PHP 5.6.0 released

CairoContext::curveTo

cairo_curve_to

(PECL cairo >= 0.1.0)

CairoContext::curveTo -- cairo_curve_toAdds a curve

Descrizione

Stile orientato agli oggetti (method):

public void CairoContext::curveTo ( float $x1 , float $y1 , float $x2 , float $y2 , float $x3 , float $y3 )

Stile procedurale:

void cairo_curve_to ( CairoContext $context , float $x1 , float $y1 , float $x2 , float $y2 , float $x3 , float $y3 )

Adds a cubic Bezier spline to the path from the current point to position x3 ,y3 in user-space coordinates, using x1, y1 and x2, y2 as the control points. After this call the current point will be x3, y3.

If there is no current point before the call to CairoContext::curveTo() this function will behave as if preceded by a call to CairoContext::moveTo() (x1, y1).

Elenco dei parametri

context

A valid CairoContext object created with CairoContext::__construct() or cairo_create()

x1

First control point in the x axis for the curve

y1

First control point in the y axis for the curve

x2

Second control point in x axis for the curve

y2

Second control point in y axis for the curve

x3

Final point in the x axis for the curve

y3

Final point in the y axis for the curve

Valori restituiti

Nessun valore viene restituito.

Esempi

Example #1 Stile orientato agli oggetti

<?php
$s 
= new CairoImageSurface(CairoFormat::ARGB32100100);
$c = new CairoContext($s);

$c->setSourceRgb(000);

$c->paint();

$c->moveTo(1050); 
$c->setLineWidth(5);
$c->setSourceRgb(.101);
$c->curveTo(208080209050); 
$c->stroke();

$s->writeToPng(dirname(__FILE__) . '/curveTo.png');
?>

Example #2 Stile procedurale

<?php

$s 
cairo_image_surface_create(CAIRO_SURFACE_TYPE_IMAGE100100);
$c cairo_create($s);

cairo_set_source_rgb($c000);

cairo_paint($c);

cairo_move_to($c1050);
cairo_set_line_width($c5);
cairo_set_source_rgb($c.101);
cairo_curve_to($c208080209050);
cairo_stroke($c);

cairo_surface_write_to_png($sdirname(__FILE__) . '/curve_to.png');
?>

Vedere anche:

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