Gecko [ nrupathungauniversityblr.ac.in ]

Name	Size	Permission
msinttypes	[ DIR ]	drwxr-xr-x
CMakeLists.txt	3.23 KB	-rwxr-xr-x
COPYING	2.25 KB	-rwxr-xr-x
Makefile.am	1.96 KB	-rwxr-xr-x
annotate.c	4.38 KB	-rwxr-xr-x
bdftogd	3.91 KB	-rwxr-xr-x
bmp.h	2.39 KB	-rwxr-xr-x
circletexttest.c	1.49 KB	-rwxr-xr-x
config.h.cmake	3.58 KB	-rwxr-xr-x
demoin.png	9.79 KB	-rwxr-xr-x
depcomp	11.84 KB	-rwxr-xr-x
entities.h	4.81 KB	-rwxr-xr-x
entities.html	41.11 KB	-rwxr-xr-x
entities.tcl	1.35 KB	-rwxr-xr-x
fontconfigtest.c	1.34 KB	-rwxr-xr-x
fontsizetest.c	2.3 KB	-rwxr-xr-x
fontwheeltest.c	3.23 KB	-rwxr-xr-x
gd.c	89.58 KB	-rwxr-xr-x
gd.h	50.14 KB	-rwxr-xr-x
gd2copypal.c	1.25 KB	-rwxr-xr-x
gd2time.c	1.19 KB	-rwxr-xr-x
gd2togif.c	939 B	-rwxr-xr-x
gd2topng.c	1.38 KB	-rwxr-xr-x
gd_bmp.c	25.78 KB	-rwxr-xr-x
gd_color.c	798 B	-rwxr-xr-x
gd_color.h	189 B	-rwxr-xr-x
gd_color_map.c	22.71 KB	-rwxr-xr-x
gd_color_map.h	478 B	-rwxr-xr-x
gd_color_map_test.c	570 B	-rwxr-xr-x
gd_color_match.c	1.49 KB	-rwxr-xr-x
gd_crop.c	5.75 KB	-rwxr-xr-x
gd_errors.h	1.47 KB	-rwxr-xr-x
gd_filename.c	6.41 KB	-rwxr-xr-x
gd_filter.c	21 KB	-rwxr-xr-x
gd_gd.c	7.1 KB	-rwxr-xr-x
gd_gd2.c	25.85 KB	-rwxr-xr-x
gd_gif_in.c	14.79 KB	-rwxr-xr-x
gd_gif_out.c	41 KB	-rwxr-xr-x
gd_intern.h	1.95 KB	-rwxr-xr-x
gd_interpolation.c	59.19 KB	-rwxr-xr-x
gd_io.c	3.42 KB	-rwxr-xr-x
gd_io.h	3.05 KB	-rwxr-xr-x
gd_io_dp.c	7.95 KB	-rwxr-xr-x
gd_io_file.c	2.41 KB	-rwxr-xr-x
gd_io_ss.c	2.66 KB	-rwxr-xr-x
gd_io_stream.cxx	4.11 KB	-rwxr-xr-x
gd_io_stream.h	3.63 KB	-rwxr-xr-x
gd_jpeg.c	34.5 KB	-rwxr-xr-x
gd_matrix.c	7.93 KB	-rwxr-xr-x
gd_nnquant.c	15 KB	-rwxr-xr-x
gd_nnquant.h	527 B	-rwxr-xr-x
gd_png.c	30.58 KB	-rwxr-xr-x
gd_rotate.c	12.25 KB	-rwxr-xr-x
gd_security.c	692 B	-rwxr-xr-x
gd_ss.c	1.27 KB	-rwxr-xr-x
gd_tga.c	8.61 KB	-rwxr-xr-x
gd_tga.h	1.66 KB	-rwxr-xr-x
gd_tiff.c	25.85 KB	-rwxr-xr-x
gd_topal.c	55.18 KB	-rwxr-xr-x
gd_transform.c	1.48 KB	-rwxr-xr-x
gd_version.c	827 B	-rwxr-xr-x
gd_wbmp.c	6.54 KB	-rwxr-xr-x
gd_webp.c	4.25 KB	-rwxr-xr-x
gd_xbm.c	5.68 KB	-rwxr-xr-x
gdcache.c	5.14 KB	-rwxr-xr-x
gdcache.h	2.83 KB	-rwxr-xr-x
gdcmpgif.c	1.86 KB	-rwxr-xr-x
gddemo.c	5.42 KB	-rwxr-xr-x
gdfontg.c	109.84 KB	-rwxr-xr-x
gdfontg.h	553 B	-rwxr-xr-x
gdfontl.c	104.83 KB	-rwxr-xr-x
gdfontl.h	551 B	-rwxr-xr-x
gdfontmb.c	76.33 KB	-rwxr-xr-x
gdfontmb.h	519 B	-rwxr-xr-x
gdfonts.c	66.55 KB	-rwxr-xr-x
gdfonts.h	515 B	-rwxr-xr-x
gdfontt.c	36.82 KB	-rwxr-xr-x
gdfontt.h	546 B	-rwxr-xr-x
gdft.c	49.23 KB	-rwxr-xr-x
gdfx.c	13.52 KB	-rwxr-xr-x
gdfx.h	2.34 KB	-rwxr-xr-x
gdhelpers.c	1.51 KB	-rwxr-xr-x
gdhelpers.h	2.31 KB	-rwxr-xr-x
gdkanji.c	11.97 KB	-rwxr-xr-x
gdparttopng.c	1.23 KB	-rwxr-xr-x
gdpp.cxx	6.43 KB	-rwxr-xr-x
gdpp.h	50.94 KB	-rwxr-xr-x
gdtables.c	4.67 KB	-rwxr-xr-x
gdtest.c	10.27 KB	-rwxr-xr-x
gdtestft.c	5.54 KB	-rwxr-xr-x
gdtopng.c	1.01 KB	-rwxr-xr-x
gdxpm.c	4.64 KB	-rwxr-xr-x
gifanimtest.c	682 B	-rwxr-xr-x
giftogd2.c	1.12 KB	-rwxr-xr-x
jisx0208.h	73.71 KB	-rwxr-xr-x
pngtogd.c	1.03 KB	-rwxr-xr-x
pngtogd2.c	1.23 KB	-rwxr-xr-x
snprintf.c	585 B	-rwxr-xr-x
testac.c	4.14 KB	-rwxr-xr-x
testtr.c	1.33 KB	-rwxr-xr-x
wbmp.c	6.18 KB	-rwxr-xr-x
wbmp.h	1.2 KB	-rwxr-xr-x
webpng.c	6.44 KB	-rwxr-xr-x

Code Editor : gd_rotate.c

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */

#include "gd.h"
#include "gd_intern.h"
#include <math.h>

/*
 * Rotate function Added on 2003/12
 * by Pierre-Alain Joye (pierre@php.net)
 **/
/* Begin rotate function */
#ifdef ROTATE_PI
#undef ROTATE_PI
#endif /* ROTATE_PI */

typedef int (BGD_STDCALL *FuncPtr)(gdImagePtr, int, int);

#define ROTATE_DEG2RAD  3.1415926535897932384626433832795/180
void gdImageSkewX (gdImagePtr dst, gdImagePtr src, int uRow, int iOffset, double dWeight, int clrBack, int ignoretransparent)
{
	int i, r, g, b, a, clrBackR, clrBackG, clrBackB, clrBackA;
	FuncPtr f;

int pxlOldLeft, pxlLeft=0, pxlSrc;

/* Keep clrBack as color index if required */
	if (src->trueColor) {
		pxlOldLeft = clrBack;
		f = gdImageGetTrueColorPixel;
	} else {
		pxlOldLeft = clrBack;
		clrBackR = gdImageRed(src, clrBack);
		clrBackG = gdImageGreen(src, clrBack);
		clrBackB = gdImageBlue(src, clrBack);
		clrBackA = gdImageAlpha(src, clrBack);
		clrBack =  gdTrueColorAlpha(clrBackR, clrBackG, clrBackB, clrBackA);
		f = gdImageGetPixel;
	}

for (i = 0; i < iOffset; i++) {
		gdImageSetPixel (dst, i, uRow, clrBack);
	}

if (i < dst->sx) {
		gdImageSetPixel (dst, i, uRow, clrBack);
	}

for (i = 0; i < src->sx; i++) {
		pxlSrc = f (src,i,uRow);

r = (int)(gdImageRed(src,pxlSrc) * dWeight);
		g = (int)(gdImageGreen(src,pxlSrc) * dWeight);
		b = (int)(gdImageBlue(src,pxlSrc) * dWeight);
		a = (int)(gdImageAlpha(src,pxlSrc) * dWeight);

if (r>255) {
			r = 255;
		}

if (g>255) {
			g = 255;
		}

if (b>255) {
			b = 255;
		}

if (a>127) {
			a = 127;
		}

pxlLeft = gdTrueColorAlpha(r, g, b, a);

r = gdImageRed(src,pxlSrc)   - (r - gdImageRed(src,pxlOldLeft));
		g = gdImageGreen(src,pxlSrc) - (g - gdImageGreen(src,pxlOldLeft));
		b = gdImageBlue(src,pxlSrc)  - (b - gdImageBlue(src,pxlOldLeft));
		a = gdImageAlpha(src,pxlSrc) - (a - gdImageAlpha(src,pxlOldLeft));

if (r>255) {
			r = 255;
		}

if (g>255) {
			g = 255;
		}

if (b>255) {
			b = 255;
		}

if (a>127) {
			a = 127;
		}

if (ignoretransparent && pxlSrc == dst->transparent) {
			pxlSrc = dst->transparent;
		} else {
			pxlSrc = gdImageColorAllocateAlpha(dst, r, g, b, a);

if (pxlSrc == -1) {
				pxlSrc = gdImageColorClosestAlpha(dst, r, g, b, a);
			}
		}

if ((i + iOffset >= 0) && (i + iOffset < dst->sx)) {
			gdImageSetPixel (dst, i+iOffset, uRow,  pxlSrc);
		}

pxlOldLeft = pxlLeft;
	}

i += iOffset;

if (i < dst->sx) {
		gdImageSetPixel (dst, i, uRow, pxlLeft);
	}

gdImageSetPixel (dst, iOffset, uRow, clrBack);

i--;

while (++i < dst->sx) {
		gdImageSetPixel (dst, i, uRow, clrBack);
	}
}

void gdImageSkewY (gdImagePtr dst, gdImagePtr src, int uCol, int iOffset, double dWeight, int clrBack, int ignoretransparent)
{
	int i, iYPos=0, r, g, b, a;
	FuncPtr f;
	int pxlOldLeft, pxlLeft=0, pxlSrc;

if (src->trueColor) {
		f = gdImageGetTrueColorPixel;
	} else {
		f = gdImageGetPixel;
	}

for (i = 0; i<=iOffset; i++) {
		gdImageSetPixel (dst, uCol, i, clrBack);
	}
	r = (int)((double)gdImageRed(src,clrBack) * dWeight);
	g = (int)((double)gdImageGreen(src,clrBack) * dWeight);
	b = (int)((double)gdImageBlue(src,clrBack) * dWeight);
	a = (int)((double)gdImageAlpha(src,clrBack) * dWeight);

pxlOldLeft = gdImageColorAllocateAlpha(dst, r, g, b, a);

for (i = 0; i < src->sy; i++) {
		pxlSrc = f (src, uCol, i);
		iYPos = i + iOffset;

r = (int)((double)gdImageRed(src,pxlSrc) * dWeight);
		g = (int)((double)gdImageGreen(src,pxlSrc) * dWeight);
		b = (int)((double)gdImageBlue(src,pxlSrc) * dWeight);
		a = (int)((double)gdImageAlpha(src,pxlSrc) * dWeight);

if (r>255) {
        	r = 255;
		}

if (g>255) {
			g = 255;
		}

if (b>255) {
    			b = 255;
		}

if (a>127) {
			a = 127;
		}

pxlLeft = gdTrueColorAlpha(r, g, b, a);

if (r>255) {
        	r = 255;
		}

if (g>255) {
			g = 255;
		}

if (b>255) {
    			b = 255;
		}

if (a>127) {
			a = 127;
		}

if (ignoretransparent && pxlSrc == dst->transparent) {
			pxlSrc = dst->transparent;
		} else {
			pxlSrc = gdImageColorAllocateAlpha(dst, r, g, b, a);

if (pxlSrc == -1) {
				pxlSrc = gdImageColorClosestAlpha(dst, r, g, b, a);
			}
		}

if ((iYPos >= 0) && (iYPos < dst->sy)) {
			gdImageSetPixel (dst, uCol, iYPos, pxlSrc);
		}

pxlOldLeft = pxlLeft;
	}

i = iYPos;
	if (i < dst->sy) {
		gdImageSetPixel (dst, uCol, i, pxlLeft);
	}

i--;
	while (++i < dst->sy) {
		gdImageSetPixel (dst, uCol, i, clrBack);
	}
}

/* Rotates an image by 90 degrees (counter clockwise) */
gdImagePtr gdImageRotate90 (gdImagePtr src, int ignoretransparent)
{
	int uY, uX;
	int c,r,g,b,a;
	gdImagePtr dst;
	FuncPtr f;

if (src->trueColor) {
		f = gdImageGetTrueColorPixel;
	} else {
		f = gdImageGetPixel;
	}
	dst = gdImageCreateTrueColor(src->sy, src->sx);
	if (dst != NULL) {
		int old_blendmode = dst->alphaBlendingFlag;
		dst->alphaBlendingFlag = 0;

dst->transparent = src->transparent;

gdImagePaletteCopy (dst, src);

for (uY = 0; uY<src->sy; uY++) {
			for (uX = 0; uX<src->sx; uX++) {
				c = f (src, uX, uY);
				if (!src->trueColor) {
					r = gdImageRed(src,c);
					g = gdImageGreen(src,c);
					b = gdImageBlue(src,c);
					a = gdImageAlpha(src,c);
					c = gdTrueColorAlpha(r, g, b, a);
				}
				if (ignoretransparent && c == dst->transparent) {
					gdImageSetPixel(dst, uY, (dst->sy - uX - 1), dst->transparent);
				} else {
					gdImageSetPixel(dst, uY, (dst->sy - uX - 1), c);
				}
			}
		}
		dst->alphaBlendingFlag = old_blendmode;
	}

return dst;
}

/* Rotates an image by 180 degrees (counter clockwise) */
gdImagePtr gdImageRotate180 (gdImagePtr src, int ignoretransparent)
{
	int uY, uX;
	int c,r,g,b,a;
	gdImagePtr dst;
	FuncPtr f;

if (src->trueColor) {
		f = gdImageGetTrueColorPixel;
	} else {
		f = gdImageGetPixel;
	}
	dst = gdImageCreateTrueColor(src->sx, src->sy);

if (dst != NULL) {
		int old_blendmode = dst->alphaBlendingFlag;
		dst->alphaBlendingFlag = 0;

dst->transparent = src->transparent;

gdImagePaletteCopy (dst, src);

if (ignoretransparent && c == dst->transparent) {
					gdImageSetPixel(dst, (dst->sx - uX - 1), (dst->sy - uY - 1), dst->transparent);
				} else {
					gdImageSetPixel(dst, (dst->sx - uX - 1), (dst->sy - uY - 1), c);
				}
			}
		}
		dst->alphaBlendingFlag = old_blendmode;
	}

return dst;
}

/* Rotates an image by 270 degrees (counter clockwise) */
gdImagePtr gdImageRotate270 (gdImagePtr src, int ignoretransparent)
{
	int uY, uX;
	int c,r,g,b,a;
	gdImagePtr dst;
	FuncPtr f;

if (src->trueColor) {
		f = gdImageGetTrueColorPixel;
	} else {
		f = gdImageGetPixel;
	}
	dst = gdImageCreateTrueColor (src->sy, src->sx);

if (dst != NULL) {
		int old_blendmode = dst->alphaBlendingFlag;
		dst->alphaBlendingFlag = 0;

dst->transparent = src->transparent;

gdImagePaletteCopy (dst, src);

if (ignoretransparent && c == dst->transparent) {
					gdImageSetPixel(dst, (dst->sx - uY - 1), uX, dst->transparent);
				} else {
					gdImageSetPixel(dst, (dst->sx - uY - 1), uX, c);
				}
			}
		}
		dst->alphaBlendingFlag = old_blendmode;
	}

return dst;
}

gdImagePtr gdImageRotate45 (gdImagePtr src, double dAngle, int clrBack, int ignoretransparent)
{
	gdImagePtr dst1,dst2,dst3;
	double dRadAngle, dSinE, dTan, dShear;
	double dOffset;     /* Variable skew offset */
	int u, iShear, newx, newy;
	int clrBackR, clrBackG, clrBackB, clrBackA;

/* See GEMS I for the algorithm details */
	dRadAngle = dAngle * ROTATE_DEG2RAD; /* Angle in radians */
	dSinE = sin (dRadAngle);
	dTan = tan (dRadAngle / 2.0);

newx = (int)(src->sx + src->sy * fabs(dTan));
	newy = src->sy;

/* 1st shear */
	dst1 = gdImageCreateTrueColor(newx, newy);
	/******* Perform 1st shear (horizontal) ******/
	if (dst1 == NULL) {
		return NULL;
	}
#ifdef HAVE_GD_BUNDLED
	dst1->alphaBlendingFlag = gdEffectReplace;
#else
	gdImageAlphaBlending(dst1, 0);
#endif
	if (dAngle == 0.0) {
		/* Returns copy of src */
		gdImageCopy (dst1, src,0,0,0,0,src->sx,src->sy);
		return dst1;
	}

gdImagePaletteCopy (dst1, src);

if (ignoretransparent) {
		if (gdImageTrueColor(src)) {
			dst1->transparent = src->transparent;
		} else {

dst1->transparent = gdTrueColorAlpha(gdImageRed(src, src->transparent), gdImageBlue(src, src->transparent), gdImageGreen(src, src->transparent), 127);
		}
	}

for (u = 0; u < dst1->sy; u++) {
		if (dTan >= 0.0) {
			dShear = ((double)(u + 0.5)) * dTan;
		} else {
			dShear = ((double)(u - dst1->sy) + 0.5) * dTan;
		}

iShear = (int)floor(dShear);
		gdImageSkewX(dst1, src, u, iShear, (dShear - iShear), clrBack, ignoretransparent);
	}

/*
	The 1st shear may use the original clrBack as color index
	Convert it once here
	*/
	if(!src->trueColor) {
		clrBackR = gdImageRed(src, clrBack);
		clrBackG = gdImageGreen(src, clrBack);
		clrBackB = gdImageBlue(src, clrBack);
		clrBackA = gdImageAlpha(src, clrBack);
		clrBack =  gdTrueColorAlpha(clrBackR, clrBackG, clrBackB, clrBackA);
	}
	/* 2nd shear */
	newx = dst1->sx;

if (dSinE > 0.0) {
		dOffset = (src->sx-1) * dSinE;
	} else {
		dOffset = -dSinE *  (src->sx - newx);
	}

newy = (int) ((double) src->sx * fabs( dSinE ) + (double) src->sy * cos (dRadAngle))+1;

dst2 = gdImageCreateTrueColor(newx, newy);
	if (dst2 == NULL) {
		gdImageDestroy(dst1);
		return NULL;
	}

#ifdef HAVE_GD_BUNDLED
	dst2->alphaBlendingFlag = gdEffectReplace;
#else
	gdImageAlphaBlending(dst2, 0);
#endif

if (ignoretransparent) {
		dst2->transparent = dst1->transparent;
	}

for (u = 0; u < dst2->sx; u++, dOffset -= dSinE) {
		iShear = (int)floor (dOffset);
		gdImageSkewY(dst2, dst1, u, iShear, (dOffset - (double)iShear), clrBack, ignoretransparent);
	}

/* 3rd shear */
	gdImageDestroy(dst1);

newx = (int) ((double)src->sy * fabs (dSinE) + (double)src->sx * cos (dRadAngle)) + 1;
	newy = dst2->sy;

dst3 = gdImageCreateTrueColor(newx, newy);
	if (dst3 == NULL) {
		gdImageDestroy(dst2);
		return NULL;
	}

#ifdef HAVE_GD_BUNDLED
	dst3->alphaBlendingFlag = gdEffectReplace;
#else
	gdImageAlphaBlending(dst3, 0);
#endif

if (ignoretransparent) {
		dst3->transparent = dst2->transparent;
	}

if (dSinE >= 0.0) {
		dOffset = (double)(src->sx - 1) * dSinE * -dTan;
	} else {
		dOffset = dTan * ((double)(src->sx - 1) * -dSinE + (double)(1 - newy));
	}

for (u = 0; u < dst3->sy; u++, dOffset += dTan) {
		int iShear = (int)floor(dOffset);
		gdImageSkewX(dst3, dst2, u, iShear, (dOffset - iShear), clrBack, ignoretransparent);
	}

gdImageDestroy(dst2);

return dst3;
}

gdImagePtr gdImageRotate (gdImagePtr src, double dAngle, int clrBack, int ignoretransparent)
{
	gdImagePtr pMidImg;
	gdImagePtr rotatedImg;

if (src == NULL) {
		return NULL;
	}

if (!gdImageTrueColor(src) && (clrBack < 0 || clrBack>=gdImageColorsTotal(src))) {
		return NULL;
	}

while (dAngle >= 360.0) {
		dAngle -= 360.0;
	}

while (dAngle < 0) {
		dAngle += 360.0;
	}

if (dAngle == 90.00) {
		return gdImageRotate90(src, ignoretransparent);
	}
	if (dAngle == 180.00) {
		return gdImageRotate180(src, ignoretransparent);
	}
	if(dAngle == 270.00) {
		return gdImageRotate270 (src, ignoretransparent);
	}

if ((dAngle > 45.0) && (dAngle <= 135.0)) {
		pMidImg = gdImageRotate90 (src, ignoretransparent);
		dAngle -= 90.0;
	} else if ((dAngle > 135.0) && (dAngle <= 225.0)) {
		pMidImg = gdImageRotate180 (src, ignoretransparent);
		dAngle -= 180.0;
	} else if ((dAngle > 225.0) && (dAngle <= 315.0)) {
		pMidImg = gdImageRotate270 (src, ignoretransparent);
		dAngle -= 270.0;
	} else {
		return gdImageRotate45 (src, dAngle, clrBack, ignoretransparent);
	}

if (pMidImg == NULL) {
		return NULL;
	}

rotatedImg = gdImageRotate45 (pMidImg, dAngle, clrBack, ignoretransparent);
	gdImageDestroy(pMidImg);

return rotatedImg;
}
/* End Rotate function */

${this.title}

Code Editor : gd_rotate.c