PHP Class Horde_Image, horde

Author: Chuck Hagenbuch ([email protected])

Author: Michael J. Rubinsky ([email protected])

Author: Jan Schneider ([email protected])

Public Methods

Method	Description
arcPoints ( integer $r, integer $start, integer $end ) : array	Returns point coordinates at the limits of an arc.
brightness ( string $color ) : integer	Returns the brightness of a color.
circlePoint ( float $degrees, integer $diameter ) : array	Returns an x,y pair on circle, assuming center is 0,0.
getColor ( string $color ) : integer[]	Normalizes an HTML color.
getFontSize ( $fontsize )	Returns the point size for an HTML font size name.
getHexColor ( string $colorname ) : string	Returns the hexadecimal representation of an HTML color name.
getRGB ( string $colorname ) : array	Returns the RGB values for an HTML color name.
grayscalePixel ( integer[] $originalPixel ) : integer[]	Turns an RGB value into grayscale.
grayscaleValue ( integer $r, integer $g, integer $b ) : integer	Calculates the grayscale value of a color.
modifyColor ( string $color, integer $factor = 17 ) : string	Calculates a lighter (or darker) version of a color.
moreIntenseColor ( string $color, integer $factor = 17 ) : string	Calculates a more intense version of a color.

Returns point coordinates at the limits of an arc.

public static arcPoints ( integer $r, integer $start, integer $end ) : array
$r	integer	The radius of the arc.
$start	integer	The starting angle.
$end	integer	The ending angle.
return	array	The start point (x1,y1), end point (x2,y2), and anchor point (x3,y3).

Returns the brightness of a color.

public static brightness ( string $color ) : integer
$color	string	An HTML color, e.g.: #ffffcc.
return	integer	The brightness on a scale of 0 to 255.

Returns an x,y pair on circle, assuming center is 0,0.

public static circlePoint ( float $degrees, integer $diameter ) : array
$degrees	float	The degrees of arc to get the point for.
$diameter	integer	The diameter of the circle.
return	array	(x coordinate, y coordinate) of the point.

Normalizes an HTML color.

public static getColor ( string $color ) : integer[]
$color	string	An HTML color, e.g.: #ffffcc or #ffc.
return	integer[]	Array with three elements: red, green, and blue.

Returns the point size for an HTML font size name.

public static getFontSize ( $fontsize )

Returns the hexadecimal representation of an HTML color name.

public static getHexColor ( string $colorname ) : string
$colorname	string	A color name.
return	string	The hex representation of the color.

Returns the RGB values for an HTML color name.

public static getRGB ( string $colorname ) : array
$colorname	string	A color name.
return	array	An array of RGB values.

Turns an RGB value into grayscale.

public static grayscalePixel ( integer[] $originalPixel ) : integer[]
$originalPixel	integer[]	A hash with 'red', 'green', and 'blue' values.
return	integer[]	A hash with 'red', 'green', and 'blue' values for the corresponding gray color.

Calculates the grayscale value of a color.

public static grayscaleValue ( integer $r, integer $g, integer $b ) : integer
$r	integer	A red value.
$g	integer	A green value.
$b	integer	A blue value.
return	integer	The grayscale value of the color.

Calculates a lighter (or darker) version of a color.

public static modifyColor ( string $color, integer $factor = 17 ) : string
$color	string	An HTML color, e.g.: #ffffcc.
$factor	integer	The brightness difference between -0xff and +0xff. Plus values raise the brightness, negative values reduce it.
return	string	A modified HTML color.

Calculates a more intense version of a color.

public static moreIntenseColor ( string $color, integer $factor = 17 ) : string
$color	string	An HTML color, e.g.: #ffffcc.
$factor	integer	The intensity difference between -0xff and +0xff. Plus values raise the intensity, negative values reduce it.
return	string	A more intense HTML color.