imagefilledarc

Description

bool imagefilledarc ( resource image, int cx, int cy, int w, int h, int s, int e, int color, int style )

imagefilledarc() draws a partial ellipse centered at cx, cy (top left is 0, 0) in the image represented by image. Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки. W and h specifies the ellipse's width and height respectively while the start and end points are specified in degrees indicated by the s and e arguments. style is a bitwise OR of the following possibilities:

1. IMG_ARC_PIE

2. IMG_ARC_CHORD

3. IMG_ARC_NOFILL

4. IMG_ARC_EDGED

IMG_ARC_PIE and IMG_ARC_CHORD are mutually exclusive; IMG_ARC_CHORD just connects the starting and ending angles with a straight line, while IMG_ARC_PIE produces a rounded edge. IMG_ARC_NOFILL indicates that the arc or chord should be outlined, not filled. IMG_ARC_EDGED, used together with IMG_ARC_NOFILL, indicates that the beginning and ending angles should be connected to the center - this is a good way to outline (rather than fill) a 'pie slice'.

Пример 1. Creating a 3D looking pie <?php // this example is provided by poxy at klam dot is // create image $image = imagecreate ( 100 , 100 ); // allocate some solors $white     = imagecolorallocate ( $image , 0xFF , 0xFF , 0xFF ); $gray      = imagecolorallocate ( $image , 0xC0 , 0xC0 , 0xC0 ); $darkgray = imagecolorallocate ( $image , 0x90 , 0x90 , 0x90 ); $navy      = imagecolorallocate ( $image , 0x00 , 0x00 , 0x80 ); $darknavy = imagecolorallocate ( $image , 0x00 , 0x00 , 0x50 ); $red       = imagecolorallocate ( $image , 0xFF , 0x00 , 0x00 ); $darkred   = imagecolorallocate ( $image , 0x90 , 0x00 , 0x00 ); // make the 3D effect for ( $i = 60 ; $i > 50 ; $i --) {     imagefilledarc ( $image , 50 , $i , 100 , 50 , 0 , 45 , $darknavy , IMG_ARC_PIE );    imagefilledarc ( $image , 50 , $i , 100 , 50 , 45 , 75 , $darkgray , IMG_ARC_PIE );    imagefilledarc ( $image , 50 , $i , 100 , 50 , 75 , 360 , $darkred , IMG_ARC_PIE ); } imagefilledarc ( $image , 50 , 50 , 100 , 50 , 0 , 45 , $navy , IMG_ARC_PIE ); imagefilledarc ( $image , 50 , 50 , 100 , 50 , 45 , 75 , $gray , IMG_ARC_PIE ); imagefilledarc ( $image , 50 , 50 , 100 , 50 , 75 , 360 , $red , IMG_ARC_PIE ); // flush image header ( 'Content-type: image/png' ); imagepng ( $image ); imagedestroy ( $image ); ?>