flag indicating whether the rectangle is filled
thickness	The thickness of the rectangle

getTextAscent()

int gem::BasicShapeDrawer::getTextAscent ( TextState style )

inline

Gets the text ascent.

Parameters

style

The text style

Returns

The text ascent

getTextDescent()

int gem::BasicShapeDrawer::getTextDescent ( TextState style )

inline

Gets the text descent.

Parameters

style

The text style

Returns

The text descent

getTextWidth()

int gem::BasicShapeDrawer::getTextWidth ( const String & text, TextState style )

inline

Gets the text width.

Parameters

text	The text
style	The text style

Returns

The text width

produce()

StrongPointer< BasicShapeDrawer > gem::BasicShapeDrawer::produce ( StrongPointer< Canvas > canvas )

inlinestatic

Creates a BasicShapeDrawer object.

Parameters

canvas

The canvas

Returns

The BasicShapeDrawer object

renderShapes()

void gem::BasicShapeDrawer::renderShapes ( XyF translationFactor = XyF( 0.0f, 0.0f ), XyF scaleFactor = XyF( 1.0f, 1.0f ) )

inline

Renders the shapes.

Parameters

translationFactor	The translation factor
scaleFactor	The scale factor