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Stefano Azzolini
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Oct 16, 2014
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| <?php | ||
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| /** | ||
| * Pixeler | ||
| * | ||
| * UTF-8 Dot matrix renderer. | ||
| * | ||
| * @package pixeler | ||
| * @author lastguest@gmail.com | ||
| * @version 1.0 | ||
| * @copyright Stefano Azzolini - 2014 - http://dreamnoctis.com | ||
| */ | ||
|
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| namespace Pixeler; | ||
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| class Canvas { | ||
| protected $screen; | ||
| protected $width; | ||
| protected $height; | ||
| protected $charHeight; | ||
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| public function __construct($w,$h){ | ||
| $this->screen = new Matrix($this->width=$w,$this->height=$h); | ||
| $this->charHeight = ceil($h/4); | ||
| } | ||
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| public function clear($clear=true){ | ||
| static $ESC; | ||
| $ESC or $ESC = chr(27); | ||
| $this->screen->clear(); | ||
| $h = $this->charHeight +1; | ||
| echo $ESC,'[',$h,'A'; | ||
| } | ||
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| public function setPixel($x,$y,$c=1){ | ||
| $this->screen->setPixel($x,$y,$c); | ||
| } | ||
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| public function width(){ | ||
| return $this->width; | ||
| } | ||
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| public function height(){ | ||
| return $this->height; | ||
| } | ||
|
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| public function __toString(){ | ||
| return $this->screen->render(); | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| <?php | ||
|
|
||
| /** | ||
| * Pixeler | ||
| * | ||
| * UTF-8 Dot matrix renderer. | ||
| * | ||
| * @package pixeler | ||
| * @author lastguest@gmail.com | ||
| * @version 1.0 | ||
| * @copyright Stefano Azzolini - 2014 - http://dreamnoctis.com | ||
| */ | ||
|
|
||
| namespace Pixeler; | ||
|
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| class Matrix { | ||
| protected $matrix = null, | ||
| $colors = null, | ||
| $width = 0, | ||
| $height = 0, | ||
| $size = 0, | ||
| $csize = 0; | ||
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| public function __construct($width,$height){ | ||
| $this->width = 2 * ($w2=ceil($width/2)); | ||
| $this->height = 4 * ($h2=ceil($height/4)); | ||
| $this->size = $this->width * $this->height; | ||
| $this->csize = $w2 * $h2; | ||
| $this->matrix = new \SplFixedArray($this->size); | ||
| $this->colors = new \SplFixedArray($this->csize); | ||
| } | ||
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| public function clearColors() { | ||
| $this->colors = new \SplFixedArray($this->csize); | ||
| } | ||
|
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| public function clear() { | ||
| $this->matrix = new \SplFixedArray($this->size); | ||
| $this->colors = new \SplFixedArray($this->csize); | ||
| } | ||
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| public function setPixel($x, $y, $value = true,$color = null){ | ||
| $y = (int)$y; $x = (int)$x; | ||
| if ( $x < $this->width && $y < $this->height) { | ||
| $this->matrix[$x + $y * $this->width] = !! $value; | ||
| $this->colors[$x>>1 + ($y>>2) * $this->width] = $color; | ||
| } | ||
| } | ||
|
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| public function getPixel($x, $y){ | ||
| $y = (int)$y; $x = (int)$x; | ||
| if ( $x < $this->width && $y < $this->height) { | ||
| return [ $this->matrix[$x + $y * $this->width], $this->colors[$x + $y * $this->width] ]; | ||
| } else { | ||
| return false; | ||
| } | ||
| } | ||
|
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| public function render(){ | ||
| $i = 0; | ||
| $w = $this->width; | ||
| $w2 = $this->width >> 1; | ||
| $h = $this->height; | ||
| $m = $this->matrix; | ||
| $c = $this->colors; | ||
| $ESC = chr(27); | ||
| ob_start(); | ||
| for ($y = 0, $cy = 0; $y < $h; $y += 4, $cy++){ | ||
| $cx = 0; $cy0 = $cy * $w2; | ||
| $y0 = $y * $w; $y1 = ($y + 1) * $w; $y2 = ($y + 2) * $w; $y3 = ($y + 3) * $w; | ||
| for ($x = 0; $x < $w; $x += 2, $cx++){ | ||
| $cell = 0; | ||
| $x1 = $x + 1; | ||
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| foreach([ | ||
| 0x01 => $x1 + $y3, | ||
| 0x02 => $x + $y3, | ||
| 0x04 => $x1 + $y2, | ||
| 0x08 => $x + $y2, | ||
| 0x10 => $x1 + $y1, | ||
| 0x20 => $x + $y1, | ||
| 0x40 => $x1 + $y0, | ||
| 0x80 => $x + $y0, | ||
| ] as $bit => $ofs) { | ||
| if (!empty($m[$ofs])) $cell |= $bit; | ||
| } | ||
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| $dots_r = 0x2800; | ||
|
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| if ($cell & 0x80) $dots_r |= 0x01; | ||
| if ($cell & 0x40) $dots_r |= 0x08; | ||
| if ($cell & 0x20) $dots_r |= 0x02; | ||
| if ($cell & 0x10) $dots_r |= 0x10; | ||
| if ($cell & 0x08) $dots_r |= 0x04; | ||
| if ($cell & 0x04) $dots_r |= 0x20; | ||
| if ($cell & 0x02) $dots_r |= 0x40; | ||
| if ($cell & 0x01) $dots_r |= 0x80; | ||
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| $dots_r_64 = $dots_r % 64; | ||
| $dots_r_4096 = $dots_r % 4096; | ||
|
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| // Print UTF-8 character and color | ||
| echo | ||
| $ESC.'[' . ($c[$cy0+$cx]?'38;5;'.$c[$cy0+$cx]:39).'m' | ||
| . chr(224 + (($dots_r - $dots_r_4096) >> 12 )) | ||
| . chr(128 + (($dots_r_4096 - $dots_r_64) >> 6 )) | ||
| . chr(128 + $dots_r_64); | ||
| } | ||
| echo $ESC."[0\n"; | ||
| } | ||
| $buffer = ob_get_contents(); | ||
| ob_end_clean(); | ||
| return $buffer; | ||
| } | ||
|
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| public function __toString(){ | ||
| return $this->render(); | ||
| } | ||
|
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| } |
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