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Geometric figures

Informations

Author: David Hernández Sanz
License: Freeware

Description

This extension allows to draw lines, rectangles, ellipses, polygons and curves with line style. Public methods are:

SetLineStyle($style: array)

Sets line style. Parameters are:

- style: an array with the following possible keys:

. width: width of the line in user units.
. cap: type of cap to put on the line (butt, round, square). The difference between "square" and "butt" is that "square" projects a flat end past the end of the line.
. join: miter, round, or bevel.
. dash: dash pattern. Is 0 (without dash) or array with series of length values, which are the lengths of the on and off dashes.
. phase: modifier of the dash pattern which is used to shift the point at which the pattern starts.
. color: draw color. Array with components (red, green, blue).

Line($x1: float, $y1: float, $x2: float, $y2: float, $style: array)

Draws a line. Overrides the method from FPDF. Parameters are:

- x1, y1: start point.
- x2, y2: end point.
- style: line style (array like for SetLineStyle).

Rect($x: float, $y: float, $w: float, $h: float, $style: string, $border_style: array, $fill_color: array)

Draws a rectangle. Overrides the method from FPDF. Parameters are:

- x, y: top left corner.
- w, h: width and height.
- style: style of rectangle (draw and/or fill: D, F, DF, FD).
- border_style: border style of rectangle. Array with index: (all => style) for all borders, or (L => style, T => style, R => style, B => style) for each border. Style is an array like for SetLineStyle.
- fill_color: fill color. Array with components (red, green, blue).

Curve($x0: float, $y0: float, $x1: float, $y1: float, $x2: float, $y2: float, $x3: float, $y3: float, $style: string, $line_style: array, $fill_color: array)

Draws a Bézier curve. Parameters are:

- x0, y0: start point.
- x1, y1: control point 1.
- x2, y2: control point 2.
- x3, y3: end point.
- style: style of rectangle (draw and/or fill: D, F, DF, FD).
- line_style: line style for curve. Array like for SetLineStyle.
- fill_color: fill color. Array with components (red, green, blue).

Ellipse($x0: float, $y0: float, $rx: float, $ry: float, $angle: float, $astart: float, $afinish: float, $style: string, $line_style: array, $fill_color: array, $nSeg: integer)

Draws an ellipse. Parameters are:

- x0, y0: center point.
- rx, ry: horizontal and vertical radius (if ry is 0, this is a circle).
- angle: orientation angle (anti-clockwise).
- astart: start angle.
- afinish: finish angle.
- style: style of ellipse (draw and/or fill: D, F, DF, FD, C (D + close)).
- line_style: line style for ellipse. Array like for SetLineStyle.
- fill_color: fill color. Array with components (red, green, blue).
- nSeg: ellipse is made up of nSeg Bézier curves.

Circle($x0: float, $y0: float, $r: float, $astart: float, $afinish: float, $style: string, $line_style: array, $fill_color: array, $nSeg: integer)

Draws a circle. Parameters are:

- x0, y0: center point.
- r: radius.
- astart: start angle.
- afinish: finish angle.
- style: style of circle (draw and/or fill: D, F, DF, FD, C (D + close)).
- line_style: line style for circle. Array like for SetLineStyle.
- fill_color: fill color. Array with components (red, green, blue).
- nSeg: circle is made up of nSeg Bézier curves.

Polygon($p: array, $style: string, $line_style: array, $fill_color: array)

Draws a polygon. Parameters are:

- p: points. Array with values x0, y0, x1, y1, ..., x(np-1), y(np-1).
- style: style of polygon (draw and/or fill: D, F, DF, FD).
- line_style: line style. Array with index (all => style) for all borders, or (0..np-1 => style) for each border. Style is an array like for SetLineStyle.
- fill_color: fill color. Array with components (red, green, blue)

RegularPolygon($x0: float, $y0: float, $r: float, $ns: Integer, $angle: float, $circle: boolean, $style: string, $line_style: array, $fill_color: array, $circle_style: array, $circle_line_style: array, $circle_fill_color: array)

Draws a regular polygon. Parameters are:

- x0, y0: center point.
- r: radius of circumscribed circle.
- ns: number of sides.
- angle: orientation angle (anti-clockwise).
- circle: draw circumscribed circle or not.
- style: style of polygon (draw and/or fill: D, F, DF, FD).
- line_style: line style. Array with index (all => style) for all borders, or (0..ns-1 => style) for each border. Style is an array like for SetLineStyle.
- fill_color: fill color. Array with components (red, green, blue).
- circle_style: style of circumscribed circle (draw and/or fill: D, F, DF, FD).
- circle_line_style: line style for circumscribed circle. Array like for SetLineStyle.
- circle_fill_color: fill color for circumscribed circle. Array with components (red, green, blue).

StarPolygon($x0: float, $y0: float, $r: float, $nv: Integer, $ng: Integer, $angle: float, $circle: boolean, $style: string, $line_style: array, $fill_color: array, $circle_style: array, $circle_line_style: array, $circle_fill_color: array)

Draws a star polygon. Parameters are:

- x0, y0: center point.
- r: radius of circumscribed circle.
- nv: number of vertices.
- ng: number of gaps (ng % nv = 1 => regular polygon).
- angle: orientation angle (anti-clockwise).
- circle: draw circumscribed circle or not.
- style: style of polygon (draw and/or fill) (D, F, DF, FD).
- line_style: line style. Array with index (all => style) for all borders, or (0..n-1 => style) for each border. Style is an array like for SetLineStyle.
- fill_color: fill color. Array with components (red, green, blue).
- circle_style: style of circumscribed circle (draw and/or fill) (D, F, DF, FD) (if draw).
- circle_line_style: line style for circumscribed circle. Array like for SetLineStyle (if draw).
- circle_fill_color: fill color for circumscribed circle. Array with components (red, green, blue).

RoundedRect($x: float, $y: float, $w: float, $h: float, $r: float, $round_corner: string, $style: string, $border_style: string, $fill_color: array)

Draws a rounded rectangle. Parameters are:

- x, y: top left corner.
- w, h: width and height.
- r: radius of the rounded corners.
- round_corner: draws rounded corners or not. String with a 0 (not rounded i-corner) or 1 (rounded i-corner) in i-position. Positions are, in order: top left, top right, bottom right and bottom left.
- style: style of rectangle (draw and/or fill: D, F, DF, FD).
- border_style: border style of rectangle. Array like for SetLineStyle.
- fill_color: fill color. Array with components (red, green, blue).

Source

<?php
require('fpdf.php');

class
PDF_Draw extends FPDF {
    // Sets line style
    // Parameters:
    // - style: Line style. Array with keys among the following:
    //   . width: Width of the line in user units
    //   . cap: Type of cap to put on the line (butt, round, square). The difference between 'square' and 'butt' is that 'square' projects a flat end past the end of the line.
    //   . join: miter, round or bevel
    //   . dash: Dash pattern. Is 0 (without dash) or array with series of length values, which are the lengths of the on and off dashes.
    //           For example: (2) represents 2 on, 2 off, 2 on , 2 off ...
    //                        (2, 1) is 2 on, 1 off, 2 on, 1 off.. etc
    //   . phase: Modifier of the dash pattern which is used to shift the point at which the pattern starts
    //   . color: Draw color. Array with components (red, green, blue)
    function SetLineStyle($style) {
        extract($style);
        if (isset($width)) {
            $width_prev = $this->LineWidth;
            $this->SetLineWidth($width);
            $this->LineWidth = $width_prev;
        }
        if (isset($cap)) {
            $ca = array('butt' => 0, 'round'=> 1, 'square' => 2);
            if (isset($ca[$cap]))
                $this->_out($ca[$cap] . ' J');
        }
        if (isset($join)) {
            $ja = array('miter' => 0, 'round' => 1, 'bevel' => 2);
            if (isset($ja[$join]))
                $this->_out($ja[$join] . ' j');
        }
        if (isset($dash)) {
            $dash_string = '';
            if ($dash) {
                if(ereg('^.+, ', $dash))
                    $tab = explode(', ', $dash);
                else
                    $tab
= array($dash);
                $dash_string = '';
                foreach ($tab as $i => $v) {
                    if ($i > 0)
                        $dash_string .= ' ';
                    $dash_string .= sprintf('%.2f', $v);
                }
            }
            if (!isset($phase) || !$dash)
                $phase = 0;
            $this->_out(sprintf('[%s] %.2f d', $dash_string, $phase));
        }
        if (isset($color)) {
            list($r, $g, $b) = $color;
            $this->SetDrawColor($r, $g, $b);
        }
    }

    // Draws a line
    // Parameters:
    // - x1, y1: Start point
    // - x2, y2: End point
    // - style: Line style. Array like for SetLineStyle
    function Line($x1, $y1, $x2, $y2, $style = null) {
        if ($style)
            $this->SetLineStyle($style);
        parent::Line($x1, $y1, $x2, $y2);
    }

    // Draws a rectangle
    // Parameters:
    // - x, y: Top left corner
    // - w, h: Width and height
    // - style: Style of rectangle (draw and/or fill: D, F, DF, FD)
    // - border_style: Border style of rectangle. Array with some of this index
    //   . all: Line style of all borders. Array like for SetLineStyle
    //   . L: Line style of left border. null (no border) or array like for SetLineStyle
    //   . T: Line style of top border. null (no border) or array like for SetLineStyle
    //   . R: Line style of right border. null (no border) or array like for SetLineStyle
    //   . B: Line style of bottom border. null (no border) or array like for SetLineStyle
    // - fill_color: Fill color. Array with components (red, green, blue)
    function Rect($x, $y, $w, $h, $style = '', $border_style = null, $fill_color = null) {
        if (!(false === strpos($style, 'F')) && $fill_color) {
            list($r, $g, $b) = $fill_color;
            $this->SetFillColor($r, $g, $b);
        }
        switch ($style) {
            case 'F':
                $border_style = null;
                parent::Rect($x, $y, $w, $h, $style);
                break;
            case 'DF': case 'FD':
                if (!$border_style || isset($border_style['all'])) {
                    if (isset($border_style['all'])) {
                        $this->SetLineStyle($border_style['all']);
                        $border_style = null;
                    }
                } else
                    $style = 'F';
                parent::Rect($x, $y, $w, $h, $style);
                break;
            default:
                if (!$border_style || isset($border_style['all'])) {
                    if (isset($border_style['all']) && $border_style['all']) {
                        $this->SetLineStyle($border_style['all']);
                        $border_style = null;
                    }
                    parent::Rect($x, $y, $w, $h, $style);
                }
                break;
        }
        if ($border_style) {
            if (isset($border_style['L']) && $border_style['L'])
                $this->Line($x, $y, $x, $y + $h, $border_style['L']);
            if (isset($border_style['T']) && $border_style['T'])
                $this->Line($x, $y, $x + $w, $y, $border_style['T']);
            if (isset($border_style['R']) && $border_style['R'])
                $this->Line($x + $w, $y, $x + $w, $y + $h, $border_style['R']);
            if (isset($border_style['B']) && $border_style['B'])
                $this->Line($x, $y + $h, $x + $w, $y + $h, $border_style['B']);
        }
    }

    // Draws a Bézier curve (the Bézier curve is tangent to the line between the control points at either end of the curve)
    // Parameters:
    // - x0, y0: Start point
    // - x1, y1: Control point 1
    // - x2, y2: Control point 2
    // - x3, y3: End point
    // - style: Style of rectangule (draw and/or fill: D, F, DF, FD)
    // - line_style: Line style for curve. Array like for SetLineStyle
    // - fill_color: Fill color. Array with components (red, green, blue)
    function Curve($x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3, $style = '', $line_style = null, $fill_color = null) {
        if (!(false === strpos($style, 'F')) && $fill_color) {
            list($r, $g, $b) = $fill_color;
            $this->SetFillColor($r, $g, $b);
        }
        switch ($style) {
            case 'F':
                $op = 'f';
                $line_style = null;
                break;
            case 'FD': case 'DF':
                $op = 'B';
                break;
            default:
                $op = 'S';
                break;
        }
        if ($line_style)
            $this->SetLineStyle($line_style);

        $this->_Point($x0, $y0);
        $this->_Curve($x1, $y1, $x2, $y2, $x3, $y3);
        $this->_out($op);
    }

    // Draws an ellipse
    // Parameters:
    // - x0, y0: Center point
    // - rx, ry: Horizontal and vertical radius (if ry = 0, draws a circle)
    // - angle: Orientation angle (anti-clockwise)
    // - astart: Start angle
    // - afinish: Finish angle
    // - style: Style of ellipse (draw and/or fill: D, F, DF, FD, C (D + close))
    // - line_style: Line style for ellipse. Array like for SetLineStyle
    // - fill_color: Fill color. Array with components (red, green, blue)
    // - nSeg: Ellipse is made up of nSeg Bézier curves
    function Ellipse($x0, $y0, $rx, $ry = 0, $angle = 0, $astart = 0, $afinish = 360, $style = '', $line_style = null, $fill_color = null, $nSeg = 8) {
        if ($rx) {
            if (!(false === strpos($style, 'F')) && $fill_color) {
                list($r, $g, $b) = $fill_color;
                $this->SetFillColor($r, $g, $b);
            }
            switch ($style) {
                case 'F':
                    $op = 'f';
                    $line_style = null;
                    break;
                case 'FD': case 'DF':
                    $op = 'B';
                    break;
                case 'C':
                    $op = 's'; // small 's' means closing the path as well
                    break;
                default:
                    $op = 'S';
                    break;
            }
            if ($line_style)
                $this->SetLineStyle($line_style);
            if (!$ry)
                $ry = $rx;
            $rx *= $this->k;
            $ry *= $this->k;
            if ($nSeg < 2)
                $nSeg = 2;

            $astart = deg2rad((float) $astart);
            $afinish = deg2rad((float) $afinish);
            $totalAngle = $afinish - $astart;

            $dt = $totalAngle/$nSeg;
            $dtm = $dt/3;

            $x0 *= $this->k;
            $y0 = ($this->h - $y0) * $this->k;
            if ($angle != 0) {
                $a = -deg2rad((float) $angle);
                $this->_out(sprintf('q %.2f %.2f %.2f %.2f %.2f %.2f cm', cos($a), -1 * sin($a), sin($a), cos($a), $x0, $y0));
                $x0 = 0;
                $y0 = 0;
            }

            $t1 = $astart;
            $a0 = $x0 + ($rx * cos($t1));
            $b0 = $y0 + ($ry * sin($t1));
            $c0 = -$rx * sin($t1);
            $d0 = $ry * cos($t1);
            $this->_Point($a0 / $this->k, $this->h - ($b0 / $this->k));
            for ($i = 1; $i <= $nSeg; $i++) {
                // Draw this bit of the total curve
                $t1 = ($i * $dt) + $astart;
                $a1 = $x0 + ($rx * cos($t1));
                $b1 = $y0 + ($ry * sin($t1));
                $c1 = -$rx * sin($t1);
                $d1 = $ry * cos($t1);
                $this->_Curve(($a0 + ($c0 * $dtm)) / $this->k,
                            $this->h - (($b0 + ($d0 * $dtm)) / $this->k),
                            ($a1 - ($c1 * $dtm)) / $this->k,
                            $this->h - (($b1 - ($d1 * $dtm)) / $this->k),
                            $a1 / $this->k,
                            $this->h - ($b1 / $this->k));
                $a0 = $a1;
                $b0 = $b1;
                $c0 = $c1;
                $d0 = $d1;
            }
            $this->_out($op);
            if ($angle !=0)
                $this->_out('Q');
        }
    }

    // Draws a circle
    // Parameters:
    // - x0, y0: Center point
    // - r: Radius
    // - astart: Start angle
    // - afinish: Finish angle
    // - style: Style of circle (draw and/or fill) (D, F, DF, FD, C (D + close))
    // - line_style: Line style for circle. Array like for SetLineStyle
    // - fill_color: Fill color. Array with components (red, green, blue)
    // - nSeg: Ellipse is made up of nSeg Bézier curves
    function Circle($x0, $y0, $r, $astart = 0, $afinish = 360, $style = '', $line_style = null, $fill_color = null, $nSeg = 8) {
        $this->Ellipse($x0, $y0, $r, 0, 0, $astart, $afinish, $style, $line_style, $fill_color, $nSeg);
    }

    // Draws a polygon
    // Parameters:
    // - p: Points. Array with values x0, y0, x1, y1, ..., x(np-1), y(np - 1)
    // - style: Style of polygon (draw and/or fill) (D, F, DF, FD)
    // - line_style: Line style. Array with one of this index
    //   . all: Line style of all lines. Array like for SetLineStyle
    //   . 0..np-1: Line style of each line. Item is 0 (not line) or like for SetLineStyle
    // - fill_color: Fill color. Array with components (red, green, blue)
    function Polygon($p, $style = '', $line_style = null, $fill_color = null) {
        $np = count($p) / 2;
        if (!(false === strpos($style, 'F')) && $fill_color) {
            list($r, $g, $b) = $fill_color;
            $this->SetFillColor($r, $g, $b);
        }
        switch ($style) {
            case 'F':
                $line_style = null;
                $op = 'f';
                break;
            case 'FD': case 'DF':
                $op = 'B';
                break;
            default:
                $op = 'S';
                break;
        }
        $draw = true;
        if ($line_style)
            if (isset($line_style['all']))
                $this->SetLineStyle($line_style['all']);
            else { // 0 .. (np - 1), op = {B, S}
                $draw = false;
                if ('B' == $op) {
                    $op = 'f';
                    $this->_Point($p[0], $p[1]);
                    for ($i = 2; $i < ($np * 2); $i = $i + 2)
                        $this->_Line($p[$i], $p[$i + 1]);
                    $this->_Line($p[0], $p[1]);
                    $this->_out($op);
                }
                $p[$np * 2] = $p[0];
                $p[($np * 2) + 1] = $p[1];
                for ($i = 0; $i < $np; $i++)
                    if (!empty($line_style[$i]))
                        $this->Line($p[$i * 2], $p[($i * 2) + 1], $p[($i * 2) + 2], $p[($i * 2) + 3], $line_style[$i]);
            }

        if ($draw) {
            $this->_Point($p[0], $p[1]);
            for ($i = 2; $i < ($np * 2); $i = $i + 2)
                $this->_Line($p[$i], $p[$i + 1]);
            $this->_Line($p[0], $p[1]);
            $this->_out($op);
        }
    }

    // Draws a regular polygon
    // Parameters:
    // - x0, y0: Center point
    // - r: Radius of circumscribed circle
    // - ns: Number of sides
    // - angle: Orientation angle (anti-clockwise)
    // - circle: Draw circumscribed circle or not
    // - style: Style of polygon (draw and/or fill) (D, F, DF, FD)
    // - line_style: Line style. Array with one of this index
    //   . all: Line style of all lines. Array like for SetLineStyle
    //   . 0..ns-1: Line style of each line. Item is 0 (not line) or like for SetLineStyle
    // - fill_color: Fill color. Array with components (red, green, blue)
    // - circle_style: Style of circumscribed circle (draw and/or fill) (D, F, DF, FD) (if draw)
    // - circle_line_style: Line style for circumscribed circle. Array like for SetLineStyle (if draw)
    // - circle_fill_color: Fill color for circumscribed circle. Array with components (red, green, blue) (if draw fill circle)
    function RegularPolygon($x0, $y0, $r, $ns, $angle = 0, $circle = false, $style = '', $line_style = null, $fill_color = null, $circle_style = '', $circle_line_style = null, $circle_fill_color = null) {
        if ($ns < 3)
            $ns = 3;
        if ($circle)
            $this->Circle($x0, $y0, $r, 0, 360, $circle_style, $circle_line_style, $circle_fill_color);
        $p = null;
        for ($i = 0; $i < $ns; $i++) {
            $a = $angle + ($i * 360 / $ns);
            $a_rad = deg2rad((float) $a);
            $p[] = $x0 + ($r * sin($a_rad));
            $p[] = $y0 + ($r * cos($a_rad));
        }
        $this->Polygon($p, $style, $line_style, $fill_color);
    }

    // Draws a star polygon
    // Parameters:
    // - x0, y0: Center point
    // - r: Radius of circumscribed circle
    // - nv: Number of vertices
    // - ng: Number of gaps (ng % nv = 1 => regular polygon)
    // - angle: Orientation angle (anti-clockwise)
    // - circle: Draw circumscribed circle or not
    // - style: Style of polygon (draw and/or fill) (D, F, DF, FD)
    // - line_style: Line style. Array with one of this index
    //   . all: Line style of all lines. Array like for SetLineStyle
    //   . 0..n-1: Line style of each line. Item is 0 (not line) or like for SetLineStyle
    // - fill_color: Fill color. Array with components (red, green, blue)
    // - circle_style: Style of circumscribed circle (draw and/or fill) (D, F, DF, FD) (if draw)
    // - circle_line_style: Line style for circumscribed circle. Array like for SetLineStyle (if draw)
    // - circle_fill_color: Fill color for circumscribed circle. Array with components (red, green, blue) (if draw fill circle)
    function StarPolygon($x0, $y0, $r, $nv, $ng, $angle = 0, $circle = false, $style = '', $line_style = null, $fill_color = null, $circle_style = '', $circle_line_style = null, $circle_fill_color = null) {
        if ($nv < 2)
            $nv = 2;
        if ($circle)
            $this->Circle($x0, $y0, $r, 0, 360, $circle_style, $circle_line_style, $circle_fill_color);
        $p2 = null;
        $visited = null;
        for ($i = 0; $i < $nv; $i++) {
            $a = $angle + ($i * 360 / $nv);
            $a_rad = deg2rad((float) $a);
            $p2[] = $x0 + ($r * sin($a_rad));
            $p2[] = $y0 + ($r * cos($a_rad));
            $visited[] = false;
        }
        $p = null;
        $i = 0;
        do {
            $p[] = $p2[$i * 2];
            $p[] = $p2[($i * 2) + 1];
            $visited[$i] = true;
            $i += $ng;
            $i %= $nv;
        } while (!$visited[$i]);
        $this->Polygon($p, $style, $line_style, $fill_color);
    }

    // Draws a rounded rectangle
    // Parameters:
    // - x, y: Top left corner
    // - w, h: Width and height
    // - r: Radius of the rounded corners
    // - round_corner: Draws rounded corner or not. String with a 0 (not rounded i-corner) or 1 (rounded i-corner) in i-position. Positions are, in order and begin to 0: top left, top right, bottom right and bottom left
    // - style: Style of rectangle (draw and/or fill) (D, F, DF, FD)
    // - border_style: Border style of rectangle. Array like for SetLineStyle
    // - fill_color: Fill color. Array with components (red, green, blue)
    function RoundedRect($x, $y, $w, $h, $r, $round_corner = '1111', $style = '', $border_style = null, $fill_color = null) {
        if ('0000' == $round_corner) // Not rounded
            $this->Rect($x, $y, $w, $h, $style, $border_style, $fill_color);
        else { // Rounded
            if (!(false === strpos($style, 'F')) && $fill_color) {
                list($red, $g, $b) = $fill_color;
                $this->SetFillColor($red, $g, $b);
            }
            switch ($style) {
                case 'F':
                    $border_style = null;
                    $op = 'f';
                    break;
                case 'FD': case 'DF':
                    $op = 'B';
                    break;
                default:
                    $op = 'S';
                    break;
            }
            if ($border_style)
                $this->SetLineStyle($border_style);

            $MyArc = 4 / 3 * (sqrt(2) - 1);

            $this->_Point($x + $r, $y);
            $xc = $x + $w - $r;
            $yc = $y + $r;
            $this->_Line($xc, $y);
            if ($round_corner[0])
                $this->_Curve($xc + ($r * $MyArc), $yc - $r, $xc + $r, $yc - ($r * $MyArc), $xc + $r, $yc);
            else
                $this
->_Line($x + $w, $y);

            $xc = $x + $w - $r ;
            $yc = $y + $h - $r;
            $this->_Line($x + $w, $yc);

            if ($round_corner[1])
                $this->_Curve($xc + $r, $yc + ($r * $MyArc), $xc + ($r * $MyArc), $yc + $r, $xc, $yc + $r);
            else
                $this
->_Line($x + $w, $y + $h);

            $xc = $x + $r;
            $yc = $y + $h - $r;
            $this->_Line($xc, $y + $h);
            if ($round_corner[2])
                $this->_Curve($xc - ($r * $MyArc), $yc + $r, $xc - $r, $yc + ($r * $MyArc), $xc - $r, $yc);
            else
                $this
->_Line($x, $y + $h);

            $xc = $x + $r;
            $yc = $y + $r;
            $this->_Line($x, $yc);
            if ($round_corner[3])
                $this->_Curve($xc - $r, $yc - ($r * $MyArc), $xc - ($r * $MyArc), $yc - $r, $xc, $yc - $r);
            else {
                $this->_Line($x, $y);
                $this->_Line($x + $r, $y);
            }
            $this->_out($op);
        }
    }

    /* PRIVATE METHODS */

    // Sets a draw point
    // Parameters:
    // - x, y: Point
    function _Point($x, $y) {
        $this->_out(sprintf('%.2f %.2f m', $x * $this->k, ($this->h - $y) * $this->k));
    }

    // Draws a line from last draw point
    // Parameters:
    // - x, y: End point
    function _Line($x, $y) {
        $this->_out(sprintf('%.2f %.2f l', $x * $this->k, ($this->h - $y) * $this->k));
    }

    // Draws a Bézier curve from last draw point
    // Parameters:
    // - x1, y1: Control point 1
    // - x2, y2: Control point 2
    // - x3, y3: End point
    function _Curve($x1, $y1, $x2, $y2, $x3, $y3) {
        $this->_out(sprintf('%.2f %.2f %.2f %.2f %.2f %.2f c', $x1 * $this->k, ($this->h - $y1) * $this->k, $x2 * $this->k, ($this->h - $y2) * $this->k, $x3 * $this->k, ($this->h - $y3) * $this->k));
    }

}

?>

Example

<?php
require_once('draw.php');

$pdf = new PDF_Draw();
$pdf->SetFont('arial', '', 10);
$pdf->AddPage();

$style = array('width' => 0.5, 'cap' => 'butt', 'join' => 'miter', 'dash' => '10, 20, 5, 10', 'phase' => 10, 'color' => array(255, 0, 0));
$style2 = array('width' => 0.5, 'cap' => 'butt', 'join' => 'miter', 'dash' => 0, 'color' => array(255, 0, 0));
$style3 = array('width' => 1, 'cap' => 'round', 'join' => 'round', 'dash' => '2, 10', 'color' => array(255, 0, 0));
$style4 = array('L' => 0,
                'T' => array('width' => 0.25, 'cap' => 'butt', 'join' => 'miter', 'dash' => '20, 10', 'phase' => 10, 'color' => array(100, 100, 255)),
                'R' => array('width' => 0.50, 'cap' => 'round', 'join' => 'miter', 'dash' => 0, 'color' => array(50, 50, 127)),
                'B' => array('width' => 0.75, 'cap' => 'square', 'join' => 'miter', 'dash' => '30, 10, 5, 10'));
$style5 = array('width' => 0.25, 'cap' => 'butt', 'join' => 'miter', 'dash' => 0, 'color' => array(0, 0, 0));
$style6 = array('width' => 0.5, 'cap' => 'butt', 'join' => 'miter', 'dash' => '10, 10', 'color' => array(0, 255, 0));
$style7 = array('width' => 0.5, 'cap' => 'butt', 'join' => 'miter', 'dash' => 0, 'color' => array(200, 200, 0));

// Line
$pdf->Text(5, 7, 'Line examples');
$pdf->Line(5, 10, 80, 30, $style);
$pdf->Line(5, 10, 5, 30, $style2);
$pdf->Line(5, 10, 80, 10, $style3);

// Rect
$pdf->Text(100, 7, 'Rectangle examples');
$pdf->Rect(100, 10, 40, 20, 'DF', $style4, array(220, 220, 200));
$pdf->Rect(145, 10, 40, 20, 'D', array('all' => $style3));

// Curve
$pdf->Text(5, 37, 'Curve examples');
$pdf->Curve(5, 40, 30, 55, 70, 45, 60, 75, null, $style6);
$pdf->Curve(80, 40, 70, 75, 150, 45, 100, 75, 'F', $style6);
$pdf->Curve(140, 40, 150, 55, 180, 45, 200, 75, 'DF', $style6, array(200, 220, 200));

// Circle and ellipse
$pdf->Text(5, 82, 'Circle and ellipse examples');
$pdf->SetLineStyle($style5);
$pdf->Circle(25, 105, 20);
$pdf->Circle(25, 105, 10, 90, 180, null, $style6);
$pdf->Circle(25, 105, 10, 270, 360, 'F');
$pdf->Circle(25, 105, 10, 270, 360, 'C', $style6);

$pdf->SetLineStyle($style5);
$pdf->Ellipse(100, 105, 40, 20);
$pdf->Ellipse(100, 105, 20, 10, 0, 90, 180, null, $style6);
$pdf->Ellipse(100, 105, 20, 10, 0, 270, 360, 'DF', $style6);

$pdf->SetLineStyle($style5);
$pdf->Ellipse(175, 105, 30, 15, 45);
$pdf->Ellipse(175, 105, 15, 7.50, 45, 90, 180, null, $style6);
$pdf->Ellipse(175, 105, 15, 7.50, 45, 270, 360, 'F', $style6, array(220, 200, 200));

// Polygon
$pdf->Text(5, 132, 'Polygon examples');
$pdf->SetLineStyle(array('width' => 0.5, 'cap' => 'butt', 'join' => 'miter', 'dash' => 0, 'color' => array(0, 0, 0)));
$pdf->Polygon(array(5, 135, 45, 135, 15, 165));
$pdf->Polygon(array(60, 135, 80, 135, 80, 155, 70, 165, 50, 155), 'DF', array($style6, $style7, $style7, 0, $style6));
$pdf->Polygon(array(120, 135, 140, 135, 150, 155, 110, 155), 'D', array($style6, 0, $style7, $style6));
$pdf->Polygon(array(160, 135, 190, 155, 170, 155, 200, 160, 160, 165), 'DF', array('all' => $style6), array(220, 220, 220));

// Regular polygon
$pdf->Text(5, 172, 'Regular polygon examples');
$pdf->SetLineStyle($style5);
$pdf->RegularPolygon(20, 190, 15, 6, 0, 1, 'F');
$pdf->RegularPolygon(55, 190, 15, 6);
$pdf->RegularPolygon(55, 190, 10, 6, 45, 0, 'DF', array($style6, 0, $style7, 0, $style7, $style7, $style6));
$pdf->RegularPolygon(90, 190, 15, 3, 0, 1, 'DF', array('all' => $style5), array(200, 220, 200), 'F', array(255, 200, 200));
$pdf->RegularPolygon(125, 190, 15, 4, 30, 1, null, array('all' => $style5), null, null, $style6);
$pdf->RegularPolygon(160, 190, 15, 10);

// Star polygon
$pdf->Text(5, 212, 'Star polygon examples');
$pdf->SetLineStyle($style5);
$pdf->StarPolygon(20, 230, 15, 20, 3, 0, 1, 'F');
$pdf->StarPolygon(55, 230, 15, 12, 5);
$pdf->StarPolygon(55, 230, 7, 12, 5, 45, 0, 'DF', array($style6, 0, $style7, 0, $style7, $style7, $style6));
$pdf->StarPolygon(90, 230, 15, 20, 6, 0, 1, 'DF', array('all' => $style5), array(220, 220, 200), 'F', array(255, 200, 200));
$pdf->StarPolygon(125, 230, 15, 5, 2, 30, 1, null, array('all' => $style5), null, null, $style6);
$pdf->StarPolygon(160, 230, 15, 10, 3);
$pdf->StarPolygon(160, 230, 7, 50, 26);

// Rounded rectangle
$pdf->Text(5, 252, 'Rounded rectangle examples');
$pdf->SetLineStyle(array('width' => 0.5, 'cap' => 'butt', 'join' => 'miter', 'dash' => 0, 'color' => array(0, 0, 0)));
$pdf->RoundedRect(5, 255, 40, 30, 3.50, '1111', 'DF');
$pdf->RoundedRect(50, 255, 40, 30, 6.50, '1000');
$pdf->RoundedRect(95, 255, 40, 30, 10.0, '1111', null, $style6);
$pdf->RoundedRect(140, 255, 40, 30, 8.0, '0101', 'DF', $style6, array(200, 200, 200));

$pdf->Output();
?>

View the result here.

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