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Diffstat (limited to 'Build/source/libs/gd/libgd-2.1.0/src/gdfx.h')
-rw-r--r-- | Build/source/libs/gd/libgd-2.1.0/src/gdfx.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/Build/source/libs/gd/libgd-2.1.0/src/gdfx.h b/Build/source/libs/gd/libgd-2.1.0/src/gdfx.h new file mode 100644 index 00000000000..cf83d3eb46e --- /dev/null +++ b/Build/source/libs/gd/libgd-2.1.0/src/gdfx.h @@ -0,0 +1,71 @@ +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef GDFX_H +#define GDFX_H 1 + +/* im MUST be square, but can have any size. Returns a new image + of width and height radius * 2, in which the X axis of + the original has been remapped to theta (angle) and the Y axis + of the original has been remapped to rho (distance from center). + This is known as a "polar coordinate transform." */ + +BGD_DECLARE(gdImagePtr) gdImageSquareToCircle(gdImagePtr im, int radius); + +/* Draws the text 'top' and 'bottom' on 'im', curved along the + edge of a circle of radius 'radius', with its + center at 'cx' and 'cy'. 'top' is written clockwise + along the top; 'bottom' is written counterclockwise + along the bottom. 'textRadius' determines the 'height' + of each character; if 'textRadius' is 1/2 of 'radius', + characters extend halfway from the edge to the center. + 'fillPortion' varies from 0 to 1.0, with useful values + from about 0.4 to 0.9, and determines how much of the + 180 degrees of arc assigned to each section of text + is actually occupied by text; 0.9 looks better than + 1.0 which is rather crowded. 'font' is a freetype + font; see gdImageStringFT. 'points' is passed to the + freetype engine and has an effect on hinting; although + the size of the text is determined by radius, textRadius, + and fillPortion, you should pass a point size that + 'hints' appropriately -- if you know the text will be + large, pass a large point size such as 24.0 to get the + best results. 'fgcolor' can be any color, and may have + an alpha component, do blending, etc. + + Returns 0 on success, or an error string. */ + +BGD_DECLARE(char *) gdImageStringFTCircle( + gdImagePtr im, + int cx, + int cy, + double radius, + double textRadius, + double fillPortion, + char *font, + double points, + char *top, + char *bottom, + int fgcolor); + +/* 2.0.16: + * Sharpen function added on 2003-11-19 + * by Paul Troughton (paul<dot>troughton<at>ieee<dot>org) + * Simple 3x3 convolution kernel + * Makes use of seperability + * Faster, but less flexible, than full-blown unsharp masking + * pct is sharpening percentage, and can be greater than 100 + * Silently does nothing to non-truecolor images + * Silently does nothing for pct<0, as not a useful blurring function + * Leaves transparency/alpha-channel untouched + */ + +BGD_DECLARE(void) gdImageSharpen (gdImagePtr im, int pct); + +#endif /* GDFX_H */ + + +#ifdef __cplusplus +} +#endif |