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DrawStrings_SingleColor

This is Filter Equivalent. This function may be present in generated code, but should not be used in hand-written code.

Header:	FIL.h
Namespace:	fis
Module:	FoundationLite

Draws strings (text) on an image with a single color.

Syntax

void fis::DrawStrings_SingleColor
(
	const fil::Image& inImage,
	ftl::Conditional<const ftl::Array<ftl::Conditional<ftl::String> > &> inStrings,
	ftl::Conditional<const ftl::Array<ftl::Conditional<fil::Location> > &> inLocations,
	ftl::Optional<const fil::CoordinateSystem2D&> inLocationAlignment,
	const fil::Anchor2D::Type inLocationAnchor,
	const fil::Pixel& inColor,
	const fil::DrawingStyle& inDrawingStyle,
	float inSize,
	float inOrientationAngle,
	const bool inForceRgb,
	ftl::Optional<const fil::Pixel&> inBackgroundColor,
	fil::Image& outImage
)

Parameters

Name	Type	Range	Default	Description
inImage	const Image&			Input image
inStrings	Conditional<const Array<Conditional<String> > &>		{ }	Strings to be drawn.
inLocations	Conditional<const Array<Conditional<Location> > &>		{ }	Center position of strings
inLocationAlignment	Optional<const CoordinateSystem2D&>		NIL
inLocationAnchor	const Anchor2D::Type		MiddleCenter
inColor	const Pixel&
inDrawingStyle	const DrawingStyle&		DrawingStyle ( DrawingMode: HighQuality Opacity: 1.0f Thickness: 1.0f Filled: False PointShape: Nil PointSize: 1.0f )
inSize	float	10.0 -	16.0f	Height of a character in pixels
inOrientationAngle	float		0.0f	Orientation of text in degrees
inForceRgb	const bool		True	Filter will convert monochromatic image to RGB if needed
inBackgroundColor	Optional<const Pixel&>		NIL	Color of pixels drawn on image in text row
outImage	Image&			Output image

In-place Processing

This function supports in-place data processing - you can pass the same reference to inImage and outImage

Description

The operation draws a strings on the inImage aligning the inLocationAnchor location of the text at the inLocations of the inImage. The height of the font is fixed and equals 16 pixels.

Hints

If you want to draw on an empty background, use EmptyImage function before.
Define inStrings. This will be the primitives to be drawn.
For each of the strings also define its location by setting the inLocations input.
If the locations provided on the inLocations input are in a local coordinate system, also set the inLocationAlignment input.
Set inLocationAnchor do define how each of the strings should be aligned in relation to its location.
Define the font size by setting the inSize input. Recommended values are: 16, 32, 48, 64.
Define inColor. Please note, that on an N-channel image only first N components of the color will be used.
Set inForceRgb to True, if you want to get a 3-channel output regardless of what is on the input.
Set inDrawingStyle to control quality, opacity, thickness, filling, point shapes and sizes.

Examples

Example usage of the DrawStrings_SingleColor on an empty image.

Errors

List of possible exceptions:

Error type	Description
DomainError	String and location arrays do not match in DrawStrings_SingleColor.