尝试执行此svg平移和缩放两个矩形，我似乎无法让它工作。真的很新，但我能够想出这个，但它似乎并没有起作用。我已经添加了我的javascript代码，如果有人看起来有什么问题，我使用组件ID来尝试根据我的js进行平移和缩放，但它仍然无法正常工作
<!DOCTYPE html>
<head>
</head>
<body>
<svg width="24cm" height="16cm" viewBox="-4 -1 26 20"
xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g id="myfield" transform="scale(1,1) translate(0,0)" >
<g transform=" scale(1,-1) translate(0,-16)"><g id="togglefield">
<rect id= "rectangle1" class= "rectangles" x= 2 y= 0 width= 4 height= 6 onClick="fieldDetails(event)"></rect>
<rect id="rectangle2" class= "rectangles" x= 2 y= 6 width= 4
height= 5 onClick="fieldDetails(event)"></rect>
</g>
<g id="togglefind">
<circle class="circles" id="find1" cx= 4 cy= 1 r="0.2" onClick="findDetails(event)"></circle>
<text class="text" x= 4 y= 1 transform="translate(0 2 ) scale(-1,1) rotate(180)"> 1 </text>
<circle class="circles" id="find5" cx= 4 cy= 7 r="0.2" onClick="findDetails(event)"></circle>
<text class="text" x= 4 y= 7 transform="translate(0 14 ) scale(-1,1) rotate(180)"> 5 </text>
</g>
</g>
<rect x="12.6" y="12.4" width="3" height="3" fill="white" stroke="grey" stroke-width="0.05"/>
<text x="13" y="13.2" font-family="Arial" font-size="0.6">Legend</text>
<g id="Fieldlgd">
<rect x="12.8" y="13.6" width="0.6" height="0.6" fill="none" stroke="green" stroke-width="0.04"/>
<text x="13.6" y="14" font-family="Georgia" font-size="0.5">Field ID</text>
<text x="13" y="14" font-family="Georgia" font-size="0.5">1</text>
</g><g id="Findlgd">
<circle cx="13.1" cy="14.7" r="0.12" fill="blue" stroke="red" stroke-width="0.05"/>
<text x="13.6" y="14.85" font-family="Georgia" font-size="0.5">Find ID</text>
<text x="13.2" y="14.7" font-family="Arial" font-size="0.45">1</text>
</g>
</g>
<rect x="-4" y="0.3" width="3.2" height="12" fill="white" stroke="black" stroke-width="0" fill-opacity="0.8"/>
<text x="-4" y="0.8" font-family="San Serif" font-size="3%">Pan and Zoom </text>
<text x="-2.7" y="1.8" font-family="Georgia" font-size="4%">N</text>
<polyline id="panup" onclick="panup_click(evt)" points="-3,2 -2.5,1 -2,2 -2.3,1.9 -2.7,1.9 -3,2" fill="lavender" stroke="cornflowerblue" stroke-width="0.05" fill-opacity="0.6"/>
<text x="-2.7" y="3.4" font-family="Georgia" font-size="4%">S</text>
<polyline id="pandown" onclick="pandown_click(evt)" points="-3,2.8 -2.5,3.8 -2,2.8 -2.3,2.9 -2.7,2.9 -3,2.8" fill="lavender" stroke="cornflowerblue" stroke-width="0.05" fill-opacity="0.6"/>
<text x="-3.3" y="2.6" font-family="Georgia" font-size="4%">W</text>
<polyline id="panleft" onclick="panleft_click(evt)" points="-2.7,1.9 -3.7,2.4 -2.7,2.9 -2.8,2.6 -2.8,2.2 -2.7,1.9" fill="lavender" stroke="cornflowerblue" stroke-width="0.05" fill-opacity="0.6"/>
<text x="-2.1" y="2.6" font-family="Georgia" font-size="4%">E</text>
<polyline id="panright" onclick="panright_click(evt)" points="-2.3,1.9 -1.3,2.4 -2.3,2.9 -2.2,2.6 -2.2,2.2 -2.3,1.9" fill="lavender" stroke="cornflowerblue" stroke-width="0.05" fill-opacity="0.6"/>
<text x="-2.7" y="2.6" font-family="Georgia" font-size="4%">C</text>
<circle id="recenter" onclick="recenter_click(evt)" cx="-2.5" cy="2.4" r="0.3" fill="lavender" stroke="cornflowerblue" stroke-width="0.05" fill-opacity="0.6"/>
<polyline id="zoomcross" points="-2.6,4.2 -2.4,4.2 -2.4,4.6 -2.1,4.6 -2.1,4.8 -2.4,4.8 -2.4,5.3 -2.6,5.3 -2.6,4.8 -2.9,4.8 -2.9,4.6 -2.6,4.6 -2.6,4.2" fill="cornflowerblue"/>
<rect id="zoomIn" onclick="zoomin_click(evt)" x="-3" y="4" width="1" height="1.5" fill="white" stroke="black" stroke-width="0.05" opacity="0.2"/>
<rect id="zoomdash" x="-2.9" y="5.9" width="0.8" height="0.2"
fill="cornflowerblue"/>
<rect id="zoomOut" onclick="zoomout_click(evt)" x="-3" y="5.7" width="1" height="0.6" fill="white" stroke="black" stroke-width="0.05" opacity="0.2"/>
</svg>
// Pan left function
function panleft_click(evt) {
var root = document.documentElement;
// variable to get the group transform object
var myfield = null;
myfield = document.getElementById("myfield");
// Incase the group has no Id then get the first '<g>' element
if(myfield === null)
myfield = document.getElementsByTagName('g')[0];
var goIn = evt.target; // thus line is currently not used
// Fetch the current transform state of the group element into a
var matrix = myfield.getCTM();
// Read the translate attributes from the matrix into variable x and y
// Below is the desired leftward change
var x = (matrix.e + 2) / matrix.a ; // Divide change by current scale to remove exponential movement
var y = matrix.f / matrix.a ; // To keep motion only along one axis
// Set the new transform attribute for the group
myfield.setAttributeNS(null,"transform", "scale(" + matrix.a + "," + matrix.d + ") translate(" + x + "," + y + ")");
}
// Pan right function
function panright_click(evt) {
// variable to get the group transform object
var myfield = null;
myfield = document.getElementById("myfield");
// Incase the group has no Id then get the first '<g>' element
if(myfield === null)
myfield = document.getElementsByTagName('g')[0];
var goIn = evt.target; // thus line is currently not used
// Fetch the current transform state of the group element into a matrix
var matrix = myfield.getCTM();
// Read the translate attributes from the matrix into variable x and y
// Below is the desired rightward change
var x = (matrix.e - 2) / matrix.a; // Divide change by current scale to remove exponential movement
var y = matrix.f / matrix.a; // To keep motion only along one axis
// Set the new transform attribute for the group
myfield.setAttributeNS(null,"transform", "scale(" + matrix.a + "," + matrix.d + ") translate(" + x + "," + y + ")");
}
// Pan up function
function panup_click(evt) {
// variable to get the group transform object
var myfield = null;
myfield = document.getElementById("myfield");
// Incase the group has no Id then get the first '<g>' element
if(myfield === null)
myfield = document.getElementsByTagName('g')[0];
var goIn = evt.target; // thus line is currently not used
// Fetch the current transform state of the group element into a matrix
var matrix = myfield.getCTM();
// Read the translate attributes from the matrix into variable x and y
var x = matrix.e / matrix.a ; // Divided by scale to keep motion only along one axis
// Below is the desired upward change
var y = (matrix.f + 2) / matrix.a; // Divide change by current scale to remove exponential movement
// Set the new transform attribute for the group
myfield.setAttributeNS(null,"transform", "scale(" + matrix.a + "," + matrix.d + ") translate(" + x + "," + y + ")");
}
// Pan down function
function pandown_click(evt) {
// variable to get the group transform object
var myfield = null;
myfield = document.getElementById("myfield");
// Incase the group has no Id then get the first '<g>' element
if(myfield === null)
myfield = document.getElementsByTagName('g')[0];
var goIn = evt.target; // thus line is currently not used
// Fetch the current transform state of the group element into a matrix
var matrix = myfield.getCTM();
// Read the translate attributes from the matrix into variable x and y
var x = matrix.e / matrix.a; // Divided by scale to keep motion only along one axis
// Below is the desired downward change
var y = (matrix.f - 2) / matrix.a; // Divide change by current scale to remove exponential movement
// Set the new transform attribute for the group
myfield.setAttributeNS(null,"transform", "scale(" + matrix.a + "," + matrix.d + ") translate(" + x + "," + y + ")");
}
// Zoom in (enlarge) function
function zoomin_click(evt) {
// variable to get the group transform object
var myfield = null;
myfield = document.getElementById("myfield");
// Incase the group has no Id then get the first '<g>' element
if(myfield === null)
myfield = document.getElementsByTagName('g')[0];
var goIn = evt.target; // thus line is currently not used
// Fetch the current transform state of the group element into a matrix
var matrix = myfield.getCTM();
// Read the scale attributes from the matrix into variable x and y
// then apply an increment by multiplying
var x = matrix.a * 1.2;
var y = matrix.d * 1.2;
// Set the new transform attribute for the group
myfield.setAttributeNS(null,"transform", "scale(" + x + "," + y + ") translate(" + matrix.e + "," + matrix.f + ")");
}
// Zoom out (reduce) function
function zoomout_click(evt) {
// variable to get the group transform object
var myfield = null;
myfield = document.getElementById("myfield");
// Incase the group has no Id then get the first '<g>' element
if(myfield === null)
myfield = document.getElementsByTagName('g')[0];
var goIn = evt.target; // thus line is currently not used
// Fetch the current transform state of the group element into a matrix
var matrix = myfield.getCTM();
// Read the scale attributes from the matrix into variable x and y
// then apply a reduction in scale by dividing
var x = matrix.a / 1.2;
var y = matrix.d / 1.2;
// Set the new transform attribute for the group
myfield.setAttributeNS(null,"transform", "scale(" + x + "," + y + ") translate(" + matrix.e + "," + matrix.f + ")");
}
// Recenter/reset function
function recenter_click(evt) {
// Reset the group to the original transform
document.getElementById("myfield").setAttributeNS(null,"transform", "scale(1,1) translate(0,0)");
}
答案 0 :(得分：1)
getCTM是用于此目的的错误函数。它包括由于viewBox等而应用于父SVG的任何变换。您只是想要操纵＆＃34; myfield＆＃34;的transform属性。基。
我建议只使用预定义的DOM函数操作tranform属性。
使用以下方法访问transform属性DOM：
<myfield DOM object>.transform.baseVal
返回一个SVGTransformList对象，它基本上是一个包含两个SVGTramnsform对象的数组。一个用于scale()部分，一个用于transform()部分。拥有这些对象后，您可以为它们提供新值，SVG将更新。
function panup_click(evt) {
pan(0,-2);
}
function pandown_click(evt) {
pan(0,2);
}
function panleft_click(evt) {
pan(-2,0);
}
function panright_click(evt) {
pan(2,0);
}
// Pan function
function pan(dx, dy) {
// variable to get the group transform object
var myfield = document.getElementById("myfield");
// Fetch the current value of the transform attribute
var transformList = myfield.transform.baseVal;
var translate = transformList.getItem(1);
// Adjust the translate transform item
var tx = translate.matrix.e;
var ty = translate.matrix.f;
translate.setTranslate(tx + dx, ty + dy);
}
// Zoom in (enlarge) function
function zoomin_click(evt) {
zoom(1.2);
}
// Zoom out (reduce) function
function zoomout_click(evt) {
zoom(1 / 1.2);
}
function zoom(scaleFactor)
{
// variable to get the group transform object
var myfield = document.getElementById("myfield");
// Fetch the current value of the transform attribute
var transformList = myfield.transform.baseVal;
var scale = transformList.getItem(0);
// Adjust the translate transform item
var s = scale.matrix.a;
scale.setScale(s * scaleFactor, s * scaleFactor);
}
// Recenter/reset function
function recenter_click(evt) {
// Reset the group to the original transform
document.getElementById("myfield").setAttributeNS(null,"transform", "scale(1,1) translate(0,0)");
}<svg width="24cm" height="16cm" viewBox="-4 -1 26 20"
xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g id="myfield" transform="scale(1,1) translate(0,0)" >
<g transform=" scale(1,-1) translate(0,-16)">
<g id="togglefield">
<rect id= "rectangle1" class= "rectangles" x= 2 y= 0 width= 4 height= 6 onClick="fieldDetails(event)"></rect>
<rect id="rectangle2" class= "rectangles" x= 2 y= 6 width= 4 height= 5 onClick="fieldDetails(event)"></rect>
</g>
<g id="togglefind">
<circle class="circles" id="find1" cx= 4 cy= 1 r="0.2" onClick="findDetails(event)"></circle>
<text class="text" x= 4 y= 1 transform="translate(0 2 ) scale(-1,1) rotate(180)"> 1 </text>
<circle class="circles" id="find5" cx= 4 cy= 7 r="0.2" onClick="findDetails(event)"></circle>
<text class="text" x= 4 y= 7 transform="translate(0 14 ) scale(-1,1) rotate(180)"> 5 </text>
</g>
</g>
<rect x="12.6" y="12.4" width="3" height="3" fill="white" stroke="grey" stroke-width="0.05"/>
<text x="13" y="13.2" font-family="Arial" font-size="0.6">Legend</text>
<g id="Fieldlgd">
<rect x="12.8" y="13.6" width="0.6" height="0.6" fill="none" stroke="green" stroke-width="0.04"/>
<text x="13.6" y="14" font-family="Georgia" font-size="0.5">Field ID</text>
<text x="13" y="14" font-family="Georgia" font-size="0.5">1</text>
</g>
<g id="Findlgd">
<circle cx="13.1" cy="14.7" r="0.12" fill="blue" stroke="red" stroke-width="0.05"/>
<text x="13.6" y="14.85" font-family="Georgia" font-size="0.5">Find ID</text>
<text x="13.2" y="14.7" font-family="Arial" font-size="0.45">1</text>
</g>
</g>
<rect x="-4" y="0.3" width="3.2" height="12" fill="white" stroke="black" stroke-width="0" fill-opacity="0.8"/>
<text x="-4" y="0.8" font-family="San Serif" font-size="3%">Pan and Zoom </text>
<text x="-2.7" y="1.8" font-family="Georgia" font-size="4%">N</text>
<polyline id="panup" onclick="panup_click(evt)" points="-3,2 -2.5,1 -2,2 -2.3,1.9 -2.7,1.9 -3,2" fill="lavender" stroke="cornflowerblue" stroke-width="0.05" fill-opacity="0.6"/>
<text x="-2.7" y="3.4" font-family="Georgia" font-size="4%">S</text>
<polyline id="pandown" onclick="pandown_click(evt)" points="-3,2.8 -2.5,3.8 -2,2.8 -2.3,2.9 -2.7,2.9 -3,2.8" fill="lavender" stroke="cornflowerblue" stroke-width="0.05" fill-opacity="0.6"/>
<text x="-3.3" y="2.6" font-family="Georgia" font-size="4%">W</text>
<polyline id="panleft" onclick="panleft_click(evt)" points="-2.7,1.9 -3.7,2.4 -2.7,2.9 -2.8,2.6 -2.8,2.2 -2.7,1.9" fill="lavender" stroke="cornflowerblue" stroke-width="0.05" fill-opacity="0.6"/>
<text x="-2.1" y="2.6" font-family="Georgia" font-size="4%">E</text>
<polyline id="panright" onclick="panright_click(evt)" points="-2.3,1.9 -1.3,2.4 -2.3,2.9 -2.2,2.6 -2.2,2.2 -2.3,1.9" fill="lavender" stroke="cornflowerblue" stroke-width="0.05" fill-opacity="0.6"/>
<text x="-2.7" y="2.6" font-family="Georgia" font-size="4%">C</text>
<circle id="recenter" onclick="recenter_click(evt)" cx="-2.5" cy="2.4" r="0.3" fill="lavender" stroke="cornflowerblue" stroke-width="0.05" fill-opacity="0.6"/>
<polyline id="zoomcross" points="-2.6,4.2 -2.4,4.2 -2.4,4.6 -2.1,4.6 -2.1,4.8 -2.4,4.8 -2.4,5.3 -2.6,5.3 -2.6,4.8 -2.9,4.8 -2.9,4.6 -2.6,4.6 -2.6,4.2" fill="cornflowerblue"/>
<rect id="zoomIn" onclick="zoomin_click(evt)" x="-3" y="4" width="1" height="1.5" fill="white" stroke="black" stroke-width="0.05" opacity="0.2"/>
<rect id="zoomdash" x="-2.9" y="5.9" width="0.8" height="0.2" fill="cornflowerblue"/>
<rect id="zoomOut" onclick="zoomout_click(evt)" x="-3" y="5.7" width="1" height="0.6" fill="white" stroke="black" stroke-width="0.05" opacity="0.2"/>
</svg>