images

Enumerations
enum class	ResizeAlgorirm { avir , lanczos }
	A very high quality image resize using a bank of sinc function-based fractional delay filters. More...
enum	BlendMode {   Normal , Lighten , Darken , Multiply ,   Average , Add , Subtract , Difference ,   Negation , Screen , Exclusion , Overlay ,   SoftLight , HardLight , ColorDodge , ColorBurn ,   LinearDodge , LinearBurn , LinearLight , VividLight ,   PinLight , HardMix , Reflect , Glow ,   Phoenix }
	Blending modes for applyBlend. More...

Functions
void	applyVignette (juce::Image &img, float amount, float radius, float falloff, juce::ThreadPool *threadPool=nullptr)
	Apply vignette. More...
void	applySepia (juce::Image &img, juce::ThreadPool *threadPool=nullptr)
	Make it look old. More...
void	applyGreyScale (juce::Image &img, juce::ThreadPool *threadPool=nullptr)
	Converts image to B/W, heavier weighting towards greens. More...
void	applySoften (juce::Image &img, juce::ThreadPool *threadPool=nullptr)
	Softens an image. More...
void	applySharpen (juce::Image &img, juce::ThreadPool *threadPool=nullptr)
	Sharpens an image. More...
void	applyGamma (juce::Image &img, float gamma, juce::ThreadPool *threadPool=nullptr)
void	applyInvert (juce::Image &img, juce::ThreadPool *threadPool=nullptr)
	Inverts colours of an image. More...
void	applyContrast (juce::Image &img, float contrast, juce::ThreadPool *threadPool=nullptr)
	Adjust contrast of an image. More...
void	applyBrightnessContrast (juce::Image &img, float brightness, float contrast, juce::ThreadPool *threadPool=nullptr)
	Adjust brightness and contrast of an image. More...
void	applyHueSaturationLightness (juce::Image &img, float hue, float saturation, float lightness, juce::ThreadPool *threadPool=nullptr)
	Adjust hue, saturation and lightness of an image. More...
void	applyStackBlur (juce::Image &img, int radius)
	A very fast blur. More...
juce::Image	applyResize (const juce::Image &img, int width, int height, ResizeAlgorirm resizeAlgorirm=ResizeAlgorirm::avir)
juce::Image	applyResize (const juce::Image &img, float factor, ResizeAlgorirm resizeAlgorirm=ResizeAlgorirm::avir)
void	applyGradientMap (juce::Image &img, const juce::ColourGradient &gradient, juce::ThreadPool *threadPool=nullptr)
	GradientMap a image. More...
void	applyGradientMap (juce::Image &img, const juce::Colour c1, const juce::Colour c2, juce::ThreadPool *threadPool=nullptr)
void	applyColour (juce::Image &img, juce::Colour c, juce::ThreadPool *threadPool=nullptr)
	Set an image to a solid colour. More...
void	applyBlend (juce::Image &dst, const juce::Image &src, BlendMode mode, float alpha=1.0f, juce::Point< int > position={}, juce::ThreadPool *threadPool=nullptr)
	Blend two images. More...
void	applyBlend (juce::Image &dst, BlendMode mode, juce::Colour c, juce::ThreadPool *threadPool=nullptr)
	Blend two images. More...

Detailed Description

Enumeration Type Documentation

ResizeAlgorirm

enum ResizeAlgorirm

strong

A very high quality image resize using a bank of sinc function-based fractional delay filters.

Enumerator
avir
lanczos

BlendMode

enum BlendMode

Blending modes for applyBlend.

Enumerator
Normal
Lighten
Darken
Multiply
Average
Add
Subtract
Difference
Negation
Screen
Exclusion
Overlay
SoftLight
HardLight
ColorDodge
ColorBurn
LinearDodge
LinearBurn
LinearLight
VividLight
PinLight
HardMix
Reflect
Glow
Phoenix

Function Documentation

applyVignette()

void applyVignette	(	juce::Image &	img,
		float	amount,
		float	radius,
		float	falloff,
		juce::ThreadPool *	threadPool = nullptr
	)

Apply vignette.

Parameters

amount	Amount to darken outside of vignette. 0 no darkening. 1 is black.
radius	Size of vignette. 1 size of image. 0 is 0 size.
falloff	Relative size of inner boundry of vignette 0,1

applySepia()

void applySepia	(	juce::Image &	img,
		juce::ThreadPool *	threadPool = nullptr
	)

Make it look old.

applyGreyScale()

void applyGreyScale	(	juce::Image &	img,
		juce::ThreadPool *	threadPool = nullptr
	)

Converts image to B/W, heavier weighting towards greens.

applySoften()

void applySoften	(	juce::Image &	img,
		juce::ThreadPool *	threadPool = nullptr
	)

Softens an image.

applySharpen()

void applySharpen	(	juce::Image &	img,
		juce::ThreadPool *	threadPool = nullptr
	)

Sharpens an image.

applyGamma()

void applyGamma	(	juce::Image &	img,
		float	gamma,
		juce::ThreadPool *	threadPool = nullptr
	)

applyInvert()

void applyInvert	(	juce::Image &	img,
		juce::ThreadPool *	threadPool = nullptr
	)

Inverts colours of an image.

applyContrast()

void applyContrast	(	juce::Image &	img,
		float	contrast,
		juce::ThreadPool *	threadPool = nullptr
	)

Adjust contrast of an image.

Parameters

contrast

Amount to adjust contrast. Negative values increase, positive values increase

applyBrightnessContrast()

void applyBrightnessContrast	(	juce::Image &	img,
		float	brightness,
		float	contrast,
		juce::ThreadPool *	threadPool = nullptr
	)

Adjust brightness and contrast of an image.

Parameters

brightness	Amount to adjust brightness -100,100
contrast	Amount to adjust contrast -100,100

applyHueSaturationLightness()

void applyHueSaturationLightness	(	juce::Image &	img,
		float	hue,
		float	saturation,
		float	lightness,
		juce::ThreadPool *	threadPool = nullptr
	)

Adjust hue, saturation and lightness of an image.

Parameters

hue	Amount to adjust hue -180,180
saturation	Amount to adjust saturation 0,200
lightness	Amount to adjust lightness -100,100

applyStackBlur()

void applyStackBlur	(	juce::Image &	img,
		int	radius
	)

A very fast blur.

This is a compromise between Gaussian Blur and Box blur. It creates much better looking blurs than Box Blur, but is 7x faster than some Gaussian Blur implementations.

Parameters

radius

from 2 to 254

applyResize() [1/2]

juce::Image applyResize	(	const juce::Image &	img,
		int	width,
		int	height,
		ResizeAlgorirm	resizeAlgorirm = ResizeAlgorirm::avir
	)

applyResize() [2/2]

juce::Image applyResize	(	const juce::Image &	img,
		float	factor,
		ResizeAlgorirm	resizeAlgorirm = ResizeAlgorirm::avir
	)

applyGradientMap() [1/2]

void applyGradientMap	(	juce::Image &	img,
		const juce::ColourGradient &	gradient,
		juce::ThreadPool *	threadPool = nullptr
	)

GradientMap a image.

Brightness gets remapped to colour on a gradient.

applyGradientMap() [2/2]

void applyGradientMap	(	juce::Image &	img,
		const juce::Colour	c1,
		const juce::Colour	c2,
		juce::ThreadPool *	threadPool = nullptr
	)

applyColour()

void applyColour	(	juce::Image &	img,
		juce::Colour	c,
		juce::ThreadPool *	threadPool = nullptr
	)

Set an image to a solid colour.

applyBlend() [1/2]

void applyBlend	(	juce::Image &	dst,
		const juce::Image &	src,
		BlendMode	mode,
		float	alpha = 1.0f,
		juce::Point< int >	position = {},
		juce::ThreadPool *	threadPool = nullptr
	)

Blend two images.

applyBlend() [2/2]

void applyBlend	(	juce::Image &	dst,
		BlendMode	mode,
		juce::Colour	c,
		juce::ThreadPool *	threadPool = nullptr
	)

Blend two images.