sbrl-github
/
Air-Quality-Web
mirror of https://github.com/ConnectedHumber/Air-Quality-Web
1
0
Fork 0
Code Issues Releases Wiki Activity
Browse Source

Port SVGWriter to javascript

pull/35/head
Starbeamrainbowlabs 3 years ago
parent
233d780123
commit
a8444fdde6
Signed by: sbrl
GPG Key ID: 1BE5172E637709C2
5 changed files with 530 additions and 41 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 197
      client_src/js/Helpers/SVGWriter.mjs
  2. 316
      client_src/js/Helpers/Vector2.mjs
  3. 9
      client_src/js/Overlay/VoronoiOverlay.mjs
  4. 44
      package-lock.json
  5. 5
      package.json

197
client_src/js/Helpers/SVGWriter.mjs
Unescape View File

@ -0,0 +1,197 @@ @@ -0,0 +1,197 @@
"use strict";
import XMLWriter from 'xml-writer';
import Vector2 from './Vector2.mjs';
/*
* Simplifies the process for creating an SVG dynamically.
* Originally written for MusicBoxConverter, but lifted, reused, and extended for FloatingIslands.
* Ported from C# to Javascript for AirQualityWeb.
* @license MPL-2.0
*/
class SvgWriter {
constructor(viewBox) {
// string outputFilename, string widthspec = "100%", string heightspec = "100%", Rectangle? rawViewBox = null
this.unitSuffix = "";
// ----------------------------------
this.xml = new XMLWriter();
this.xml.startDocument();
this.xml.writeDocType("svg", "-//W3C//DTD SVG 1.1//EN", "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd", null);
this.xml.writeComment("Generated by SVGWriter which was written by Starbeamrainbowlabs");
this.xml.startElement("svg", "http://www.w3.org/2000/svg");
this.xml.writeAttribute("version", "1.1");
this.xml.writeAttribute("x", "0");
this.xml.writeAttribute("y", "0");
this.xml.writeAttribute("width", widthspec);
this.xml.writeAttribute("height", heightspec);
if (rawViewBox != null) {
this.xml.writeAttribute(
"viewBox",
`${viewBox.x} ${viewBox.y} ${viewBox.width} ${viewBox.height}`
);
}
}
/**
* Completes the SVG image currently being generated and closes the underlying file stream.
* @return {this}
*/
complete() {
this.xml.endElement();
this.xml.endDocument();
return this;
}
toString() {
return this.xml.toString();
}
/**
* Adds a line to the image.
* @param {Vector2} start The start position of the line.
* @param {Vector2} end The end position of the line.
* @param {String} [strokeStyle="darkgreen"] The colour to draw the line.
* @param {Number} [strokeWidth=3] The width to draw the line.
*/
addLine(start, end, strokeStyle = "darkgreen", strokeWidth = 3) {
this.xml.startElement("line");
this.xml.writeAttribute("x1", `${start.X}${UnitSuffix}`);
this.xml.writeAttribute("y1", `${start.Y}${UnitSuffix}`);
this.xml.writeAttribute("x2", `${end.X}${UnitSuffix}`);
this.xml.writeAttribute("y2", `${end.Y}${UnitSuffix}`);
this.xml.writeAttribute("stroke", strokeStyle);
this.xml.writeAttribute("stroke-width", strokeWidth.toString());
this.xml.endElement();
return this;
}
/**
* Opens a new SVG group.
* @param {string} [classes=null] The class(es) to apply to the new group.
* @param {string} [transform=null] The transform(s) to apply to the new group.
* @return {this}
*/
startGroup(classes = null, transform = null) {
this.xml.startElement("g");
if(classes != null)
this.xml.writeAttribute("class", classes);
if (transform != null)
this.xml.writeAttribute("transform", transform);
return this;
}
/**
* Ends the most recently created unclosed group.
* @return {this}
*/
endGroup() {
this.xml.endElement();
return this;
}
/// <summary>
///
/// </summary>
/// <param name="scale"></param>
/**
* Starts a scale transform.
* @param {number} scale The scale to enlarge (or shrink!) the next items by.
* @return {this}
*/
startScaleTransform(scale)
{
this.xml.startElement("g");
this.xml.writeAttribute("transform", `scale(${scale})`);
return this;
}
/**
* Ends the most recently created scale transform.
* @return {this}
*/
endTransform() {
this.xml.endElement();
return this;
}
/**
* Adds a hollow rectangle to the image.
* @param {Vector2} position The position of the rectangle.
* @param {Vector2} size The size of the rectangle.
* @param {string} strokeStyle The colour to use when drawing.
* @param {float} strokeWidth The line width to use when drawing.
* @return {this}
*/
addRectangle(position, size, strokeStyle = "red", strokeWidth = 3) {
this.xml.startElement("rect");
this.xml.writeAttribute("x", `${position.x}${this.unitSuffix}`);
this.xml.writeAttribute("y", `${position.y}${this.unitSuffix}`);
this.xml.writeAttribute("width", `${size.X}${this.unitSuffix}`);
this.xml.writeAttribute("height", `${size.Y}${this.unitSuffix}`);
this.xml.writeAttribute("fill", "none");
this.xml.writeAttribute("stroke", strokeStyle);
this.xml.writeAttribute("stroke-width", strokeWidth.toString());
this.xml.endElement();
return this;
}
/**
* Adds a circle to the image.
* @param {Vector2} centre The position of the centre of the circle.
* @param {Number} radius The radius of the circle.
* @param {String} [fillStyle="blue"] The colour to fill the circle with.
* @return {this}
*/
addCircle(centre, radius, fillStyle = "blue") {
this.xml.startElement("circle");
this.xml.writeAttribute("cx", `${centre.x}${this.unitSuffix}`);
this.xml.writeAttribute("cy", `${centre.y}${this.unitSuffix}`);
this.xml.writeAttribute("r", `${radius}${this.unitSuffix}`);
this.xml.writeAttribute("fill", fillStyle);
this.xml.endElement();
return this;
}
/**
* Adds a solid n-sided polygon to the image.
* @param {string} fillStyle The colour to fill the polygon with.
* @param {Vector2[]} points The co-ordinates that make up the polygon.
* @return {this}
*/
addPolygon(fillStyle, points)
{
this.xml.startElement("polygon");
this.xml.writeAttribute("fill", fillStyle);
this.xml.writeAttribute(
"points",
points.map((point) => `${point.x}${point.y}`).join(" ")
);
this.xml.endElement();
return this;
}
/**
* Adds an isosceles / equilateral triangle to the image.
* This is a shorthand method that calls AddPolygon() under-the-hood.
* @param {Vector2} position The position to draw the triangle at.
* @param {Number} baseWidth The width of the triangle's base.
* @param {Number} height The height of the triangle.
* @param {Boolean} upsideDown If set to true, then the triangle will point downwards instead of upwards.
* @param {string} fillStyle The colour to fill the triangle with.
* @return {this}
*/
addTriangleRegular(position, baseWidth, height, upsideDown, fillStyle)
{
this.addPolygon(
fillStyle,
position.subtract(new Vector2(baseWidth / 2, 0)),
position.add(new Vector2(baseWidth / 2, 0)),
position.subtract(new Vector2(0, upsideDown ? -height : height))
);
return this;
}
}
export default SvgWriter;

316
client_src/js/Helpers/Vector2.mjs
Unescape View File

@ -0,0 +1,316 @@ @@ -0,0 +1,316 @@
"use strict";
/******************************************************
************** Simple ES6 Vector Class **************
******************************************************
* Author: Starbeamrainbowlabs
* Twitter: @SBRLabs
* Email: feedback at starbeamrainbowlabs dot com
*
* From https://gist.github.com/sbrl/69a8fa588865cacef9c0
******************************************************
* Originally written for my 2D Graphics ACW at Hull
* University.
******************************************************
* Changelog
******************************************************
* 19th December 2015:
* Added this changelog.
* 28th December 2015:
* Rewrite tests with klud.js + Node.js
* 30th January 2016:
* Tweak angleFrom function to make it work properly.
* 31st January 2016:
* Add the moveTowards function.
* Add the minComponent getter.
* Add the maxComponent getter.
* Add the equalTo function.
* Tests still need to be written for all of the above.
* 19th September 2016:
* Added Vector support to the multiply method.
* 10th June 2017:
* Fixed a grammatical mistake in a comment.
* Added Vector.fromBearing static method.
* 21st October 2017:
* Converted to ES6 module.
* Added Vector.zero and Vector.one constants. Remember to clone them!
* 4th August 2018: (#LOWREZJAM!)
* Optimised equalTo()
* 6th August 2018: (#LOWREZJAM again!)
* Added round(), floor(), and ceil()
* 7th August 2018: (moar #LOWREZJAM :D)
* Added area() and snapTo(grid_size)
* 10th August 2018: (even more #LOWREZJAM!)
* Added Vector support to divide()
*/
class Vector {
// Constructor
constructor(inX, inY) {
if(typeof inX != "number")
throw new Error("Invalid x value.");
if(typeof inY != "number")
throw new Error("Invalid y value.");
// Store the (x, y) coordinates
this.x = inX;
this.y = inY;
}
/**
* Add another vector to this vector.
* @param {Vector} v The vector to add.
* @return {Vector} The current vector. useful for daisy-chaining calls.
*/
add(v) {
this.x += v.x;
this.y += v.y;
return this;
}
/**
* Take another vector from this vector.
* @param {Vector} v The vector to subtrace from this one.
* @return {Vector} The current vector. useful for daisy-chaining calls.
*/
subtract(v) {
this.x -= v.x;
this.y -= v.y;
return this;
}
/**
* Divide the current vector by a given value.
* @param {Number|Vector} value The number (or Vector) to divide by.
* @return {Vector} The current vector. Useful for daisy-chaining calls.
*/
divide(value) {
if(value instanceof Vector)
{
this.x /= value.x;
this.y /= value.y;
}
else if(typeof value == "number")
{
this.x /= value;
this.y /= value;
}
else
throw new Error("Can't divide by non-number value.");
return this;
}
/**
* Multiply the current vector by a given value.
* @param {Number|Vector} value The number (or Vector) to multiply the current vector by.
* @return {Vector} The current vector. useful for daisy-chaining calls.
*/
multiply(value) {
if(value instanceof Vector)
{
this.x *= value.x;
this.y *= value.y;
}
else if(typeof value == "number")
{
this.x *= value;
this.y *= value;
}
else
throw new Error("Can't multiply by non-number value.");
return this;
}
/**
* Move the vector towards the given vector by the given amount.
* @param {Vector} v The vector to move towards.
* @param {Number} amount The distance to move towards the given vector.
*/
moveTowards(v, amount)
{
// From http://stackoverflow.com/a/2625107/1460422
var dir = new Vector(
v.x - this.x,
v.y - this.y
).limitTo(amount);
this.x += dir.x;
this.y += dir.y;
return this;
}
/**
* Rounds the x and y components of this vector down to the next integer.
* @return {Vector} This vector - useful for diasy-chaining.
*/
floor() {
this.x = Math.floor(this.x);
this.y = Math.floor(this.y);
return this;
}
/**
* Rounds the x and y components of this vector up to the next integer.
* @return {Vector} This vector - useful for diasy-chaining.
*/
ceil() {
this.x = Math.ceil(this.x);
this.y = Math.ceil(this.y);
return this;
}
/**
* Rounds the x and y components of this vector to the nearest integer.
* @return {Vector} This vector - useful for diasy-chaining.
*/
round() {
this.x = Math.round(this.x);
this.y = Math.round(this.y);
return this;
}
/**
* Calculates the 'area' of this vector and returns the result.
* In other words, returns x * y. Useful if you're using a Vector to store
* a size.
* @return {Number} The 'area' of this vector.
*/
area() {
return this.x * this.y;
}
/**
* Snaps this vector to an imaginary square grid with the specified sized
* squares.
* @param {Number} grid_size The size of the squares on the imaginary grid to which to snap.
* @return {Vector} The current vector - useful for daisy-chaining.
*/
snapTo(grid_size) {
this.x = Math.floor(this.x / grid_size) * grid_size;
this.y = Math.floor(this.y / grid_size) * grid_size;
return this;
}
/**
* Limit the length of the current vector to value without changing the
* direction in which the vector is pointing.
* @param {Number} value The number to limit the current vector's length to.
* @return {Vector} The current vector. useful for daisy-chaining calls.
*/
limitTo(value) {
if(typeof value != "number")
throw new Error("Can't limit to non-number value.");
this.divide(this.length);
this.multiply(value);
return this;
}
/**
* Return the dot product of the current vector and another vector.
* @param {Vector} v The other vector we should calculate the dot product with.
* @return {Vector} The current vector. Useful for daisy-chaining calls.
*/
dotProduct(v) {
return (this.x * v.x) + (this.y * v.y);
}
/**
* Calculate the angle, in radians, from north to another vector.
* @param {Vector} v The other vector to which to calculate the angle.
* @return {Vector} The current vector. useful for daisy-chaining calls.
*/
angleFrom(v) {
// From http://stackoverflow.com/a/16340752/1460422
var angle = Math.atan2(v.y - this.y, v.x - this.x) - (Math.PI / 2);
angle += Math.PI/2;
if(angle < 0) angle += Math.PI * 2;
return angle;
}
/**
* Clones the current vector.
* @return {Vector} A clone of the current vector. Very useful for passing around copies of a vector if you don't want the original to be altered.
*/
clone() {
return new Vector(this.x, this.y);
}
/*
* Returns a representation of the current vector as a string.
* @returns {string} A representation of the current vector as a string.
*/
toString() {
return `(${this.x}, ${this.y})`;
}
/**
* Whether the vector is equal to another vector.
* @param {Vector} v The vector to compare to.
* @return {boolean} Whether the current vector is equal to the given vector.
*/
equalTo(v)
{
return this.x == v.x && this.y == v.y;
}
/**
* Get the unit vector of the current vector - that is a vector poiting in the same direction with a length of 1. Note that this does *not* alter the original vector.
* @return {Vector} The current vector's unit form.
*/
get unitVector() {
var length = this.length;
return new Vector(
this.x / length,
this.y / length);
}
/**
* Get the length of the current vector.
* @return {Number} The length of the current vector.
*/
get length() {
return Math.sqrt((this.x * this.x) + (this.y * this.y));
}
/**
* Get the value of the minimum component of the vector.
* @return {Number} The minimum component of the vector.
*/
get minComponent() {
return Math.min(this.x, this.y);
}
/**
* Get the value of the maximum component of the vector.
* @return {Number} The maximum component of the vector.
*/
get maxComponent() {
return Math.min(this.x, this.y);
}
}
/**
* Returns a new vector based on an angle and a length.
* @param {Number} angle The angle, in radians.
* @param {Number} length The length.
* @return {Vector} A new vector that represents the (x, y) of the specified angle and length.
*/
Vector.fromBearing = function(angle, length) {
return new Vector(
length * Math.cos(angle),
length * Math.sin(angle)
);
}
Vector.zero = new Vector(0, 0);
Vector.one = new Vector(1, 1);
export default Vector;

9
client_src/js/Overlay/VoronoiOverlay.mjs
Unescape View File

@ -0,0 +1,9 @@ @@ -0,0 +1,9 @@
"use strict";
class VoronoiOverlay {
constructor() {
}
}
export default VoronoiOverlay;

44
package-lock.json generated
Unescape View File

@ -1,6 +1,6 @@ @@ -1,6 +1,6 @@
{
"name": "air-quality-mapper",
"version": "0.1.0",
"version": "0.9.1",
"lockfileVersion": 1,
"requires": true,
"dependencies": {
@ -1367,12 +1367,6 @@ @@ -1367,12 +1367,6 @@
}
}
},
"heatmap.js": {
"version": "2.0.5",
"resolved": "https://registry.npmjs.org/heatmap.js/-/heatmap.js-2.0.5.tgz",
"integrity": "sha1-Rm07hlE/XUkRKknSVwCrJzAUkVM=",
"dev": true
},
"hex-color-regex": {
"version": "1.1.0",
"resolved": "https://registry.npmjs.org/hex-color-regex/-/hex-color-regex-1.1.0.tgz",
@ -1711,37 +1705,6 @@ @@ -1711,37 +1705,6 @@
"resolved": "https://registry.npmjs.org/leaflet-fullscreen/-/leaflet-fullscreen-1.0.2.tgz",
"integrity": "sha1-CcYcS6xF9jsu4Sav2H5c2XZQ/Bs="
},
"leaflet-heatmap": {
"version": "1.0.0",
"resolved": "https://registry.npmjs.org/leaflet-heatmap/-/leaflet-heatmap-1.0.0.tgz",
"integrity": "sha1-g8wEJJ057ZFSauqn12ab2qhtax8=",
"dev": true,
"requires": {
"heatmap.js": "*",
"leaflet": "*"
}
},
"leaflet-timedimension": {
"version": "1.1.0",
"resolved": "https://registry.npmjs.org/leaflet-timedimension/-/leaflet-timedimension-1.1.0.tgz",
"integrity": "sha1-nuy9+SZqLvFKzoKC2x0b/VsVEAY=",
"requires": {
"iso8601-js-period": "0.2.0",
"leaflet": "~0.7.4 || ~1.0.0"
},
"dependencies": {
"iso8601-js-period": {
"version": "0.2.0",
"resolved": "https://registry.npmjs.org/iso8601-js-period/-/iso8601-js-period-0.2.0.tgz",
"integrity": "sha1-5XQP1OcguWCoXraF/CBSAWIcAYw="
},
"leaflet": {
"version": "1.0.3",
"resolved": "https://registry.npmjs.org/leaflet/-/leaflet-1.0.3.tgz",
"integrity": "sha1-H0AbmLRcgZITTGyNaWhiU4BQB8g="
}
}
},
"leaflet.markercluster": {
"version": "1.4.1",
"resolved": "https://registry.npmjs.org/leaflet.markercluster/-/leaflet.markercluster-1.4.1.tgz",
@ -4398,6 +4361,11 @@ @@ -4398,6 +4361,11 @@
"resolved": "https://registry.npmjs.org/vendors/-/vendors-1.0.2.tgz",
"integrity": "sha512-w/hry/368nO21AN9QljsaIhb9ZiZtZARoVH5f3CsFbawdLdayCgKRPup7CggujvySMxx0I91NOyxdVENohprLQ==",
"dev": true
},
"xml-writer": {
"version": "1.7.0",
"resolved": "https://registry.npmjs.org/xml-writer/-/xml-writer-1.7.0.tgz",
"integrity": "sha1-t28dWRwWomNOvbcDx729D9aBkGU="
}
}
}

5
package.json
Unescape View File

@ -23,13 +23,12 @@ @@ -23,13 +23,12 @@
"iso8601-js-period": "^0.2.1",
"leaflet": "^1.4.0",
"leaflet-fullscreen": "^1.0.2",
"leaflet-timedimension": "^1.1.0",
"leaflet.markercluster": "^1.4.1",
"leaflet-heatmap": "^1.0.0",
"moment": "^2.24.0",
"nanomodal": "^5.1.1",
"smartsettings": "^1.2.3",
"tabs": "^0.2.0"
"tabs": "^0.2.0",
"xml-writer": "^1.7.0"
},
"devDependencies": {
"@types/chart.js": "^2.7.51",

Write Preview
Loading…
Cancel
Save