我需要一点帮助。将ID添加到画布内的每个渲染元素
如何在画布内的每个渲染元素内添加文本?
这里提琴代表了我的想法:
var canvas = document.getElementById("myCanvas");
var ctx = canvas.getContext("2d");
var x_width = canvas.width;
var y_height = canvas.height;
var dx = 2;
var dy = -2;
var ballRadius = 10;
var data = [
\t
\t [1,0.506,0.648],
[2,0.253,0.433],
[5,0.339,0.445],
[7,0.396,0.569],
[8,0.271,0.583],
[9,0.307,0.187],
[10,0.431,0.213],
[12,0.71,1.045],
[13,0.2,0.259],
[14,0.272,0.259],
[15,0.477,0.379]
];
for (var i = 0; i<=data.length-1; i++) {
var x = x_width*data[i][1];
var y = y_height*data[i][2];
var id = data[i][0];
drawPlayer (id, x,y);
}
function drawPlayer(id, x, y) {
ctx.beginPath();
ctx.arc(x, y, ballRadius, 0, Math.PI*2);
ctx.fillStyle = "#0095DD";
ctx.fill();
ctx.fillText(id, 0, 0);
ctx.closePath();
}
drawPlayer();
//setInterval(draw , 100);
#myCanvas {
border: 1px solid red;
}
<canvas id="myCanvas" width="480" height="320"></canvas>
<div class="play-btn-hld">
<button class="play">Graj</button>
</div>
我可以以某种方式添加的每个元素内的文字?理想的文本应该是data [i] [0]数字。可能吗 ?我无法把头围住它。
或者我应该使用经典的HTML和CSS来创建类似的效果?
干杯
请解决您的片段,摆脱错误的。你想让每个球都有写在其上的数字? – Oen44
我想解决这个问题,并且是每个球都写上数字。 –
@ Oen44错误已修复,我的错误 –