imagesetstyle
An easier to manage thickness is, before to draw in the ellipse to play with 2 ellipse with different color :
<?php
imagefilledellipse ($this->image,60,42,57,57,$drawColor);
imagefilledellipse ($this->image,60,42,45,45,$backColor);
?>
The first line draw a filled ellipse with the wanted color, and the 2nd one, draw an ellipse with the background color from the same center, but is smaller.
The drawback of this method is that you erase everything in the middle of the ellipse.
imagesetthickness
(PHP 4 >= 4.0.6, PHP 5)
imagesetthickness — Set the thickness for line drawing
Description
bool imagesetthickness
( resource $image
, int $thickness
)
imagesetthickness() sets the thickness of the lines drawn when drawing rectangles, polygons, ellipses etc. etc. to thickness pixels.
Parameters
- image
-
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
- thickness
-
Thickness, in pixels.
Return Values
Returns TRUE on success or FALSE on failure.
Examples
Example #1 imagesetthickness() example
<?php
// Create a 200x100 image
$im = imagecreatetruecolor(200, 100);
$white = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);
$black = imagecolorallocate($im, 0x00, 0x00, 0x00);
// Set the background to be white
imagefilledrectangle($im, 0, 0, 299, 99, $white);
// Set the line thickness to 5
imagesetthickness($im, 5);
// Draw the rectangle
imagerectangle($im, 14, 14, 185, 85, $black);
// Output image to the browser
header('Content-Type: image/png');
imagepng($im);
imagedestroy($im);
?>
The above example will output something similar to:
Notes
Note: This function requires GD 2.0.1 or later (2.0.28 or later is recommended).
add a note
User Contributed Notesimagesetthickness
jean-raymond dot chauviere at gmail dot com
30-Jun-2009 08:20
30-Jun-2009 08:20
admin at circle14 dot net
02-Feb-2009 01:33
02-Feb-2009 01:33
Here is a custom function I wrote that addresses the line thickness issues with ellipses :
<?php
function draw_oval ($image, $pos_x, $pos_y, $elipse_width, $elipse_height, $color, $px_thick) {
$line = 0;
$thickness = $px_thick;
$elipse_w = $elipse_width;
$elipse_h = $elipse_height;
while ($line < $thickness) {
imageellipse($image, $pos_x, $pos_y, $elipse_w, $elipse_h, $color);
$line++;
$elipse_w--;
$elipse_h--;
}
}
?>
I hope you find this useful.
bpatru at gmail dot com
28-Sep-2008 08:01
28-Sep-2008 08:01
Apparently imagesetthickness doesn't work if antialiasing is set to true.
baldurien at bbnwn dot eu
12-Mar-2008 12:28
12-Mar-2008 12:28
The way that imagesetthickness works with imagerectangle() is pretty strange.
<?php
imagesetthickness(1);
imagerectangle($im, 10, 10, 50, 50, $red);
?>
This will draw a 41x41 square (because gd need the bottom right pixel, inclusive. 50 should get replaced by 49). This will "work" like:
<?php
imageline($im, 10, 10, 10, 50, $red);
imageline($im, 10, 10, 50, 10, $red);
imageline($im, 50, 10, 50, 50, $red);
imageline($im, 10, 50, 50, 50, $red);
?>
The second example:
<?php
imagesetthickness(2);
imagerectangle($im, 10, 10, 50, 50, $red);
?>
This will draw a 43x43 square because the border (thickness) is set to 2. *however* this is not a "regular" border of 2 pixels around the 41x41 original square!
On the left and right, there will be a thickness of 3, while there we be a thickness of 2.
If you take the imageline example, but set the thickness before to 2, this will *almost* do the trick: the left most pixel of the square will not be drawn.
To conclude:
1) do not forget that (width, height) of drawn rectangle is (x2-x1+1, y2-y1+1)
2) thickness is bad implemented (or at least, the behavior i s not documented) on rectangle, as the left/right thickness is not the wanted one.
3) 4*imageline() should do the trick, but after "patching" the top left pixel.
ab at cd dot com
27-Jun-2007 11:05
27-Jun-2007 11:05
Note: Also, for me (working under PHP 5.0.2) this function ONLY seems to work with imageline...