/*
Copyright 2008-2026
Matthias Ehmann,
Michael Gerhaeuser,
Carsten Miller,
Bianca Valentin,
Alfred Wassermann,
Peter Wilfahrt
This file is part of JSXGraph.
JSXGraph is free software dual licensed under the GNU LGPL or MIT License.
You can redistribute it and/or modify it under the terms of the
* GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version
OR
* MIT License: https://github.com/jsxgraph/jsxgraph/blob/master/LICENSE.MIT
JSXGraph is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License and
the MIT License along with JSXGraph. If not, see <https://www.gnu.org/licenses/>
and <https://opensource.org/licenses/MIT/>.
*/
/*global JXG: true, define: true, AMprocessNode: true, MathJax: true, document: true */
/*jslint nomen: true, plusplus: true, newcap:true*/
import JXG from "../jxg.js";
import AbstractRenderer from "./abstract.js";
import Const from "../base/constants.js";
import Type from "../utils/type.js";
import Color from "../utils/color.js";
import Mat from "../math/math.js";
import Numerics from "../math/numerics.js";
/**
* @class Uses VML to implement the rendering methods defined in {@link JXG.AbstractRenderer}.
* VML was used in very old Internet Explorer versions upto IE 8.
*
* @augments JXG.AbstractRenderer
* @param {Node} container Reference to a DOM node containing the board.
* @see JXG.CanvasRenderer
* @see JXG.NoRenderer
* @see JXG.SVGRenderer
* @deprecated
*/
JXG.VMLRenderer = function (container) {
this.type = 'vml';
this.container = container;
this.container.style.overflow = 'hidden';
if (this.container.style.position === "") {
this.container.style.position = 'relative';
}
this.container.onselectstart = function () {
return false;
};
this.resolution = 10; // Paths are drawn with a resolution of this.resolution/pixel.
// Add VML includes and namespace
// Original: IE <=7
//container.ownerDocument.createStyleSheet().addRule("v\\:*", "behavior: url(#default#VML);");
if (!Type.exists(JXG.vmlStylesheet)) {
container.ownerDocument.namespaces.add("jxgvml", "urn:schemas-microsoft-com:vml");
JXG.vmlStylesheet = this.container.ownerDocument.createStyleSheet();
JXG.vmlStylesheet.addRule(".jxgvml", "behavior:url(#default#VML)");
}
try {
if (!container.ownerDocument.namespaces.jxgvml) {
container.ownerDocument.namespaces.add("jxgvml", "urn:schemas-microsoft-com:vml");
}
this.createNode = function (tagName) {
return container.ownerDocument.createElement(
"<jxgvml:" + tagName + ' class="jxgvml">'
);
};
} catch (e) {
this.createNode = function (tagName) {
return container.ownerDocument.createElement(
"<" + tagName + ' xmlns="urn:schemas-microsoft.com:vml" class="jxgvml">'
);
};
}
// dash styles
this.dashArray = [
"Solid",
"1 1",
"ShortDash",
"Dash",
"LongDash",
"ShortDashDot",
"LongDashDot"
];
};
JXG.VMLRenderer.prototype = new AbstractRenderer();
JXG.extend(
JXG.VMLRenderer.prototype,
/** @lends JXG.VMLRenderer.prototype */ {
/**
* Sets attribute `key` of node `node` to `value`.
* @param {Node} node A DOM node.
* @param {String} key Name of the attribute.
* @param {String} val New value of the attribute.
* @param {Boolean} [iFlag=false] If false, the attribute's name is case insensitive.
*/
_setAttr: function (node, key, val, iFlag) {
try {
if (this.container.ownerDocument.documentMode === 8) {
node[key] = val;
} else {
node.setAttribute(key, val, iFlag);
}
} catch (e) {
JXG.debug("_setAttr:" /*node.id*/ + " " + key + " " + val + "<br>\n");
}
},
/* ******************************** *
* This renderer does not need to
* override draw/update* methods
* since it provides draw/update*Prim
* methods.
* ******************************** */
/* **************************
* Lines
* **************************/
// documented in AbstractRenderer
updateTicks: function (ticks) {
var i,
len,
c,
x,
y,
r = this.resolution,
tickArr = [];
len = ticks.ticks.length;
for (i = 0; i < len; i++) {
c = ticks.ticks[i];
x = c[0];
y = c[1];
if (Type.isNumber(x[0]) && Type.isNumber(x[1])) {
tickArr.push(
" m " +
Math.round(r * x[0]) +
", " +
Math.round(r * y[0]) +
" l " +
Math.round(r * x[1]) +
", " +
Math.round(r * y[1]) +
" "
);
}
}
if (!Type.exists(ticks.rendNode)) {
ticks.rendNode = this.createPrim("path", ticks.id);
this.appendChildPrim(ticks.rendNode, ticks.evalVisProp('layer'));
}
this._setAttr(ticks.rendNode, "stroked", 'true');
this._setAttr(
ticks.rendNode,
"strokecolor",
ticks.evalVisProp('strokecolor'),
1
);
this._setAttr(
ticks.rendNode,
"strokeweight",
ticks.evalVisProp('strokewidth')
);
this._setAttr(
ticks.rendNodeStroke,
"opacity",
ticks.evalVisProp('strokeopacity') * 100 + "%"
);
this.updatePathPrim(ticks.rendNode, tickArr, ticks.board);
},
/* **************************
* Text related stuff
* **************************/
// Already documented in JXG.AbstractRenderer
displayCopyright: function (str, fontsize) {
var node, t;
node = this.createNode('textbox');
node.style.position = 'absolute';
this._setAttr(node, "id", this.container.id + "_" + 'licenseText');
node.style.left = 20;
node.style.top = 2;
node.style.fontSize = fontsize;
node.style.color = "#356AA0";
node.style.fontFamily = "Arial,Helvetica,sans-serif";
this._setAttr(node, "opacity", "30%");
node.style.filter =
"progid:DXImageTransform.Microsoft.Matrix(M11='1.0', sizingMethod='auto expand', enabled = false) progid:DXImageTransform.Microsoft.Alpha(opacity = 30, enabled = true)";
t = this.container.ownerDocument.createTextNode(str);
node.appendChild(t);
this.appendChildPrim(node, 0);
},
// documented in AbstractRenderer
drawInternalText: function (el) {
var node;
node = this.createNode('textbox');
node.style.position = 'absolute';
el.rendNodeText = this.container.ownerDocument.createTextNode("");
node.appendChild(el.rendNodeText);
this.appendChildPrim(node, 9);
node.style.filter =
"progid:DXImageTransform.Microsoft.Matrix(M11='1.0', sizingMethod='auto expand', enabled = false) progid:DXImageTransform.Microsoft.Alpha(opacity = 100, enabled = false)";
return node;
},
// documented in AbstractRenderer
updateInternalText: function (el) {
var v,
content = el.plaintext,
m = this.joinTransforms(el, el.transformations),
offset = [0, 0],
maxX,
maxY,
minX,
minY,
i,
node = el.rendNode,
p = [],
ev_ax = el.getAnchorX(),
ev_ay = el.getAnchorY();
if (!isNaN(el.coords.scrCoords[1] + el.coords.scrCoords[2])) {
// Horizontal
if (ev_ax === 'right') {
offset[0] = 1;
} else if (ev_ax === 'middle') {
offset[0] = 0.5;
} // default (ev_ax === 'left') offset[0] = 0;
// Vertical
if (ev_ay === 'bottom') {
offset[1] = 1;
} else if (ev_ay === 'middle') {
offset[1] = 0.5;
} // default (ev_ay === 'top') offset[1] = 0;
// Compute maxX, maxY, minX, minY
p[0] = Mat.matVecMult(m, [
1,
el.coords.scrCoords[1] - offset[0] * el.size[0],
el.coords.scrCoords[2] + (1 - offset[1]) * el.size[1] + this.vOffsetText
]);
p[0][1] /= p[0][0];
p[0][2] /= p[0][0];
p[1] = Mat.matVecMult(m, [
1,
el.coords.scrCoords[1] + (1 - offset[0]) * el.size[0],
el.coords.scrCoords[2] + (1 - offset[1]) * el.size[1] + this.vOffsetText
]);
p[1][1] /= p[1][0];
p[1][2] /= p[1][0];
p[2] = Mat.matVecMult(m, [
1,
el.coords.scrCoords[1] + (1 - offset[0]) * el.size[0],
el.coords.scrCoords[2] - offset[1] * el.size[1] + this.vOffsetText
]);
p[2][1] /= p[2][0];
p[2][2] /= p[2][0];
p[3] = Mat.matVecMult(m, [
1,
el.coords.scrCoords[1] - offset[0] * el.size[0],
el.coords.scrCoords[2] - offset[1] * el.size[1] + this.vOffsetText
]);
p[3][1] /= p[3][0];
p[3][2] /= p[3][0];
maxX = p[0][1];
minX = p[0][1];
maxY = p[0][2];
minY = p[0][2];
for (i = 1; i < 4; i++) {
maxX = Math.max(maxX, p[i][1]);
minX = Math.min(minX, p[i][1]);
maxY = Math.max(maxY, p[i][2]);
minY = Math.min(minY, p[i][2]);
}
// Horizontal
v =
offset[0] === 1
? Math.floor(el.board.canvasWidth - maxX)
: Math.floor(minX);
if (el.visPropOld.left !== ev_ax + v) {
if (offset[0] === 1) {
el.rendNode.style.right = v + 'px';
el.rendNode.style.left = 'auto';
} else {
el.rendNode.style.left = v + 'px';
el.rendNode.style.right = 'auto';
}
el.visPropOld.left = ev_ax + v;
}
// Vertical
v =
offset[1] === 1
? Math.floor(el.board.canvasHeight - maxY)
: Math.floor(minY);
if (el.visPropOld.top !== ev_ay + v) {
if (offset[1] === 1) {
el.rendNode.style.bottom = v + 'px';
el.rendNode.style.top = 'auto';
} else {
el.rendNode.style.top = v + 'px';
el.rendNode.style.bottom = 'auto';
}
el.visPropOld.top = ev_ay + v;
}
}
if (el.htmlStr !== content) {
el.rendNodeText.data = content;
el.htmlStr = content;
}
//this.transformRect(el, el.transformations);
node.filters.item(0).M11 = m[1][1];
node.filters.item(0).M12 = m[1][2];
node.filters.item(0).M21 = m[2][1];
node.filters.item(0).M22 = m[2][2];
node.filters.item(0).enabled = true;
},
/* **************************
* Image related stuff
* **************************/
// Already documented in JXG.AbstractRenderer
drawImage: function (el) {
// IE 8: Bilder ueber data URIs werden bis 32kB unterstuetzt.
var node;
node = this.container.ownerDocument.createElement('img');
node.style.position = 'absolute';
this._setAttr(node, "id", this.container.id + "_" + el.id);
this.container.appendChild(node);
this.appendChildPrim(node, el.evalVisProp('layer'));
// Adding the rotation filter. This is always filter item 0:
// node.filters.item(0), see transformRect
// Also add the alpha filter. This is always filter item 1
// node.filters.item(1), see setObjectFillColor and setObjectSTrokeColor
//node.style.filter = node.style['-ms-filter'] = "progid:DXImageTransform.Microsoft.Matrix(M11='1.0', sizingMethod='auto expand')";
node.style.filter =
"progid:DXImageTransform.Microsoft.Matrix(M11='1.0', sizingMethod='auto expand') progid:DXImageTransform.Microsoft.Alpha(opacity = 100, enabled = false)";
el.rendNode = node;
this.updateImage(el);
},
// Already documented in JXG.AbstractRenderer
transformRect: function (el, t) {
var m,
maxX,
maxY,
minX,
minY,
i,
node = el.rendNode,
p = [],
len = t.length;
if (len > 0) {
/*
nt = el.rendNode.style.filter.toString();
if (!nt.match(/DXImageTransform/)) {
node.style.filter = "progid:DXImageTransform.Microsoft.Matrix(M11='1.0', sizingMethod='auto expand') " + nt;
}
*/
m = this.joinTransforms(el, t);
p[0] = Mat.matVecMult(m, el.coords.scrCoords);
p[0][1] /= p[0][0];
p[0][2] /= p[0][0];
p[1] = Mat.matVecMult(m, [
1,
el.coords.scrCoords[1] + el.size[0],
el.coords.scrCoords[2]
]);
p[1][1] /= p[1][0];
p[1][2] /= p[1][0];
p[2] = Mat.matVecMult(m, [
1,
el.coords.scrCoords[1] + el.size[0],
el.coords.scrCoords[2] - el.size[1]
]);
p[2][1] /= p[2][0];
p[2][2] /= p[2][0];
p[3] = Mat.matVecMult(m, [
1,
el.coords.scrCoords[1],
el.coords.scrCoords[2] - el.size[1]
]);
p[3][1] /= p[3][0];
p[3][2] /= p[3][0];
maxX = p[0][1];
minX = p[0][1];
maxY = p[0][2];
minY = p[0][2];
for (i = 1; i < 4; i++) {
maxX = Math.max(maxX, p[i][1]);
minX = Math.min(minX, p[i][1]);
maxY = Math.max(maxY, p[i][2]);
minY = Math.min(minY, p[i][2]);
}
node.style.left = Math.floor(minX) + 'px';
node.style.top = Math.floor(minY) + 'px';
node.filters.item(0).M11 = m[1][1];
node.filters.item(0).M12 = m[1][2];
node.filters.item(0).M21 = m[2][1];
node.filters.item(0).M22 = m[2][2];
node.filters.item(0).enabled = true;
}
},
// Already documented in JXG.AbstractRenderer
updateImageURL: function (el) {
var url = el.eval(el.url);
this._setAttr(el.rendNode, "src", url);
},
/* **************************
* Render primitive objects
* **************************/
// Already documented in JXG.AbstractRenderer
appendChildPrim: function (node, level) {
// For trace nodes
if (!Type.exists(level)) {
level = 0;
}
node.style.zIndex = level;
this.container.appendChild(node);
return node;
},
// Already documented in JXG.AbstractRenderer
appendNodesToElement: function (el, type) {
if (type === "shape" || type === "path" || type === 'polygon') {
el.rendNodePath = this.getElementById(el.id + "_path");
}
el.rendNodeFill = this.getElementById(el.id + "_fill");
el.rendNodeStroke = this.getElementById(el.id + "_stroke");
el.rendNodeShadow = this.getElementById(el.id + "_shadow");
el.rendNode = this.getElementById(el.id);
},
// Already documented in JXG.AbstractRenderer
createPrim: function (type, id) {
var node,
pathNode,
fillNode = this.createNode('fill'),
strokeNode = this.createNode('stroke'),
shadowNode = this.createNode('shadow');
this._setAttr(fillNode, "id", this.container.id + "_" + id + "_fill");
this._setAttr(strokeNode, "id", this.container.id + "_" + id + "_stroke");
this._setAttr(shadowNode, "id", this.container.id + "_" + id + "_shadow");
if (type === "circle" || type === 'ellipse') {
node = this.createNode('oval');
node.appendChild(fillNode);
node.appendChild(strokeNode);
node.appendChild(shadowNode);
} else if (
type === "polygon" ||
type === "path" ||
type === "shape" ||
type === "line"
) {
node = this.createNode('shape');
node.appendChild(fillNode);
node.appendChild(strokeNode);
node.appendChild(shadowNode);
pathNode = this.createNode('path');
this._setAttr(pathNode, "id", this.container.id + "_" + id + "_path");
node.appendChild(pathNode);
} else {
node = this.createNode(type);
node.appendChild(fillNode);
node.appendChild(strokeNode);
node.appendChild(shadowNode);
}
node.style.position = 'absolute';
node.style.left = '0px';
node.style.top = '0px';
this._setAttr(node, "id", this.container.id + "_" + id);
return node;
},
// Already documented in JXG.AbstractRenderer
remove: function (node) {
if (Type.exists(node)) {
node.removeNode(true);
}
},
// Already documented in JXG.AbstractRenderer
makeArrows: function (el) {
var nodeStroke,
ev_fa = el.evalVisProp('firstarrow'),
ev_la = el.evalVisProp('lastarrow');
if (el.visPropOld.firstarrow === ev_fa && el.visPropOld.lastarrow === ev_la) {
return;
}
if (ev_fa) {
nodeStroke = el.rendNodeStroke;
this._setAttr(nodeStroke, "startarrow", 'block');
this._setAttr(nodeStroke, "startarrowlength", 'long');
} else {
nodeStroke = el.rendNodeStroke;
if (Type.exists(nodeStroke)) {
this._setAttr(nodeStroke, "startarrow", 'none');
}
}
if (ev_la) {
nodeStroke = el.rendNodeStroke;
this._setAttr(nodeStroke, "id", this.container.id + "_" + el.id + 'stroke');
this._setAttr(nodeStroke, "endarrow", 'block');
this._setAttr(nodeStroke, "endarrowlength", 'long');
} else {
nodeStroke = el.rendNodeStroke;
if (Type.exists(nodeStroke)) {
this._setAttr(nodeStroke, "endarrow", 'none');
}
}
el.visPropOld.firstarrow = ev_fa;
el.visPropOld.lastarrow = ev_la;
},
// Already documented in JXG.AbstractRenderer
updateEllipsePrim: function (node, x, y, rx, ry) {
node.style.left = Math.floor(x - rx) + 'px';
node.style.top = Math.floor(y - ry) + 'px';
node.style.width = Math.floor(Math.abs(rx) * 2) + 'px';
node.style.height = Math.floor(Math.abs(ry) * 2) + 'px';
},
// Already documented in JXG.AbstractRenderer
updateLinePrim: function (node, p1x, p1y, p2x, p2y, board) {
var s,
r = this.resolution;
if (!isNaN(p1x + p1y + p2x + p2y)) {
s = [
"m ",
Math.floor(r * p1x),
", ",
Math.floor(r * p1y),
" l ",
Math.floor(r * p2x),
", ",
Math.floor(r * p2y)
];
this.updatePathPrim(node, s, board);
}
},
// Already documented in JXG.AbstractRenderer
updatePathPrim: function (node, pointString, board) {
var x = board.canvasWidth,
y = board.canvasHeight;
if (pointString.length <= 0) {
pointString = ["m 0,0"];
}
node.style.width = x;
node.style.height = y;
this._setAttr(
node,
"coordsize",
[Math.floor(this.resolution * x), Math.floor(this.resolution * y)].join(",")
);
this._setAttr(node, "path", pointString.join(""));
},
// Already documented in JXG.AbstractRenderer
updatePathStringPoint: function (el, size, type) {
var s = [],
mround = Math.round,
scr = el.coords.scrCoords,
sqrt32 = size * Math.sqrt(3) * 0.5,
s05 = size * 0.5,
r = this.resolution;
if (type === 'x') {
s.push(
[
" m ",
mround(r * (scr[1] - size)),
", ",
mround(r * (scr[2] - size)),
" l ",
mround(r * (scr[1] + size)),
", ",
mround(r * (scr[2] + size)),
" m ",
mround(r * (scr[1] + size)),
", ",
mround(r * (scr[2] - size)),
" l ",
mround(r * (scr[1] - size)),
", ",
mround(r * (scr[2] + size))
].join("")
);
} else if (type === "+") {
s.push(
[
" m ",
mround(r * (scr[1] - size)),
", ",
mround(r * scr[2]),
" l ",
mround(r * (scr[1] + size)),
", ",
mround(r * scr[2]),
" m ",
mround(r * scr[1]),
", ",
mround(r * (scr[2] - size)),
" l ",
mround(r * scr[1]),
", ",
mround(r * (scr[2] + size))
].join("")
);
} else if (type === "<>" || type === "<<>>") {
if (type === "<<>>") {
size *= 1.41;
}
s.push(
[
" m ",
mround(r * (scr[1] - size)),
", ",
mround(r * scr[2]),
" l ",
mround(r * scr[1]),
", ",
mround(r * (scr[2] + size)),
" l ",
mround(r * (scr[1] + size)),
", ",
mround(r * scr[2]),
" l ",
mround(r * scr[1]),
", ",
mround(r * (scr[2] - size)),
" x e "
].join("")
);
} else if (type === "^") {
s.push(
[
" m ",
mround(r * scr[1]),
", ",
mround(r * (scr[2] - size)),
" l ",
mround(r * (scr[1] - sqrt32)),
", ",
mround(r * (scr[2] + s05)),
" l ",
mround(r * (scr[1] + sqrt32)),
", ",
mround(r * (scr[2] + s05)),
" x e "
].join("")
);
} else if (type === 'v') {
s.push(
[
" m ",
mround(r * scr[1]),
", ",
mround(r * (scr[2] + size)),
" l ",
mround(r * (scr[1] - sqrt32)),
", ",
mround(r * (scr[2] - s05)),
" l ",
mround(r * (scr[1] + sqrt32)),
", ",
mround(r * (scr[2] - s05)),
" x e "
].join("")
);
} else if (type === ">") {
s.push(
[
" m ",
mround(r * (scr[1] + size)),
", ",
mround(r * scr[2]),
" l ",
mround(r * (scr[1] - s05)),
", ",
mround(r * (scr[2] - sqrt32)),
" l ",
mround(r * (scr[1] - s05)),
", ",
mround(r * (scr[2] + sqrt32)),
" l ",
mround(r * (scr[1] + size)),
", ",
mround(r * scr[2])
].join("")
);
} else if (type === "<") {
s.push(
[
" m ",
mround(r * (scr[1] - size)),
", ",
mround(r * scr[2]),
" l ",
mround(r * (scr[1] + s05)),
", ",
mround(r * (scr[2] - sqrt32)),
" l ",
mround(r * (scr[1] + s05)),
", ",
mround(r * (scr[2] + sqrt32)),
" x e "
].join("")
);
}
return s;
},
// Already documented in JXG.AbstractRenderer
updatePathStringPrim: function (el) {
var i,
scr,
pStr = [],
r = this.resolution,
mround = Math.round,
symbm = " m ",
symbl = " l ",
symbc = " c ",
nextSymb = symbm,
len = Math.min(el.numberPoints, 8192); // otherwise IE 7 crashes in hilbert.html
if (el.numberPoints <= 0) {
return "";
}
len = Math.min(len, el.points.length);
if (el.bezierDegree === 1) {
for (i = 0; i < len; i++) {
scr = el.points[i].scrCoords;
if (isNaN(scr[1]) || isNaN(scr[2])) {
// PenUp
nextSymb = symbm;
} else {
// IE has problems with values being too far away.
if (scr[1] > 20000.0) {
scr[1] = 20000.0;
} else if (scr[1] < -20000.0) {
scr[1] = -20000.0;
}
if (scr[2] > 20000.0) {
scr[2] = 20000.0;
} else if (scr[2] < -20000.0) {
scr[2] = -20000.0;
}
pStr.push(
[nextSymb, mround(r * scr[1]), ", ", mround(r * scr[2])].join("")
);
nextSymb = symbl;
}
}
} else if (el.bezierDegree === 3) {
i = 0;
while (i < len) {
scr = el.points[i].scrCoords;
if (isNaN(scr[1]) || isNaN(scr[2])) {
// PenUp
nextSymb = symbm;
} else {
pStr.push(
[nextSymb, mround(r * scr[1]), ", ", mround(r * scr[2])].join("")
);
if (nextSymb === symbc) {
i += 1;
scr = el.points[i].scrCoords;
pStr.push(
[" ", mround(r * scr[1]), ", ", mround(r * scr[2])].join("")
);
i += 1;
scr = el.points[i].scrCoords;
pStr.push(
[" ", mround(r * scr[1]), ", ", mround(r * scr[2])].join("")
);
}
nextSymb = symbc;
}
i += 1;
}
}
pStr.push(" e");
return pStr;
},
// Already documented in JXG.AbstractRenderer
updatePathStringBezierPrim: function (el) {
var i,
j,
k,
scr,
lx,
ly,
pStr = [],
f = el.evalVisProp('strokewidth'),
r = this.resolution,
mround = Math.round,
symbm = " m ",
symbl = " c ",
nextSymb = symbm,
isNoPlot = el.evalVisProp('curvetype') !== "plot",
len = Math.min(el.numberPoints, 8192); // otherwise IE 7 crashes in hilbert.html
if (el.numberPoints <= 0) {
return "";
}
if (isNoPlot && el.board.options.curve.RDPsmoothing) {
el.points = Numerics.RamerDouglasPeucker(el.points, 1.0);
}
len = Math.min(len, el.points.length);
for (j = 1; j < 3; j++) {
nextSymb = symbm;
for (i = 0; i < len; i++) {
scr = el.points[i].scrCoords;
if (isNaN(scr[1]) || isNaN(scr[2])) {
// PenUp
nextSymb = symbm;
} else {
// IE has problems with values being too far away.
if (scr[1] > 20000.0) {
scr[1] = 20000.0;
} else if (scr[1] < -20000.0) {
scr[1] = -20000.0;
}
if (scr[2] > 20000.0) {
scr[2] = 20000.0;
} else if (scr[2] < -20000.0) {
scr[2] = -20000.0;
}
if (nextSymb === symbm) {
pStr.push(
[nextSymb, mround(r * scr[1]), " ", mround(r * scr[2])].join("")
);
} else {
k = 2 * j;
pStr.push(
[
nextSymb,
mround(
r *
(lx +
(scr[1] - lx) * 0.333 +
f * (k * Math.random() - j))
),
" ",
mround(
r *
(ly +
(scr[2] - ly) * 0.333 +
f * (k * Math.random() - j))
),
" ",
mround(
r *
(lx +
(scr[1] - lx) * 0.666 +
f * (k * Math.random() - j))
),
" ",
mround(
r *
(ly +
(scr[2] - ly) * 0.666 +
f * (k * Math.random() - j))
),
" ",
mround(r * scr[1]),
" ",
mround(r * scr[2])
].join("")
);
}
nextSymb = symbl;
lx = scr[1];
ly = scr[2];
}
}
}
pStr.push(" e");
return pStr;
},
// Already documented in JXG.AbstractRenderer
updatePolygonPrim: function (node, el) {
var i,
len = el.vertices.length,
r = this.resolution,
scr,
pStr = [];
this._setAttr(node, "stroked", 'false');
scr = el.vertices[0].coords.scrCoords;
if (isNaN(scr[1] + scr[2])) {
return;
}
pStr.push(
["m ", Math.floor(r * scr[1]), ",", Math.floor(r * scr[2]), " l "].join("")
);
for (i = 1; i < len - 1; i++) {
if (el.vertices[i].isReal) {
scr = el.vertices[i].coords.scrCoords;
if (isNaN(scr[1] + scr[2])) {
return;
}
pStr.push(Math.floor(r * scr[1]) + "," + Math.floor(r * scr[2]));
} else {
this.updatePathPrim(node, "", el.board);
return;
}
if (i < len - 2) {
pStr.push(", ");
}
}
pStr.push(" x e");
this.updatePathPrim(node, pStr, el.board);
},
// Already documented in JXG.AbstractRenderer
updateRectPrim: function (node, x, y, w, h) {
node.style.left = Math.floor(x) + 'px';
node.style.top = Math.floor(y) + 'px';
if (w >= 0) {
node.style.width = w + 'px';
}
if (h >= 0) {
node.style.height = h + 'px';
}
},
/* **************************
* Set Attributes
* **************************/
// Already documented in JXG.AbstractRenderer
setPropertyPrim: function (node, key, val) {
var keyVml = "",
v;
switch (key) {
case "stroke":
keyVml = 'strokecolor';
break;
case "stroke-width":
keyVml = 'strokeweight';
break;
case "stroke-dasharray":
keyVml = 'dashstyle';
break;
}
if (keyVml !== "") {
v = val;
this._setAttr(node, keyVml, v);
}
},
// Already documented in JXG.AbstractRenderer
display: function (el, val) {
if (el && el.rendNode) {
el.visPropOld.visible = val;
if (val) {
el.rendNode.style.visibility = 'inherit';
} else {
el.rendNode.style.visibility = 'hidden';
}
}
},
// Already documented in JXG.AbstractRenderer
show: function (el) {
JXG.deprecated("Board.renderer.show()", "Board.renderer.display()");
if (el && el.rendNode) {
el.rendNode.style.visibility = 'inherit';
}
},
// Already documented in JXG.AbstractRenderer
hide: function (el) {
JXG.deprecated("Board.renderer.hide()", "Board.renderer.display()");
if (el && el.rendNode) {
el.rendNode.style.visibility = 'hidden';
}
},
// Already documented in JXG.AbstractRenderer
setDashStyle: function (el, visProp) {
var node;
if (visProp.dash >= 0) {
node = el.rendNodeStroke;
this._setAttr(node, "dashstyle", this.dashArray[visProp.dash]);
}
},
// Already documented in JXG.AbstractRenderer
setGradient: function (el) {
var nodeFill = el.rendNodeFill,
ev_g = el.evalVisProp('gradient');
if (ev_g === 'linear') {
this._setAttr(nodeFill, "type", 'gradient');
this._setAttr(
nodeFill,
"color2",
el.evalVisProp('gradientsecondcolor')
);
this._setAttr(
nodeFill,
"opacity2",
el.evalVisProp('gradientsecondopacity')
);
this._setAttr(nodeFill, "angle", el.evalVisProp('gradientangle'));
} else if (ev_g === 'radial') {
this._setAttr(nodeFill, "type", 'gradientradial');
this._setAttr(
nodeFill,
"color2",
el.evalVisProp('gradientsecondcolor')
);
this._setAttr(
nodeFill,
"opacity2",
el.evalVisProp('gradientsecondopacity')
);
this._setAttr(
nodeFill,
"focusposition",
el.evalVisProp('gradientpositionx') * 100 +
"%," +
el.evalVisProp('gradientpositiony') * 100 +
"%"
);
this._setAttr(nodeFill, "focussize", "0,0");
} else {
this._setAttr(nodeFill, "type", 'solid');
}
},
// Already documented in JXG.AbstractRenderer
setObjectFillColor: function (el, color, opacity) {
var rgba = color,
c,
rgbo,
o = opacity,
oo,
node = el.rendNode;
o = o > 0 ? o : 0;
if (el.visPropOld.fillcolor === rgba && el.visPropOld.fillopacity === o) {
return;
}
if (Type.exists(rgba) && rgba !== false) {
// RGB, not RGBA
if (rgba.length !== 9) {
c = rgba;
oo = o;
// True RGBA, not RGB
} else {
rgbo = Color.rgba2rgbo(rgba);
c = rgbo[0];
oo = o * rgbo[1];
}
if (c === "none" || c === false) {
this._setAttr(el.rendNode, "filled", 'false');
} else {
this._setAttr(el.rendNode, "filled", 'true');
this._setAttr(el.rendNode, "fillcolor", c);
if (Type.exists(oo) && el.rendNodeFill) {
this._setAttr(el.rendNodeFill, "opacity", oo * 100 + "%");
}
}
if (el.type === Const.OBJECT_TYPE_IMAGE) {
/*
t = el.rendNode.style.filter.toString();
if (t.match(/alpha/)) {
el.rendNode.style.filter = t.replace(/alpha\(opacity *= *[0-9\.]+\)/, 'alpha(opacity = ' + (oo * 100) + ')');
} else {
el.rendNode.style.filter += ' alpha(opacity = ' + (oo * 100) + ')';
}
*/
if (node.filters.length > 1) {
// Why am I sometimes seeing node.filters.length==0 here when I move the pointer around near [0,0]?
// Setting axes:true shows text labels!
node.filters.item(1).opacity = Math.round(oo * 100); // Why does setObjectFillColor not use Math.round?
node.filters.item(1).enabled = true;
}
}
}
el.visPropOld.fillcolor = rgba;
el.visPropOld.fillopacity = o;
},
// Already documented in JXG.AbstractRenderer
setObjectStrokeColor: function (el, color, opacity) {
var rgba = color,
c,
rgbo,
o = opacity,
oo,
node = el.rendNode,
nodeStroke;
o = o > 0 ? o : 0;
if (el.visPropOld.strokecolor === rgba && el.visPropOld.strokeopacity === o) {
return;
}
// this looks like it could be merged with parts of VMLRenderer.setObjectFillColor
if (Type.exists(rgba) && rgba !== false) {
// RGB, not RGBA
if (rgba.length !== 9) {
c = rgba;
oo = o;
// True RGBA, not RGB
} else {
rgbo = color.rgba2rgbo(rgba);
c = rgbo[0];
oo = o * rgbo[1];
}
if (el.elementClass === Const.OBJECT_CLASS_TEXT) {
//node.style.filter = ' alpha(opacity = ' + oo + ')';
/*
t = node.style.filter.toString();
if (t.match(/alpha/)) {
node.style.filter =
t.replace(/alpha\(opacity *= *[0-9\.]+\)/, 'alpha(opacity = ' + oo + ')');
} else {
node.style.filter += ' alpha(opacity = ' + oo + ')';
}
*/
if (node.filters.length > 1) {
// Why am I sometimes seeing node.filters.length==0 here when I move the pointer around near [0,0]?
// Setting axes:true shows text labels!
node.filters.item(1).opacity = Math.round(oo * 100);
node.filters.item(1).enabled = true;
}
node.style.color = c;
} else {
if (c !== false) {
this._setAttr(node, "stroked", 'true');
this._setAttr(node, "strokecolor", c);
}
nodeStroke = el.rendNodeStroke;
if (Type.exists(oo) && el.type !== Const.OBJECT_TYPE_IMAGE) {
this._setAttr(nodeStroke, "opacity", oo * 100 + "%");
}
}
}
el.visPropOld.strokecolor = rgba;
el.visPropOld.strokeopacity = o;
},
// Already documented in JXG.AbstractRenderer
setObjectStrokeWidth: function (el, width) {
var w = Type.evaluate(width),
node;
if (isNaN(w) || el.visPropOld.strokewidth === w) {
return;
}
node = el.rendNode;
this.setPropertyPrim(node, "stroked", 'true');
if (Type.exists(w)) {
this.setPropertyPrim(node, "stroke-width", w);
if (w === 0 && Type.exists(el.rendNodeStroke)) {
this._setAttr(node, "stroked", 'false');
}
}
el.visPropOld.strokewidth = w;
},
// Already documented in JXG.AbstractRenderer
setShadow: function (el) {
var nodeShadow = el.rendNodeShadow,
ev_s = el.evalVisProp('shadow');
if (!nodeShadow || el.visPropOld.shadow === ev_s) {
return;
}
if (ev_s) {
this._setAttr(nodeShadow, "On", 'True');
this._setAttr(nodeShadow, "Offset", "3pt,3pt");
this._setAttr(nodeShadow, "Opacity", "60%");
this._setAttr(nodeShadow, "Color", "#aaaaaa");
} else {
this._setAttr(nodeShadow, "On", 'False');
}
el.visPropOld.shadow = ev_s;
},
/* **************************
* renderer control
* **************************/
// Already documented in JXG.AbstractRenderer
suspendRedraw: function () {
this.container.style.display = 'none';
},
// Already documented in JXG.AbstractRenderer
unsuspendRedraw: function () {
this.container.style.display = "";
}
}
);
export default JXG.VMLRenderer;