File: example/cubicBezierBox.php

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File: example/cubicBezierBox.php
Role: Example script
Content type: text/plain
Description: Example script
Class: PHP SVG Magick Library
Compose vectorial graphics in SVG format
Author: By
Last change: Fixing example file errors.
Date: 3 years ago
Size: 2,372 bytes
 

 

Contents

Class file image Download
<?php
use nstdio\svg\container\G;
use
nstdio\svg\container\SVG;
use
nstdio\svg\shape\Circle;
use
nstdio\svg\shape\Path;
use
nstdio\svg\shape\Rect;
use
nstdio\svg\text\Text;
use
nstdio\svg\util\Bezier;

require_once
__DIR__ . '/../vendor/autoload.php';
$p0x = 90;
$p0y = 200;

$p1x = 90;
$p1y = 380;

$p2x = 450;
$p2y = 200;

$p3x = 450;
$p3y = 380;

drawCubic(820, 239, 302, 127, 411, 237, 548, 327);
drawCubic(208, 120, 634, 421, 728, 276, 342, 69);

for (
$i = 0; $i < 5; $i++) {
   
drawCubic(
       
mt_rand(0, 980),
       
mt_rand(0, 480),
       
mt_rand(0, 980),
       
mt_rand(0, 480),
       
mt_rand(0, 980),
       
mt_rand(0, 480),
       
mt_rand(0, 980),
       
mt_rand(0, 480)
    );
}

function
drawCubic($p0x, $p0y, $p1x, $p1y, $p2x, $p2y, $p3x, $p3y)
{
   
$svg = new SVG(1000, 600);
   
$svg->getElement()->removeAttribute('viewBox');

   
Path::create($svg, $p0x, $p0y)
        ->
lineTo($p1x, $p1y)
        ->
lineTo($p2x, $p2y)
        ->
lineTo($p3x, $p3y)
        ->
apply(['fill' => 'none', 'stroke' => 'lightgray']);

   
Path::create($svg, $p0x, $p0y)
        ->
curveTo($p1x, $p1y, $p2x, $p2y, $p3x, $p3y)
        ->
apply(['fill' => 'none', 'stroke' => 'red']);


   
$fz = G::create($svg)->apply(['font-size' => '10px']);

   
$blackGroup = G::create($fz)->apply(['fill' => 'black']);

   
addCtrlPt($blackGroup, $p0x, $p0y, -20, 15, 'P0');
   
addCtrlPt($blackGroup, $p1x, $p1y, -20, -10, 'P1');
   
addCtrlPt($blackGroup, $p2x, $p2y, -20, -10, 'P2');
   
addCtrlPt($blackGroup, $p3x, $p3y, -20, 15, 'P3');

   
drawBBox($svg, $p0x, $p0y, $p1x, $p1y, $p2x, $p2y, $p3x, $p3y);

   
Rect::create($svg, 498, 998, 1, 1)->apply(['fill' => 'none', 'stroke' => 'blue', 'stroke-width' => '1']);

    echo
$svg;
}

function
addCtrlPt($parent, $x, $y, $dx, $dy, $ptName)
{
   
Circle::create($parent, $x, $y, 3);
   
Text::create($parent, "$ptName($x, $y)")
        ->
apply(['x' => $x + $dx, 'y' => $y + $dy]);
}

function
drawBBox($parent, $p0x, $p0y, $p1x, $p1y, $p2x, $p2y, $p3x, $p3y)
{
   
$box = Bezier::cubicBBox($p0x, $p0y, $p1x, $p1y, $p2x, $p2y, $p3x, $p3y);
   
Rect::createFromPointsArray($parent, $box)
        ->
apply([
           
'stroke' => 'gray',
           
'stroke-dasharray' => '8 8',
           
'stroke-linecap' => 'round',
           
'fill' => 'blue',
           
'fill-opacity' => 0.1,
        ]);
}


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