Javascript 其他移动到(x,y)画布函数
我正在搜索画布函数,它可以将我的形状设置为x,y位置。 例如,我有一个数组,其中包含所有要绘制的形状,我只是“告诉”对象“动画到x,y坐标”,如下所示:Javascript 其他移动到(x,y)画布函数,javascript,html,canvas,Javascript,Html,Canvas,我正在搜索画布函数,它可以将我的形状设置为x,y位置。 例如,我有一个数组,其中包含所有要绘制的形状,我只是“告诉”对象“动画到x,y坐标”,如下所示: // Array that holds all the shapes to draw var shapes = new Array(); // Setting up some shapes for (var i = 0; i < 10; i++) { var x = Math.random()*250; var y =
// Array that holds all the shapes to draw
var shapes = new Array();
// Setting up some shapes
for (var i = 0; i < 10; i++) {
var x = Math.random()*250;
var y = Math.random()*250;
var width = height = Math.random()*30;
shapes.push(new Shape(x, y, width, height));
};
function animate() {
// Clear
context.clearRect(0, 0, canvasWidth, canvasHeight);
// Loop through every object
var shapesLength = shapes.length;
for (var i = 0; i < shapesLength; i++) {
var tmpShape = shapes[i];
//here should go function that would animate my shape to x,y postition
var x = tmpShape.x????;
var y = tmpShape.y????;
// Draw
context.fillRect(x, y, tmpShape.width, tmpShape.height);
};
setTimeout(animate, 33);
};
// pct goes from 0.00 to 1.00 as you go from the starting to ending points
var dx=endingX-startingX;
var dy=endingY-startingY;
var nextX=startingX+dx*pct;
var nextY=startingY+dy*pct;
//保存要绘制的所有形状的数组
var shapes=新数组();
//设置一些形状
对于(变量i=0;i<10;i++){
var x=Math.random()*250;
var y=Math.random()*250;
var width=height=Math.random()*30;
推(新形状(x、y、宽度、高度));
};
函数animate(){
//清楚的
clearRect(0,0,画布宽度,画布高度);
//循环遍历每个对象
var shapesLength=shapes.length;
对于(var i=0;i
我什么都没试过,因为我根本不知道怎么做。如果你沿着一条直线从起点移动到终点,你可以按该行程的指定百分比计算XY,如下所示:
// Array that holds all the shapes to draw
var shapes = new Array();
// Setting up some shapes
for (var i = 0; i < 10; i++) {
var x = Math.random()*250;
var y = Math.random()*250;
var width = height = Math.random()*30;
shapes.push(new Shape(x, y, width, height));
};
function animate() {
// Clear
context.clearRect(0, 0, canvasWidth, canvasHeight);
// Loop through every object
var shapesLength = shapes.length;
for (var i = 0; i < shapesLength; i++) {
var tmpShape = shapes[i];
//here should go function that would animate my shape to x,y postition
var x = tmpShape.x????;
var y = tmpShape.y????;
// Draw
context.fillRect(x, y, tmpShape.width, tmpShape.height);
};
setTimeout(animate, 33);
};
// pct goes from 0.00 to 1.00 as you go from the starting to ending points
var dx=endingX-startingX;
var dy=endingY-startingY;
var nextX=startingX+dx*pct;
var nextY=startingY+dy*pct;
“询问代码的问题必须表明对正在解决的问题的最低理解。包括尝试的解决方案、为什么它们不起作用以及预期的结果。”欢迎使用Stackoverflow,感谢您添加代码。我们通过在这里消费代码而茁壮成长!指定百分比是什么意思?因此,如果pct=0.00,则您处于线段的起点。如果pct=0.33,则自始至终为1/3。如果pct=1.00,你就在线段的终点,明白了。顺便说一句,我正在搜索类似于和的东西,但对于直线是的,这个公式将在任何起点[startingX,startingY]和任何终点[endingX,endingY]之间导航一条直线,然后通过清除画布和context.fillRect(newX,newY,shape.width,shape.height)来“移动”形状对于您的最后一个问题:否。您希望在动画循环中将pct从0.00增加到1.00,以沿直线自始至终计算XY。