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See Release Notes

  • Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
  • Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
<?php namespace RedeyeVentures\GeoPattern;

use RedeyeVentures\GeoPattern\SVGElements\Polyline;
use RedeyeVentures\GeoPattern\SVGElements\Rectangle;
use RedeyeVentures\GeoPattern\SVGElements\Group;

class GeoPattern {

    protected $string;
    protected $baseColor;
    protected $color;
    protected $generator;

    protected $hash;
    protected $svg;

    protected $patterns = [
        'octogons',
        'overlapping_circles',
        'plus_signs',
        'xes',
        'sine_waves',
        'hexagons',
        'overlapping_rings',
        'plaid',
        'triangles',
        'squares',
        'concentric_circles',
        'diamonds',
        'tessellation',
        'nested_squares',
        'mosaic_squares',
        'triangles_rotated',
        'chevrons',
    ];
    const FILL_COLOR_DARK = '#222';
    const FILL_COLOR_LIGHT = '#ddd';
    const STROKE_COLOR = '#000';
    const STROKE_OPACITY = '0.02';
    const OPACITY_MIN = '0.02';
    const OPACITY_MAX = '0.15';

    function __construct($options=array())
    {
        // Set string if provided. If not, set default.
        if (isset($options['string'])) {
            $this->setString($options['string']);
        } else {
            $this->setString(time());
        }

        // Set base color if provided. If not, set default.
        if (isset($options['baseColor'])) {
            $this->setBaseColor($options['baseColor']);
        } else {
            $this->setBaseColor('#933c3c');
        }

        // Set color if provided.
        if (isset($options['color'])) {
            $this->setColor($options['color']);
        }

        // Set generator if provided. If not, leave null.
        if (isset($options['generator']))
            $this->setGenerator($options['generator']);

        $this->svg = new SVG();
    }

    // Fluent Interfaces
    public function setString($string)
    {
        $this->string = $string;
        $this->hash = sha1($this->string);
        return $this;
    }

    /**
     * @return string
     */
    public function getString()
    {
        return $this->string;
    }

    public function setBaseColor($baseColor)
    {
        if(preg_match('/^#[a-f0-9]{6}$/i', $baseColor)) //hex color is valid
        {
            $this->baseColor = $baseColor;
            return $this;
        }
        throw new \InvalidArgumentException("$baseColor is not a valid hex color.");
    }

    public function setColor($color)
    {
        if(preg_match('/^#[a-f0-9]{6}$/i', $color)) //hex color is valid
        {
            $this->color = $color;
            return $this;
        }
        throw new \InvalidArgumentException("$color is not a valid hex color.");
    }

    public function setGenerator($generator)
    {
        $generator = strtolower($generator);
        if (in_array($generator, $this->patterns) || is_null($generator)) {
            $this->generator = $generator;
            return $this;
        }
        throw new \InvalidArgumentException("$generator is not a valid generator type.");
    }

    public function toSVG()
    {
        $this->svg = new SVG();
        $this->generateBackground();
        $this->generatePattern();
        return (string) $this->svg;
    }

    public function toBase64()
    {
        return base64_encode($this->toSVG());
    }

    public function toDataURI()
    {
        return "data:image/svg+xml;base64,{$this->toBase64()}";
    }

    public function toDataURL()
    {
        return "url(\"{$this->toDataURI()}\")";
    }

    public function __toString() {
        return $this->toSVG();
    }

    // Generators
    protected function generateBackground()
    {
        $hueOffset = $this->map($this->hexVal(14, 3), 0, 4095, 0, 359);
        $satOffset = $this->hexVal(17, 1);
        $baseColor = $this->hexToHSL($this->baseColor);
        $color     = $this->color;

        $baseColor['h'] = $baseColor['h'] - $hueOffset;


        if ($satOffset % 2 == 0)
            $baseColor['s'] = $baseColor['s'] + $satOffset/100;
        else
            $baseColor['s'] = $baseColor['s'] - $satOffset/100;

        if (isset($color))
            $rgb = $this->hexToRGB($color);
        else
            $rgb = $this->hslToRGB($baseColor['h'], $baseColor['s'], $baseColor['l']);

        $this->svg->addRectangle(0, 0, "100%", "100%", ['fill' => "rgb({$rgb['r']}, {$rgb['g']}, {$rgb['b']})"]);
    }

    protected function generatePattern()
    {
        if (is_null($this->generator))
            $pattern = $this->patterns[$this->hexVal(20, 1)];
        else
            $pattern = $this->generator;

        $function = 'geo'.str_replace(' ', '', ucwords(str_replace('_', ' ', $pattern)));

        if (method_exists($this, $function))
            $this->$function();
    }

    // Pattern Makers
    protected function geoHexagons()
    {
        $scale = $this->hexVal(0, 1);
        $sideLength = $this->map($scale, 0, 15, 8, 60);
        $hexHeight = $sideLength * sqrt(3);
        $hexWidth = $sideLength * 2;
        $hex = $this->buildHexagonShape($sideLength);
        $this->svg->setWidth(($hexWidth * 3) + ($sideLength * 3))
            ->setHeight($hexHeight * 6);

        $i = 0;
        for ($y = 0; $y <= 5; $y++) {
            for ($x = 0; $x <= 5; $x++) {
                $val = $this->hexVal($i, 1);
                $dy = ($x % 2 == 0) ? ($y * $hexHeight) : ($y*$hexHeight + $hexHeight / 2);
                $opacity = $this->opacity($val);
                $fill = $this->fillColor($val);
                $styles = [
                    'stroke' => self::STROKE_COLOR,
                    'stroke-opacity' => self::STROKE_OPACITY,
                    'fill-opacity' => $opacity,
                    'fill' => $fill,
                ];

                $onePointFiveXSideLengthMinusHalfHexWidth = $x * $sideLength * 1.5 - $hexWidth / 2;
                $dyMinusHalfHexHeight = $dy - $hexHeight / 2;
                $this->svg->addPolyline($hex, array_merge($styles, ['transform' => "translate($onePointFiveXSideLengthMinusHalfHexWidth, $dyMinusHalfHexHeight)"]));

                // Add an extra one at top-right, for tiling.
                if ($x == 0) {
                    $onePointFiveSideLengthSixMinusHalfHexWidth = 6 * $sideLength * 1.5 - $hexWidth / 2;
                    $this->svg->addPolyline($hex, array_merge($styles, ['transform' => "translate($onePointFiveSideLengthSixMinusHalfHexWidth, $dyMinusHalfHexHeight)"]));
                }

                // Add an extra row at the end that matches the first row, for tiling.
                if ($y == 0) {
                    $dy2 = ($x % 2 == 0) ? (6 * $hexHeight) : (6 * $hexHeight + $hexHeight / 2);
                    $dy2MinusHalfHexHeight = $dy2 - $hexHeight / 2;
                    $this->svg->addPolyline($hex, array_merge($styles, ['transform' => "translate($onePointFiveXSideLengthMinusHalfHexWidth, $dy2MinusHalfHexHeight)"]));
                }

                // Add an extra one at bottom-right, for tiling.
                if ($x == 0 && $y == 0) {
                    $onePointFiveSideLengthSixMinusHalfHexWidth = 6 * $sideLength * 1.5 - $hexWidth / 2;
                    $fiveHexHeightPlusHalfHexHeight = 5 * $hexHeight + $hexHeight / 2;
                    $this->svg->addPolyline($hex, array_merge($styles, ['transform' => "translate($onePointFiveSideLengthSixMinusHalfHexWidth, $fiveHexHeightPlusHalfHexHeight)"]));
                }

                $i++;
            }
        }
    }

    protected function geoSineWaves()
    {
        $period = floor($this->map($this->hexVal(0, 1), 0, 15, 100, 400));
        $quarterPeriod = $period / 4;
        $xOffset = $period / 4 * 0.7;
        $amplitude = floor($this->map($this->hexVal(1, 1), 0, 15, 30, 100));
        $waveWidth = floor($this->map($this->hexVal(2, 1), 0, 15, 3, 30));
        $amplitudeString = number_format($amplitude);
        $halfPeriod = number_format($period / 2);
        $halfPeriodMinusXOffset = number_format($period / 2 - $xOffset);
        $periodMinusXOffset = number_format($period - $xOffset);
        $twoAmplitude = number_format(2 * $amplitude);
        $onePointFivePeriodMinusXOffset = number_format($period * 1.5 - $xOffset);
        $onePointFivePeriod = number_format($period * 1.5);
        $str = "M0 $amplitudeString C $xOffset 0, $halfPeriodMinusXOffset 0, $halfPeriod $amplitudeString S $periodMinusXOffset $twoAmplitude, $period $amplitudeString S $onePointFivePeriodMinusXOffset 0, $onePointFivePeriod, $amplitudeString";

        $this->svg->setWidth($period)
            ->setHeight($waveWidth*36);
        for ($i = 0; $i <= 35; $i++) {
            $val = $this->hexVal($i, 1);
            $opacity = $this->opacity($val);
            $fill = $this->fillColor($val);
            $styles = [
                'fill' => 'none',
                'stroke' => $fill,
                'style' => [
                    'opacity' => $opacity,
                    'stroke-width' => "{$waveWidth}px"
                ]
            ];

            $iWaveWidthMinusOnePointFiveAmplitude = $waveWidth * $i - $amplitude * 1.5;
            $iWaveWidthMinusOnePointFiveAmplitudePlusThirtySixWaveWidth = $waveWidth * $i - $amplitude * 1.5 + $waveWidth * 36;
            $this->svg->addPath($str, array_merge($styles, ['transform' => "translate(-$quarterPeriod, $iWaveWidthMinusOnePointFiveAmplitude)"]));
            $this->svg->addPath($str, array_merge($styles, ['transform' => "translate(-$quarterPeriod, $iWaveWidthMinusOnePointFiveAmplitudePlusThirtySixWaveWidth)"]));

        }
    }

    protected function geoChevrons()
    {
        $chevronWidth = $this->map($this->hexVal(0, 1), 0, 15, 30, 80);
        $chevronHeight = $this->map($this->hexVal(0, 1), 0, 15, 30, 80);
        $chevron = $this->buildChevronShape($chevronWidth, $chevronHeight);

        $this->svg->setWidth($chevronWidth*6)
            ->setHeight($chevronHeight*6*0.66);

        $i = 0;
        for ($y = 0; $y <= 5; $y++) {
            for ($x = 0; $x <= 5; $x++) {
                $val = $this->hexVal($i, 1);
                $opacity = $this->opacity($val);
                $fill = $this->fillColor($val);
                $styles = [
                    'stroke' => self::STROKE_COLOR,
                    'stroke-opacity' => self::STROKE_OPACITY,
                    'stroke-width' => '1',
                    'fill-opacity' => $opacity,
                    'fill' => $fill,
                ];

                $group = new Group();
                $group->addItem($chevron[0])
                    ->addItem($chevron[1]);

                $xChevronWidth = $x * $chevronWidth;
                $yPointSixSixChevronHeightMinusHalfChevronHeight = $y * $chevronHeight * 0.66 - $chevronHeight / 2;
                $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($xChevronWidth,$yPointSixSixChevronHeightMinusHalfChevronHeight)"]));
                // Add an extra row at the end that matches the first row, for tiling.
                if ($y == 0) {
                    $sixPointSixSixChevronHeightMinusHalfChevronHeight = 6 * $chevronHeight * 0.66 - $chevronHeight / 2;
                    $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($xChevronWidth,$sixPointSixSixChevronHeightMinusHalfChevronHeight)"]));
                }

                $i++;
            }
        }

    }

    protected function geoPlusSigns()
    {
        $squareSize = $this->map($this->hexVal(0, 1), 0, 15, 10, 25);
        $plusSize = $squareSize * 3;
        $plusShape = $this->buildPlusShape($squareSize);

        $this->svg->setWidth($squareSize*12)
            ->setHeight($squareSize*12);

        $i = 0;
        for ($y = 0; $y <= 5; $y++) {
            for ($x = 0; $x <= 5; $x++) {
                $val = $this->hexVal($i, 1);
                $opacity = $this->opacity($val);
                $fill = $this->fillColor($val);
                $dx = ($y % 2 == 0) ? 0 : 1;

                $styles = [
                    'fill' => $fill,
                    'stroke' => self::STROKE_COLOR,
                    'stroke-opacity' => self::STROKE_OPACITY,
                    'style' => [
                        'fill-opacity' => $opacity,
                    ],
                ];

                $group = new Group();
                $group->addItem($plusShape[0])
                    ->addItem($plusShape[1]);

                $t1 = $x * $plusSize - $x * $squareSize + $dx * $squareSize - $squareSize;
                $t2 = $y * $plusSize - $y * $squareSize - $plusSize / 2;

                $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($t1, $t2)"]));

                // Add an extra column on the right for tiling.
                if ($x == 0) {
                    $xT1 = 4 * $plusSize - $x * $squareSize + $dx * $squareSize - $squareSize;
                    $xT2 = $y * $plusSize - $y * $squareSize - $plusSize / 2;
                    $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($xT1, $xT2)"]));
                }

                // Add an extra row on the bottom that matches the first row, for tiling.
                if ($y == 0) {
                    $yT1 = $x * $plusSize - $x * $squareSize + $dx * $squareSize - $squareSize;
                    $yT2 = 4 * $plusSize - $y * $squareSize - $plusSize /2;
                    $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($yT1, $yT2)"]));
                }

                // Add an extra one at top-right and bottom-right, for tiling.
                if ($x == 0 && $y == 0) {
                    $xyT1 = 4 * $plusSize - $x * $squareSize + $dx * $squareSize - $squareSize;
                    $xyT2 = 4 * $plusSize - $y * $squareSize - $plusSize / 2;
                    $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($xyT1, $xyT2)"]));
                }

                $i++;
            }
        }
    }

    protected function geoXes()
    {
        $squareSize = $this->map($this->hexVal(0, 1), 0, 15, 10, 25);
        $xSize = $squareSize * 3 * 0.943;
        $xShape = $this->buildPlusShape($squareSize);

        $this->svg->setWidth($xSize*3)
            ->setHeight($xSize*3);

        $i = 0;
        for ($y = 0; $y <= 5; $y++) {
            for ($x = 0; $x <= 5; $x++) {
                $val = $this->hexVal($i, 1);
                $opacity = $this->opacity($val);
                $fill = $this->fillColor($val);
                $dy = ($x % 2 == 0) ? ($y * $xSize - $xSize * 0.5) : ($y * $xSize - $xSize * 0.5 + $xSize / 4);

                $styles = [
                    'fill' => $fill,
                    'style' => [
                        'opacity' => $opacity,
                    ],
                ];

                $group = new Group();
                $group->addItem($xShape[0])
                    ->addItem($xShape[1]);

                $t1 = $x * $xSize / 2 - $xSize / 2;
                $t2 = $dy - $y * $xSize / 2;
                $halfXSize = $xSize / 2;
                $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($t1, $t2) rotate(45, $halfXSize, $halfXSize)"]));

                // Add an extra column on the right for tiling.
                if ($x == 0) {
                    $xT1 = 6 * $xSize / 2 - $xSize / 2;
                    $xT2 = $dy - $y * $xSize / 2;
                    $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($xT1, $xT2) rotate(45, $halfXSize, $halfXSize)"]));
                }

                // Add an extra row on the bottom that matches the first row, for tiling.
                if ($y == 0) {
                    $dy = ($x % 2 == 0) ? (6 * $xSize - $xSize / 2) : (6 * $xSize - $xSize / 2 + $xSize / 4);
                    $yT1 = $x * $xSize / 2 - $xSize / 2;
                    $yT2 = $dy - 6 * $xSize / 2;
                    $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($yT1, $yT2) rotate(45, $halfXSize, $halfXSize)"]));
                }

                // These can hang off the bottom, so put a row at the top for tiling.
                if ($y == 5) {
                    $y2T1 = $x * $xSize / 2 - $xSize / 2;
                    $y2T2 = $dy - 11 * $xSize / 2;
                    $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($y2T1, $y2T2) rotate(45, $halfXSize, $halfXSize)"]));
                }

                // Add an extra one at top-right and bottom-right, for tiling.
                if ($x == 0 && $y == 0) {
                    $xyT1 = 6 * $xSize / 2 - $xSize / 2;
                    $xyT2 = $dy - 6 * $xSize / 2;
< $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($xyT1, $xyT2) rotate(45, $halfXSize, $halfXSize"]));
> $this->svg->addGroup($group, array_merge($styles, ['transform' => "translate($xyT1, $xyT2) rotate(45, $halfXSize, $halfXSize)"]));
} $i++; } } } protected function geoOverlappingCircles() { $scale = $this->hexVal(0, 1); $diameter = $this->map($scale, 0, 15, 25, 200); $radius = $diameter/2; $this->svg->setWidth($radius*6) ->setHeight($radius*6); $i = 0; for ($y = 0; $y <= 5; $y++) { for ($x = 0; $x <= 5; $x++) { $val = $this->hexVal($i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $styles = [ 'fill' => $fill, 'style' => [ 'opacity' => $opacity, ], ]; $this->svg->addCircle($x*$radius, $y*$radius, $radius, $styles); // Add an extra one at top-right, for tiling. if ($x == 0) $this->svg->addCircle(6*$radius, $y*$radius, $radius, $styles); // Add an extra row at the end that matches the first row, for tiling. if ($y == 0) $this->svg->addCircle($x*$radius, 6*$radius, $radius, $styles); // Add an extra one at bottom-right, for tiling. if ($x == 0 && $y == 0) $this->svg->addCircle(6*$radius, 6*$radius, $radius, $styles); $i++; } } } protected function geoOctogons() { $squareSize = $this->map($this->hexVal(0, 1), 0, 15, 10, 60); $tile = $this->buildOctogonShape($squareSize); $this->svg->setWidth($squareSize*6) ->setHeight($squareSize*6); $i = 0; for ($y = 0; $y <= 5; $y++) { for ($x = 0; $x <= 5; $x++) { $val = $this->hexVal($i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $xSquareSize = $x * $squareSize; $ySquareSize = $y * $squareSize; $this->svg->addPolyline($tile, [ 'fill' => $fill, 'fill-opacity' => $opacity, 'stroke' => self::STROKE_COLOR, 'stroke-opacity' => self::STROKE_OPACITY, 'transform' => "translate($xSquareSize, $ySquareSize)", ]); $i++; } } } protected function geoSquares() { $squareSize = $this->map($this->hexVal(0, 1), 0, 15, 10, 60); $this->svg->setWidth($squareSize*6) ->setHeight($squareSize*6); $i = 0; for ($y = 0; $y <= 5; $y++) { for ($x = 0; $x <= 5; $x++) { $val = $this->hexVal($i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $this->svg->addRectangle($x*$squareSize, $y*$squareSize, $squareSize, $squareSize, [ 'fill' => $fill, 'fill-opacity' => $opacity, 'stroke' => self::STROKE_COLOR, 'stroke-opacity' => self::STROKE_OPACITY, ]); $i++; } } } protected function geoConcentricCircles() { $scale = $this->hexVal(0, 1); $ringSize = $this->map($scale, 0, 15, 10, 60); $strokeWidth = $ringSize / 5; $this->svg->setWidth(($ringSize + $strokeWidth)*6) ->setHeight(($ringSize + $strokeWidth)*6); $i = 0; for ($y = 0; $y <= 5; $y++) { for ($x = 0; $x <= 5; $x++) { $val = $this->hexVal($i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $cx = $x * $ringSize + $x * $strokeWidth + ($ringSize + $strokeWidth) / 2; $cy = $y * $ringSize + $y * $strokeWidth + ($ringSize + $strokeWidth) / 2; $halfRingSize = $ringSize / 2; $this->svg->addCircle($cx, $cy, $halfRingSize, [ 'fill' => 'none', 'stroke' => $fill, 'style' => [ 'opacity' => $opacity, 'stroke-width' => "{$strokeWidth}px", ], ]); $val = $this->hexVal(39-$i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $quarterRingSize = $ringSize / 4; $this->svg->addCircle($cx, $cy, $quarterRingSize, [ 'fill' => $fill, 'fill-opacity' => $opacity, ]); $i++; } } } protected function geoOverlappingRings() { $scale = $this->hexVal(0, 1); $ringSize = $this->map($scale, 0, 15, 10, 60); $strokeWidth = $ringSize / 4; $this->svg->setWidth($ringSize*6) ->setHeight($ringSize*6); $i = 0; for ($y = 0; $y <= 5; $y++) { for ($x = 0; $x <= 5; $x++) { $val = $this->hexVal($i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $styles = [ 'fill' => 'none', 'stroke' => $fill, 'style' => [ 'opacity' => $opacity, 'stroke-width' => "{$strokeWidth}px", ], ]; $ringSizeMinusHalfStrokeWidth = $ringSize - $strokeWidth / 2; $this->svg->addCircle($x*$ringSize, $y*$ringSize, $ringSizeMinusHalfStrokeWidth, $styles); // Add an extra one at top-right, for tiling. if ($x == 0) $this->svg->addCircle(6*$ringSize, $y*$ringSize, $ringSizeMinusHalfStrokeWidth, $styles); // Add an extra row at the end that matches the first row, for tiling. if ($y == 0) $this->svg->addCircle($x*$ringSize, 6*$ringSize, $ringSizeMinusHalfStrokeWidth, $styles); // Add an extra one at bottom-right, for tiling. if ($x == 0 && $y == 0) $this->svg->addCircle(6*$ringSize, 6*$ringSize, $ringSizeMinusHalfStrokeWidth, $styles); $i++; } } } protected function geoTriangles() { $scale = $this->hexVal(0, 1); $sideLength = $this->map($scale, 0 ,15, 15, 80); $triangleHeight = $sideLength / 2 * sqrt(3); $triangle = $this->buildTriangleShape($sideLength, $triangleHeight); $this->svg->setWidth($sideLength * 3) ->setHeight($triangleHeight * 6); $i = 0; for ($y = 0; $y <= 5; $y++) { for ($x = 0; $x <= 5; $x++) { $val = $this->hexVal($i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $styles = [ 'fill' => $fill, 'fill-opacity' => $opacity, 'stroke' => self::STROKE_COLOR, 'stroke-opacity' => self::STROKE_OPACITY, ]; $rotation = ''; if ($y % 2 == 0) $rotation = ($x % 2 == 0) ? 180 : 0; else $rotation = ($x % 2 != 0) ? 180 : 0; $halfSideLength = $sideLength / 2; $halfTriangleHeight = $triangleHeight / 2; $yTriangleHeight = $triangleHeight * $y; $t1 = $x * $sideLength * 0.5 - $sideLength / 2; $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($t1, $yTriangleHeight) rotate($rotation, $halfSideLength, $halfTriangleHeight)"])); // Add an extra one at top-right, for tiling. if ($x == 0) { $xT1 = 6 * $sideLength * 0.5 - $sideLength / 2; $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($xT1, $yTriangleHeight) rotate($rotation, $halfSideLength, $halfTriangleHeight)"])); } $i++; } } } protected function geoTrianglesRotated() { $scale = $this->hexVal(0, 1); $sideLength = $this->map($scale, 0 ,15, 15, 80); $triangleWidth = $sideLength / 2 * sqrt(3); $triangle = $this->buildRotatedTriangleShape($sideLength, $triangleWidth); $this->svg->setWidth($triangleWidth * 6) ->setHeight($sideLength * 3); $i = 0; for ($y = 0; $y <= 5; $y++) { for ($x = 0; $x <= 5; $x++) { $val = $this->hexVal($i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $styles = [ 'fill' => $fill, 'fill-opacity' => $opacity, 'stroke' => self::STROKE_COLOR, 'stroke-opacity' => self::STROKE_OPACITY, ]; $rotation = ''; if ($y % 2 == 0) $rotation = ($x % 2 == 0) ? 180 : 0; else $rotation = ($x % 2 != 0) ? 180 : 0; $halfSideLength = $sideLength / 2; $halfTriangleWidth = $triangleWidth / 2; $xTriangleWidth = $x * $triangleWidth; $t1 = $y * $sideLength * 0.5 - $sideLength / 2; $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($xTriangleWidth, $t1) rotate($rotation, $halfTriangleWidth, $halfSideLength)"])); // Add an extra one at top-right, for tiling. if ($y == 0) { $yT1 = 6 * $sideLength * 0.5 - $sideLength / 2; $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($xTriangleWidth, $yT1) rotate($rotation, $halfTriangleWidth, $halfSideLength)"])); } $i++; } } } protected function geoDiamonds() { $diamondWidth = $this->map($this->hexVal(0, 1), 0, 15, 10, 50); $diamondHeight = $this->map($this->hexVal(1, 1), 0, 15, 10, 50); $diamond = $this->buildDiamondShape($diamondWidth, $diamondHeight); $this->svg->setWidth($diamondWidth*6) ->setHeight($diamondHeight*3); $i = 0; for ($y = 0; $y <= 5; $y++) { for ($x = 0; $x <= 5; $x++) { $val = $this->hexVal($i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $styles = [ 'fill' => $fill, 'fill-opacity' => $opacity, 'stroke' => self::STROKE_COLOR, 'stroke-opacity' => self::STROKE_OPACITY, ]; $dx = ($y % 2 == 0) ? 0 : ($diamondWidth / 2); $t1 = $x * $diamondWidth - $diamondWidth / 2 + $dx; $t2 = $diamondHeight / 2 * $y - $diamondHeight / 2; $this->svg->addPolyline($diamond, array_merge($styles, ['transform' => "translate($t1, $t2)"])); // Add an extra one at top-right, for tiling. if ($x == 0) { $xT1 = 6 * $diamondWidth - $diamondWidth / 2 + $dx; $xT2 = $diamondHeight / 2 * $y - $diamondHeight / 2; $this->svg->addPolyline($diamond, array_merge($styles, ['transform' => "translate($xT1, $xT2)"])); } // Add an extra row at the end that matches the first row, for tiling. if ($y == 0) { $yT1 = $x * $diamondWidth - $diamondWidth / 2 + $dx; $yT2 = $diamondHeight / 2 * 6 - $diamondHeight / 2; $this->svg->addPolyline($diamond, array_merge($styles, ['transform' => "translate($yT1, $yT2)"])); } // Add an extra one at bottom-right, for tiling. if ($x == 0 && $y == 0) { $xyT1 = 6 * $diamondWidth - $diamondWidth / 2 + $dx; $xyT2 = $diamondHeight / 2 * 6 - $diamondHeight / 2; $this->svg->addPolyline($diamond, array_merge($styles, ['transform' => "translate($xyT1, $xyT2)"])); } $i++; } } } protected function geoNestedSquares() { $blockSize = $this->map($this->hexVal(0, 1), 0, 15, 4, 12); $squareSize = $blockSize * 7; $dimension = ($squareSize + $blockSize) * 6 + $blockSize * 6; $this->svg->setWidth($dimension) ->setHeight($dimension); $i = 0; for ($y = 0; $y <= 5; $y++) { for ($x = 0; $x <= 5; $x++) { $val = $this->hexVal($i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $styles = [ 'fill' => 'none', 'stroke' => $fill, 'style' => [ 'opacity' => $opacity, 'stroke-width' => "{$blockSize}px", ], ]; $rX = $x * $squareSize + $x * $blockSize * 2 + $blockSize / 2; $rY = $y * $squareSize + $y * $blockSize * 2 + $blockSize / 2; $this->svg->addRectangle($rX, $rY, $squareSize, $squareSize, $styles); $val = $this->hexVal(39-$i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $styles = [ 'fill' => 'none', 'stroke' => $fill, 'style' => [ 'opacity' => $opacity, 'stroke-width' => "{$blockSize}px", ], ]; $rX2 = $x * $squareSize + $x * $blockSize * 2 + $blockSize / 2 + $blockSize * 2; $rY2 = $y * $squareSize + $y * $blockSize * 2 + $blockSize / 2 + $blockSize * 2; $this->svg->addRectangle($rX2, $rY2, $blockSize * 3, $blockSize * 3, $styles); $i++; } } } protected function geoMosaicSquares() { $triangleSize = $this->map($this->hexVal(0, 1), 0, 15, 15, 50); $this->svg->setWidth($triangleSize*8) ->setHeight($triangleSize*8); $i = 0; for ($y = 0; $y <= 3; $y++) { for ($x = 0; $x <= 3; $x++) { if ($x % 2 == 0) { if ($y % 2 == 0) $this->drawOuterMosaicTile($x*$triangleSize*2, $y*$triangleSize*2, $triangleSize, $this->hexVal($i, 1)); else $this->drawInnerMosaicTile($x*$triangleSize*2, $y*$triangleSize*2, $triangleSize, [$this->hexVal($i, 1), $this->hexVal($i+1, 1)]); } else { if ($y % 2 == 0) $this->drawInnerMosaicTile($x*$triangleSize*2, $y*$triangleSize*2, $triangleSize, [$this->hexVal($i, 1), $this->hexVal($i+1, 1)]); else $this->drawOuterMosaicTile($x*$triangleSize*2, $y*$triangleSize*2, $triangleSize, $this->hexVal($i, 1)); } $i++; } } } protected function geoPlaid() { $height = 0; $width = 0; // Horizontal Stripes $i = 0; $times = 0; while ($times++ <= 18) { $space = $this->hexVal($i, 1); $height += $space + 5; $val = $this->hexVal($i+1, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $stripeHeight = $val + 5; $this->svg->addRectangle(0, $height, "100%", $stripeHeight, [ 'opacity' => $opacity, 'fill' => $fill, ]); $height += $stripeHeight; $i += 2; } // Vertical Stripes $i = 0; $times = 0; while ($times++ <= 18) { $space = $this->hexVal($i, 1); $width += $space + 5; $val = $this->hexVal($i+1, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $stripeWidth = $val + 5; $this->svg->addRectangle($width, 0, $stripeWidth, "100%", [ 'opacity' => $opacity, 'fill' => $fill, ]); $width += $stripeWidth; $i += 2; } $this->svg->setWidth($width) ->setHeight($height); } protected function geoTessellation() { $sideLength = $this->map($this->hexVal(0, 1), 0, 15, 5, 40); $hexHeight = $sideLength * sqrt(3); $hexWidth = $sideLength * 2; $triangleHeight = $sideLength / 2 * sqrt(3); $triangle = $this->buildRotatedTriangleShape($sideLength, $triangleHeight); $tileWidth = $sideLength * 3 + $triangleHeight * 2; $tileHeight = ($hexHeight * 2) + ($sideLength * 2); $this->svg->setWidth($tileWidth) ->setHeight($tileHeight); // Doing these variables up here, so we only have to calculate them once. $halfSideLength = $sideLength / 2; $negativeHalfSideLength = -$sideLength / 2; $halfTriangleHeight = $triangleHeight / 2; $halfHexHeight = $hexHeight / 2; $tileHeightPlusHalfSideLength = $tileHeight + $sideLength / 2; $halfTileHeightMinusHalfSideLength = $tileHeight / 2 - $sideLength / 2; $halfTileWidthPlusHalfSideLength = $tileWidth / 2 + $sideLength / 2; $tileWidthMinusHalfTileWidthMinusHalfSideLength = $tileWidth - $tileWidth/2 - $sideLength/2; $tileWidthMinusHalfSideLength = $tileWidth - $sideLength / 2; $tileHeightMinusHalfHexHeight = $tileHeight - $hexHeight / 2; $negativeTileWidthPlusHalfSideLength = -$tileWidth + $sideLength / 2; $halfTileHeightMinusHalfSideLengthMinusSideLength = $tileHeight/2-$sideLength/2-$sideLength; $negativeTileHeightPlusHalfTileHeightMinusHalfSideLengthMinusSideLength = -$tileHeight+$tileHeight/2-$sideLength/2-$sideLength; $negativeTileHeightPlusHalfSideLength = -$tileHeight + $sideLength / 2; for ($i = 0; $i <= 19; $i++) { $val = $this->hexVal($i, 1); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $styles = [ 'stroke' => self::STROKE_COLOR, 'stroke-opacity' => self::STROKE_OPACITY, 'fill' => $fill, 'fill-opacity' => $opacity, 'stroke-width' => 1, ]; switch ($i) { case 0: # all 4 corners $this->svg->addRectangle(-$sideLength/2, -$sideLength/2, $sideLength, $sideLength, $styles); $this->svg->addRectangle($tileWidth-$sideLength/2, -$sideLength/2, $sideLength, $sideLength, $styles); $this->svg->addRectangle(-$sideLength/2, $tileHeight-$sideLength/2, $sideLength, $sideLength, $styles); $this->svg->addRectangle($tileWidth-$sideLength/2, $tileHeight-$sideLength/2, $sideLength, $sideLength, $styles); break; case 1: # center / top square $this->svg->addRectangle($hexWidth/2+$triangleHeight, $hexHeight/2, $sideLength, $sideLength, $styles); break; case 2: # side squares $this->svg->addRectangle(-$sideLength/2, $tileHeight/2-$sideLength/2, $sideLength, $sideLength, $styles); $this->svg->addRectangle($tileWidth-$sideLength/2, $tileHeight/2-$sideLength/2, $sideLength, $sideLength, $styles); break; case 3: # center / bottom square $this->svg->addRectangle($hexWidth/2+$triangleHeight, $hexHeight*1.5+$sideLength, $sideLength, $sideLength, $styles); break; case 4: # left top / bottom triangle $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($halfSideLength, $negativeHalfSideLength) rotate(0, $halfSideLength, $halfTriangleHeight)"])); $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($halfSideLength, $tileHeightPlusHalfSideLength) rotate(0, $halfSideLength, $halfTriangleHeight) scale(1, -1)"])); break; case 5: # right top / bottom triangle $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($tileWidthMinusHalfSideLength, $negativeHalfSideLength) rotate(0, $halfSideLength, $halfTriangleHeight) scale(-1, 1)"])); $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($tileWidthMinusHalfSideLength, $tileHeightPlusHalfSideLength) rotate(0, $halfSideLength, $halfTriangleHeight) scale(-1, -1)"])); break; case 6: # center / top / right triangle $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($halfTileWidthPlusHalfSideLength, $halfHexHeight)"])); break; case 7: # center / top / left triangle $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($tileWidthMinusHalfTileWidthMinusHalfSideLength, $halfHexHeight) scale(-1, 1)"])); break; case 8: # center / bottom / right triangle $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($halfTileWidthPlusHalfSideLength, $tileHeightMinusHalfHexHeight) scale(1, -1)"])); break; case 9: # center / bottom / left triangle $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($tileWidthMinusHalfTileWidthMinusHalfSideLength, $tileHeightMinusHalfHexHeight) scale(-1, -1)"])); break; case 10: # left / middle triangle $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($halfSideLength, $halfTileHeightMinusHalfSideLength)"])); break; case 11: # right / middle triangle $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($tileWidthMinusHalfSideLength, $halfTileHeightMinusHalfSideLength) scale(-1, 1)"])); break; case 12: # left / top square $this->svg->addRectangle(0, 0, $sideLength, $sideLength, array_merge($styles, ['transform' => "translate($halfSideLength, $halfSideLength) rotate(-30, 0, 0)"])); break; case 13: # right / top square $this->svg->addRectangle(0, 0, $sideLength, $sideLength, array_merge($styles, ['transform' => "scale(-1, 1) translate($negativeTileWidthPlusHalfSideLength, $halfSideLength) rotate(-30, 0, 0)"])); break; case 14: # left / center-top square $this->svg->addRectangle(0, 0, $sideLength, $sideLength, array_merge($styles, ['transform' => "translate($halfSideLength, $halfTileHeightMinusHalfSideLengthMinusSideLength) rotate(30, 0, $sideLength)"])); break; case 15: # right / center-top square $this->svg->addRectangle(0, 0, $sideLength, $sideLength, array_merge($styles, ['transform' => "scale(-1, 1) translate($negativeTileWidthPlusHalfSideLength, $halfTileHeightMinusHalfSideLengthMinusSideLength) rotate(30, 0, $sideLength)"])); break; case 16: # left / center-top square $this->svg->addRectangle(0, 0, $sideLength, $sideLength, array_merge($styles, ['transform' => "scale(1, -1) translate($halfSideLength, $negativeTileHeightPlusHalfTileHeightMinusHalfSideLengthMinusSideLength) rotate(30, 0, $sideLength)"])); break; case 17: # right / center-bottom square $this->svg->addRectangle(0, 0, $sideLength, $sideLength, array_merge($styles, ['transform' => "scale(-1, -1) translate($negativeTileWidthPlusHalfSideLength, $negativeTileHeightPlusHalfTileHeightMinusHalfSideLengthMinusSideLength) rotate(30, 0, $sideLength)"])); break; case 18: # left / bottom square $this->svg->addRectangle(0, 0, $sideLength, $sideLength, array_merge($styles, ['transform' => "scale(1, -1) translate($halfSideLength, $negativeTileHeightPlusHalfSideLength) rotate(-30, 0, 0)"])); break; case 19: # right / bottom square $this->svg->addRectangle(0, 0, $sideLength, $sideLength, array_merge($styles, ['transform' => "scale(-1, -1) translate($negativeTileWidthPlusHalfSideLength, $negativeTileHeightPlusHalfSideLength) rotate(-30, 0, 0)"])); break; } } } // build* functions protected function buildChevronShape($width, $height) { $e = $height * 0.66; $halfWidth = $width / 2; $heightMinusE = $height - $e; return [ new Polyline("0,0,$halfWidth,$heightMinusE,$halfWidth,$height,0,$e,0,0"), new Polyline("$halfWidth,$heightMinusE,$width,0,$width,$e,$halfWidth,$height,$halfWidth,$heightMinusE") ]; } protected function buildOctogonShape($squareSize) { $s = $squareSize; $c = $s * 0.33; $sMinusC = $s - $c; return "$c,0,$sMinusC,0,$s,$c,$s,$sMinusC,$sMinusC,$s,$c,$s,0,$sMinusC,0,$c,$c,0"; } protected function buildHexagonShape($sideLength) { $c = $sideLength; $a = $c/2; $b = sin(60 * M_PI / 180) * $c; $twoB = $b * 2; $twoC = $c * 2; $aPlusC = $a + $c; return "0,$b,$a,0,$aPlusC,0,$twoC,$b,$aPlusC,$twoB,$a,$twoB,0,$b"; } protected function buildPlusShape($squareSize) { return [ new Rectangle($squareSize, 0, $squareSize, $squareSize*3), new Rectangle(0, $squareSize, $squareSize*3, $squareSize), ]; } protected function buildTriangleShape($sideLength, $height) { $halfWidth = $sideLength / 2; return "$halfWidth, 0, $sideLength, $height, 0, $height, $halfWidth, 0"; } protected function buildRotatedTriangleShape($sideLength, $width) { $halfHeight = $sideLength / 2; return "0, 0, $width, $halfHeight, 0, $sideLength, 0, 0"; } protected function buildRightTriangleShape($sideLength) { return "0, 0, $sideLength, $sideLength, 0, $sideLength, 0, 0"; } protected function buildDiamondShape($width, $height) { $halfWidth = $width / 2; $halfHeight = $height / 2; return "$halfWidth, 0, $width, $halfHeight, $halfWidth, $height, 0, $halfHeight"; } // draw* functions protected function drawInnerMosaicTile($x, $y, $triangleSize, $vals) { $triangle = $this->buildRightTriangleShape($triangleSize); $opacity = $this->opacity($vals[0]); $fill = $this->fillColor($vals[0]); $styles = [ 'stroke' => self::STROKE_COLOR, 'stroke-opacity' => self::STROKE_OPACITY, 'fill-opacity' => $opacity, 'fill' => $fill, ]; $xPlusTriangleSize = $x + $triangleSize; $yPlusTwoTriangleSize = $y + $triangleSize * 2; $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($xPlusTriangleSize, $y) scale(-1, 1)"])) ->addPolyline($triangle, array_merge($styles, ['transform' => "translate($xPlusTriangleSize, $yPlusTwoTriangleSize) scale(1, -1)"])); $opacity = $this->opacity($vals[1]); $fill = $this->fillColor($vals[1]); $styles = [ 'stroke' => self::STROKE_COLOR, 'stroke-opacity' => self::STROKE_OPACITY, 'fill-opacity' => $opacity, 'fill' => $fill, ]; $xPlusTriangleSize = $x + $triangleSize; $yPlusTwoTriangleSize = $y + $triangleSize * 2; $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($xPlusTriangleSize, $yPlusTwoTriangleSize) scale(-1, -1)"])) ->addPolyline($triangle, array_merge($styles, ['transform' => "translate($xPlusTriangleSize, $y) scale(1, 1)"])); return $this; } protected function drawOuterMosaicTile($x, $y, $triangleSize, $val) { $triangle = $this->buildRightTriangleShape($triangleSize); $opacity = $this->opacity($val); $fill = $this->fillColor($val); $styles = [ 'stroke' => self::STROKE_COLOR, 'stroke-opacity' => self::STROKE_OPACITY, 'fill-opacity' => $opacity, 'fill' => $fill, ]; $yPlusTriangleSize = $y + $triangleSize; $xPlusTwoTriangleSize = $x + $triangleSize * 2; $this->svg->addPolyline($triangle, array_merge($styles, ['transform' => "translate($x, $yPlusTriangleSize) scale(1, -1)"])) ->addPolyline($triangle, array_merge($styles, ['transform' => "translate($xPlusTwoTriangleSize, $yPlusTriangleSize) scale(-1, -1)"])) ->addPolyline($triangle, array_merge($styles, ['transform' => "translate($x, $yPlusTriangleSize) scale(1, 1)"])) ->addPolyline($triangle, array_merge($styles, ['transform' => "translate($xPlusTwoTriangleSize, $yPlusTriangleSize) scale(-1, 1)"])); } // Utility Functions protected function fillColor($val) { return ($val % 2 == 0) ? self::FILL_COLOR_LIGHT : self::FILL_COLOR_DARK; } protected function opacity($val) { return $this->map($val, 0, 15, self::OPACITY_MIN, self::OPACITY_MAX); } protected function hexVal($index, $len) { return hexdec(substr($this->hash, $index, $len)); } // PHP implementation of Processing's map function // http://processing.org/reference/map_.html protected function map($value, $vMin, $vMax, $dMin, $dMax) { $vValue = floatval($value); $vRange = $vMax - $vMin; $dRange = $dMax - $dMin; return ($vValue - $vMin) * $dRange / $vRange + $dMin; } // Color Functions protected function hexToHSL($color) { $color = trim($color, '#'); $R = hexdec($color[0].$color[1]); $G = hexdec($color[2].$color[3]); $B = hexdec($color[4].$color[5]); $HSL = array(); $var_R = ($R / 255); $var_G = ($G / 255); $var_B = ($B / 255); $var_Min = min($var_R, $var_G, $var_B); $var_Max = max($var_R, $var_G, $var_B); $del_Max = $var_Max - $var_Min; $L = ($var_Max + $var_Min)/2; if ($del_Max == 0) { $H = 0; $S = 0; } else { if ( $L < 0.5 ) $S = $del_Max / ( $var_Max + $var_Min ); else $S = $del_Max / ( 2 - $var_Max - $var_Min ); $del_R = ( ( ( $var_Max - $var_R ) / 6 ) + ( $del_Max / 2 ) ) / $del_Max; $del_G = ( ( ( $var_Max - $var_G ) / 6 ) + ( $del_Max / 2 ) ) / $del_Max; $del_B = ( ( ( $var_Max - $var_B ) / 6 ) + ( $del_Max / 2 ) ) / $del_Max; if ($var_R == $var_Max) $H = $del_B - $del_G; else if ($var_G == $var_Max) $H = ( 1 / 3 ) + $del_R - $del_B; else if ($var_B == $var_Max) $H = ( 2 / 3 ) + $del_G - $del_R; if ($H<0) $H++; if ($H>1) $H--; } $HSL['h'] = ($H*360); $HSL['s'] = $S; $HSL['l'] = $L; return $HSL; } protected function hexToRGB($hex) { $hex = str_replace("#", "", $hex); if(strlen($hex) == 3) { $r = hexdec(substr($hex,0,1).substr($hex,0,1)); $g = hexdec(substr($hex,1,1).substr($hex,1,1)); $b = hexdec(substr($hex,2,1).substr($hex,2,1)); } else { $r = hexdec(substr($hex,0,2)); $g = hexdec(substr($hex,2,2)); $b = hexdec(substr($hex,4,2)); } return ['r' => $r, 'g' => $g, 'b' => $b]; } protected function rgbToHSL($r, $g, $b) { $r /= 255; $g /= 255; $b /= 255; $max = max($r, $g, $b); $min = min($r, $g, $b); $l = ($max + $min) / 2; if ($max == $min) { $h = $s = 0; } else { $d = $max - $min; $s = $l > 0.5 ? $d / (2 - $max - $min) : $d / ($max + $min); switch ($max) { case $r: $h = ($g - $b) / $d + ($g < $b ? 6 : 0); break; case $g: $h = ($b - $r) / $d + 2; break; case $b: $h = ($r - $g) / $d + 4; break; } $h /= 6; } $h = floor($h * 360); $s = floor($s * 100); $l = floor($l * 100); return ['h' => $h, 's' => $s, 'l' => $l]; } protected function hslToRGB ($h, $s, $l) { $h += 360; $c = ( 1 - abs( 2 * $l - 1 ) ) * $s; $x = $c * ( 1 - abs( fmod( ( $h / 60 ), 2 ) - 1 ) ); $m = $l - ( $c / 2 ); if ( $h < 60 ) { $r = $c; $g = $x; $b = 0; } else if ( $h < 120 ) { $r = $x; $g = $c; $b = 0; } else if ( $h < 180 ) { $r = 0; $g = $c; $b = $x; } else if ( $h < 240 ) { $r = 0; $g = $x; $b = $c; } else if ( $h < 300 ) { $r = $x; $g = 0; $b = $c; } else { $r = $c; $g = 0; $b = $x; } $r = ( $r + $m ) * 255; $g = ( $g + $m ) * 255; $b = ( $b + $m ) * 255; return array( 'r' => floor( $r ), 'g' => floor( $g ), 'b' => floor( $b ) ); } //NOT USED protected function rgbToHex($r, $g, $b) { $hex = "#"; $hex .= str_pad(dechex($r), 2, "0", STR_PAD_LEFT); $hex .= str_pad(dechex($g), 2, "0", STR_PAD_LEFT); $hex .= str_pad(dechex($b), 2, "0", STR_PAD_LEFT); return $hex; } }