Question

嘿我正在尝试使用库在EaselJS中使用画布构建以下图片。

我的图片组件是：

两个圆圈 - 黄色和红色以及浅绿色背景
从0到1的坐标系，其中包含所有必要的标签。

我已经成功实现了我的两个目标。我已经基于stackoverflow讨论构建了一个Coordinate System： How to draw a full coordinate system with Easeljs?

我遗留了两个主要问题，这些问题让我很感兴趣：

我需要画一个适合坐标系的矩形（或方形），当前的矩形只是一个背景。
此外，我需要添加3个标签：x轴上的'Critical Index'，y轴上的'Long-Severity Index'和长期标题。

如果有人可以帮我解决这个问题，我会很高兴我正在添加源代码：

$(function(){
var stage = new createjs.Stage('canvas2d');
var circle1 = new createjs.Shape();
var circle2 = new createjs.Shape();
var rect = new createjs.Rectangle(0, 0, 100, 100);
circle2.graphics.beginFill("yellow").drawCircle(0, 0, 300);
circle2.x = 500;
circle2.y = 0;
stage.addChild(circle2);
circle1.graphics.beginFill("red").drawCircle(0, 0, 150);
circle1.x = 500;
circle1.y = 0;
stage.addChild(circle1);
//stage.addChild(rect);
stage.update();
var coord_xaxis = new createjs.Shape();
stage.addChild(coord_xaxis);
var coord_yaxis = new createjs.Shape();
stage.addChild(coord_yaxis);
var coord_arrow_x = new createjs.Shape();
//stage.addChild(coord_arrow_x);
var coord_arrow_y = new createjs.Shape();
//stage.addChild(coord_arrow_y);
var coord_xaxis_lines = new createjs.Shape();
stage.addChild(coord_xaxis_lines);
var coord_yaxis_lines = new createjs.Shape();
stage.addChild(coord_yaxis_lines);
/**$('#canvas2d').width()/15**/
var axis_center_x = $('#canvas2d').width()/15;
var axis_center_y = $('#canvas2d').height()/1.10;
var xaxis_width = $('#canvas2d').width()-0.05*$('#canvas2d').width();
var yaxis_width = $('#canvas2d').height()-0.05*$('#canvas2d').height();
var axis_start_x = ($('#canvas2d').width()-xaxis_width)/2;
var axis_start_y = ($('#canvas2d').height()-yaxis_width)/6;

var axis_strokewidth = 2;
coord_xaxis.graphics.setStrokeStyle(axis_strokewidth,'round').beginStroke('#000');
coord_xaxis.graphics.moveTo(axis_start_x, axis_center_y).lineTo(axis_start_x+xaxis_width, axis_center_y);
coord_yaxis.graphics.setStrokeStyle(axis_strokewidth,'round').beginStroke('#000');
coord_yaxis.graphics.moveTo(axis_center_x, axis_start_y).lineTo(axis_center_x, axis_start_y+yaxis_width);

// draw coordsys arrow for x-axis
var arrwidth = 5;
var arrxtnd = 5;
coord_arrow_x.graphics.beginFill('#000');
coord_arrow_x.graphics.setStrokeStyle(axis_strokewidth,'round').beginStroke('#000');
coord_arrow_x.graphics.moveTo(axis_center_x, axis_start_y-arrwidth/2).lineTo(axis_center_x+arrwidth, axis_start_y+arrwidth+arrxtnd).lineTo(axis_center_x-arrwidth, axis_start_y+arrwidth+arrxtnd).lineTo(axis_center_x, axis_start_y-arrwidth/2);
coord_arrow_x.graphics.endFill();

// draw coordsys arrow for y-axis
coord_arrow_y.graphics.beginFill('#000');
coord_arrow_y.graphics.beginStroke('#000');
coord_arrow_y.graphics.moveTo(axis_start_x+xaxis_width+arrwidth/2, axis_center_y).lineTo(axis_start_x+xaxis_width-arrwidth-arrxtnd, axis_center_y+arrwidth).lineTo(axis_start_x+xaxis_width-arrwidth-arrxtnd, axis_center_y-arrwidth).lineTo(axis_start_x+xaxis_width+arrwidth/2, axis_center_y);
coord_arrow_y.graphics.endFill();

var stepdist = xaxis_width/5.25;
var steplinew = 6;
// 10 horizontal lines
var xlines = 10;
var labels_x = [];
for(var i=xlines;i>=0;i--) {
 // little black marker
  coord_yaxis_lines.graphics.setStrokeStyle(1,'round').beginStroke('#000');
        coord_yaxis_lines.graphics.moveTo(axis_center_x-steplinew, axis_center_y+(-i/2)*stepdist).lineTo(axis_center_x+steplinew, axis_center_y+(-i/2)*stepdist);
        // labels
        labels_x[i] = new createjs.Text('x', '14px Arial', '#333');
        labels_x[i].x = axis_center_x-12;
        labels_x[i].y = axis_center_y+(-i/2)*stepdist-6; // move up a bit
        stage.addChild(labels_x[i]);
        labels_x[i].text = (i/10);
        labels_x[i].textAlign = 'right';
}
// 12 orthogonal lines
 var stepdist2 = xaxis_width/6.5; 
  var steplinew2 = 6;
var ylines = 10;
var labels_y = [];
for(var i=ylines;i>=1;i--) {
    // dont overdraw y-axis-line
        
        // little black marker
        coord_xaxis_lines.graphics.setStrokeStyle(1,'round').beginStroke('#000');
        coord_xaxis_lines.graphics.moveTo(axis_center_x+(i/1.6)*stepdist2, axis_center_y-steplinew2).lineTo(axis_center_x+(i/1.6)*stepdist2, axis_center_y+steplinew2);           
        // labels
        labels_y[i] = new createjs.Text('x', '14px Arial', '#333');
        labels_y[i].x = axis_center_x+(i/1.6)*stepdist2; // move up a bit
        labels_y[i].y = axis_center_y+12;
        stage.addChild(labels_y[i]);
        labels_y[i].text = (i/10);
        labels_y[i].textAlign = 'center';
}

stage.update(); 
  })

#canvas2d{
  background-color: #32CD32;
}

<script src="https://code.createjs.com/createjs-2015.11.26.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<canvas id="canvas2d" width="500" height="500"></canvas>

Answer 1

在EaselJS中创建矩形的语法与创建圆形的语法相同。不同之处在于在drawRect链中调用drawCircle而不是graphics。

我添加了一个具有任意位置和大小值的矩形，以匹配您的整体代码样式，因为我无法快速找到任何条件。我还删除了CSS上的背景颜色。

至于在每个轴上添加标签，我强烈建议您使用DOM代替。 EaselJS对文本的支持几乎无法使用。即使EaselJS本身也建议您使用DOMElement而不是Text DisplayObj。有关DOMElement here的更多信息。

就我个人而言，我认为通过使用纯DOM而不是画布工作来获得理想的结果要容易得多，除非你正在做一些基于用户交互的重型动画。

$(function(){
var stage = new createjs.Stage('canvas2d');
var circle1 = new createjs.Shape();
var circle2 = new createjs.Shape();
var rect = new createjs.Shape();
rect.graphics.f("green").drawRect(33, 0, 500, 455);
stage.addChild(rect);
circle2.graphics.beginFill("yellow").drawCircle(0, 0, 300);
circle2.x = 500;
circle2.y = 0;
stage.addChild(circle2);
circle1.graphics.beginFill("red").drawCircle(0, 0, 150);
circle1.x = 500;
circle1.y = 0;
stage.addChild(circle1);
stage.update();
var coord_xaxis = new createjs.Shape();
stage.addChild(coord_xaxis);
var coord_yaxis = new createjs.Shape();
stage.addChild(coord_yaxis);
var coord_arrow_x = new createjs.Shape();
//stage.addChild(coord_arrow_x);
var coord_arrow_y = new createjs.Shape();
//stage.addChild(coord_arrow_y);
var coord_xaxis_lines = new createjs.Shape();
stage.addChild(coord_xaxis_lines);
var coord_yaxis_lines = new createjs.Shape();
stage.addChild(coord_yaxis_lines);
/**$('#canvas2d').width()/15**/
var axis_center_x = $('#canvas2d').width()/15;
var axis_center_y = $('#canvas2d').height()/1.10;
var xaxis_width = $('#canvas2d').width()-0.05*$('#canvas2d').width();
var yaxis_width = $('#canvas2d').height()-0.05*$('#canvas2d').height();
var axis_start_x = ($('#canvas2d').width()-xaxis_width)/2;
var axis_start_y = ($('#canvas2d').height()-yaxis_width)/6;

var axis_strokewidth = 2;
coord_xaxis.graphics.setStrokeStyle(axis_strokewidth,'round').beginStroke('#000');
coord_xaxis.graphics.moveTo(axis_start_x, axis_center_y).lineTo(axis_start_x+xaxis_width, axis_center_y);
coord_yaxis.graphics.setStrokeStyle(axis_strokewidth,'round').beginStroke('#000');
coord_yaxis.graphics.moveTo(axis_center_x, axis_start_y).lineTo(axis_center_x, axis_start_y+yaxis_width);

// draw coordsys arrow for x-axis
var arrwidth = 5;
var arrxtnd = 5;
coord_arrow_x.graphics.beginFill('#000');
coord_arrow_x.graphics.setStrokeStyle(axis_strokewidth,'round').beginStroke('#000');
coord_arrow_x.graphics.moveTo(axis_center_x, axis_start_y-arrwidth/2).lineTo(axis_center_x+arrwidth, axis_start_y+arrwidth+arrxtnd).lineTo(axis_center_x-arrwidth, axis_start_y+arrwidth+arrxtnd).lineTo(axis_center_x, axis_start_y-arrwidth/2);
coord_arrow_x.graphics.endFill();

// draw coordsys arrow for y-axis
coord_arrow_y.graphics.beginFill('#000');
coord_arrow_y.graphics.beginStroke('#000');
coord_arrow_y.graphics.moveTo(axis_start_x+xaxis_width+arrwidth/2, axis_center_y).lineTo(axis_start_x+xaxis_width-arrwidth-arrxtnd, axis_center_y+arrwidth).lineTo(axis_start_x+xaxis_width-arrwidth-arrxtnd, axis_center_y-arrwidth).lineTo(axis_start_x+xaxis_width+arrwidth/2, axis_center_y);
coord_arrow_y.graphics.endFill();

var stepdist = xaxis_width/5.25;
var steplinew = 6;
// 10 horizontal lines
var xlines = 10;
var labels_x = [];
for(var i=xlines;i>=0;i--) {
 // little black marker
  coord_yaxis_lines.graphics.setStrokeStyle(1,'round').beginStroke('#000');
        coord_yaxis_lines.graphics.moveTo(axis_center_x-steplinew, axis_center_y+(-i/2)*stepdist).lineTo(axis_center_x+steplinew, axis_center_y+(-i/2)*stepdist);
        // labels
        labels_x[i] = new createjs.Text('x', '14px Arial', '#333');
        labels_x[i].x = axis_center_x-12;
        labels_x[i].y = axis_center_y+(-i/2)*stepdist-6; // move up a bit
        stage.addChild(labels_x[i]);
        labels_x[i].text = (i/10);
        labels_x[i].textAlign = 'right';
}
// 12 orthogonal lines
 var stepdist2 = xaxis_width/6.5; 
  var steplinew2 = 6;
var ylines = 10;
var labels_y = [];
for(var i=ylines;i>=1;i--) {
    // dont overdraw y-axis-line
        
        // little black marker
        coord_xaxis_lines.graphics.setStrokeStyle(1,'round').beginStroke('#000');
        coord_xaxis_lines.graphics.moveTo(axis_center_x+(i/1.6)*stepdist2, axis_center_y-steplinew2).lineTo(axis_center_x+(i/1.6)*stepdist2, axis_center_y+steplinew2);           
        // labels
        labels_y[i] = new createjs.Text('x', '14px Arial', '#333');
        labels_y[i].x = axis_center_x+(i/1.6)*stepdist2; // move up a bit
        labels_y[i].y = axis_center_y+12;
        stage.addChild(labels_y[i]);
        labels_y[i].text = (i/10);
        labels_y[i].textAlign = 'center';
}

stage.update(); 
  })

<script src="https://code.createjs.com/createjs-2015.11.26.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<canvas id="canvas2d" width="500" height="500"></canvas>

在标签System Easeljs上定位标签

1 个答案: