| … | |
… | |
| 641 | =item scale $width_factor, $height_factor, $img |
641 | =item scale $width_factor, $height_factor, $img |
| 642 | |
642 | |
| 643 | Scales the image by the given factors in horizontal |
643 | Scales the image by the given factors in horizontal |
| 644 | (C<$width>) and vertical (C<$height>) direction. |
644 | (C<$width>) and vertical (C<$height>) direction. |
| 645 | |
645 | |
| 646 | If only one factor is give, it is used for both directions. |
646 | If only one factor is given, it is used for both directions. |
| 647 | |
647 | |
| 648 | If no factors are given, scales the image to the window size without |
648 | If no factors are given, scales the image to the window size without |
| 649 | keeping aspect. |
649 | keeping aspect. |
| 650 | |
650 | |
| 651 | =item resize $width, $height, $img |
651 | =item resize $width, $height, $img |
| … | |
… | |
| 776 | =item rotate $center_x, $center_y, $degrees, $img |
776 | =item rotate $center_x, $center_y, $degrees, $img |
| 777 | |
777 | |
| 778 | Rotates the image clockwise by C<$degrees> degrees, around the point at |
778 | Rotates the image clockwise by C<$degrees> degrees, around the point at |
| 779 | C<$center_x> and C<$center_y> (specified as factor of image width/height). |
779 | C<$center_x> and C<$center_y> (specified as factor of image width/height). |
| 780 | |
780 | |
| 781 | Example: rotate the image by 90 degrees around it's center. |
781 | Example: rotate the image by 90 degrees around its center. |
| 782 | |
782 | |
| 783 | rotate 0.5, 0.5, 90, keep { load "$HOME/mybg.png" } |
783 | rotate 0.5, 0.5, 90, keep { load "$HOME/mybg.png" } |
| 784 | |
784 | |
| 785 | =cut |
785 | =cut |
| 786 | |
786 | |
| … | |
… | |
| 885 | $img |
885 | $img |
| 886 | } |
886 | } |
| 887 | |
887 | |
| 888 | =item muladd $mul, $add, $img # EXPERIMENTAL |
888 | =item muladd $mul, $add, $img # EXPERIMENTAL |
| 889 | |
889 | |
| 890 | First multipliesthe pixels by C<$mul>, then adds C<$add>. This cna be used |
890 | First multiplies the pixels by C<$mul>, then adds C<$add>. This can be used |
| 891 | to implement brightness and contrast at the same time, with a wider value |
891 | to implement brightness and contrast at the same time, with a wider value |
| 892 | range than contrast and brightness operators. |
892 | range than contrast and brightness operators. |
| 893 | |
893 | |
| 894 | Due to numerous bugs in XRender implementations, it can also introduce a |
894 | Due to numerous bugs in XRender implementations, it can also introduce a |
| 895 | number of visual artifacts. |
895 | number of visual artifacts. |
