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Draw the line weight and draw the coordinates of the change

Source: Internet
Author: User
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<! DOCTYPE html>
lang= "en" >
<meta charset= "UTF-8" >
<title></title>
<body>
<canvas id= "mycas" width= "height=" ></canvas>
<div>
<input type= "button" value= " Draw path 1" onclick= "lujing1 ()"/>
<input type= "button" value= " draw gradient 1" onclick= "jianbian1 ()"/>
<input type= "button" value= " draw gradient 2" onclick= "jianbian2 ()"/>
<input type= "button" value= " draw gradient 3" onclick= "jianbian3 ()"/>
<input type= "button" value= " draw gradient 4" onclick= "jianbian4 ()"/>
</div>
<div>
<input type= "button" value= " Draw line weight 1" onclick= "xiantiao ()"/>
<input type= "button" value= " plot the changed coordinates" onclick= "Bianhua ()"/>
<input type= "button" value= " Draw Zoom Effect" onclick= "bianhua2 ()"/>
<input type= "button" value= " draw rotation effect" onclick= "bianhua3 ()"/>
</div>
<script>
function Bianhua3 () {
var cas = document.getElementById ("Mycas");
var g = Cas.getcontext ("2d");
G.translate (200, 200);
for (var i=0; i<36; i++) {
G.rotate (10*math.pi/180);
G.fillrect (100, 100, 100,100);
}
}
function Bianhua2 () {
var cas = document.getElementById ("Mycas");
var g = Cas.getcontext ("2d");
G.fillrect (20, 20, 50,50);
G.fillstyle= "Blue";
G.translate (50, 10);
G.scale (2,0.5);
G.fillrect (20, 20, 50,50);
G.fillstyle= "Yellow";
G.translate (50, 10);
G.scale (2,2);
G.fillrect (20, 20, 50,50);
}
function Bianhua () {
var cas = document.getElementById ("Mycas");
var g = Cas.getcontext ("2d");
G.fillrect (20, 20, 50,50);
G.fillstyle= "Blue";
G.translate (100,-10);
G.fillrect (20, 20, 50,50);
}
function Xiantiao () {
var cas = document.getElementById ("Mycas");
var g = Cas.getcontext ("2d");
G.moveto (10,10);
G.lineto (200, 300);
g.linewidth=30;
G.stroke ();
}
function Jianbian4 () {
var cas = document.getElementById ("Mycas");
var g = Cas.getcontext ("2d");
var CG = G.createradialgradient (100,100, 50, 60, 80, 100);
Cg.addcolorstop (0, "blue");
Cg.addcolorstop (1, "yellow");
G.FILLSTYLE=CG;
G.arc (0, math.pi*2);
G.fill ();
}
function Jianbian3 () {
var cas = document.getElementById ("Mycas");
var g = Cas.getcontext ("2d");
var CG = G.createradialgradient (100,100, 50, 100,100, 100);
Cg.addcolorstop (0, "blue");
Cg.addcolorstop (1, "yellow");
G.FILLSTYLE=CG;
G.arc (0, math.pi*2);
G.stroke ();
G.fill ();
G.fillrect (0, 0, 300, 300);
}
function Jianbian2 () {
var cas = document.getElementById ("Mycas");
var g = Cas.getcontext ("2d");
var CG = g.createlineargradient (50,50, 250,250);
Cg.addcolorstop (0, "blue");
Cg.addcolorstop (1, "yellow");
G.FILLSTYLE=CG;
G.fillrect (30, 30, 300, 300);
}
function Jianbian1 () {
var cas = document.getElementById ("Mycas");
var g = Cas.getcontext ("2d");
var CG = g.createlineargradient (50,50, 300,50);
Cg.addcolorstop (0, "blue");
Cg.addcolorstop (0.6, ' gray ');
Cg.addcolorstop (1, "yellow");
G.FILLSTYLE=CG;
G.fillrect (0, 50, 400, 200);
}
function Lujing1 () {
var cas = document.getElementById ("Mycas");
var g = Cas.getcontext ("2d");
G.beginpath ();
G.arc (100,100, MATH.PI*4/3, MATH.PI*2/3, false);
G.lineto (100, 100);
G.closepath ();
G.stroke ();
G.fill ();
G.beginpath ();
G.fillstyle= ' Blue ';
G.arc (95,100, MATH.PI*4/3, MATH.PI*2/3, true);
G.lineto (95, 100);
G.closepath ();
G.stroke ();
G.fill ();
}
</script>
</body>

Draw the line weight and draw the coordinates of the change

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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