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import { LineString, Point, Polygon } from "geom";
/**
* @typedef {Object} SvgOptions
* @property {Record<string, string|number>} [attributes] - SVG attributes
* @property {Record<string, string>} [styles] - CSS styles
* @property {string} [id] - Element ID
* @property {string[]} [classes] - CSS classes
* @property {SVGElement[]} [children] - Child elements
*/
export class Svg {
/**
* Create an SVG element
* @param {SvgOptions} [options={}]
* @returns {SVGSVGElement}
*/
static svg(options = {}) {
const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
const defaultAttributes = {
preserveAspectRatio: "xMidYMid slice",
...options.attributes,
};
Svg.#applyOptions(svg, { ...options, attributes: defaultAttributes });
return svg;
}
/**
* Create an SVG title element for tooltips
* @param {string} text - The tooltip text
* @returns {SVGTitleElement}
*/
static title(text) {
const title = document.createElementNS("http://www.w3.org/2000/svg", "title");
title.textContent = text;
return title;
}
/**
* Create a group element
* @param {SvgOptions} [options={}]
* @returns {SVGGElement}
*/
static g(options = {}) {
const g = document.createElementNS("http://www.w3.org/2000/svg", "g");
Svg.#applyOptions(g, options);
return g;
}
/**
* Create a polygon from Polygon geometry
* @param {Polygon} polygon
* @param {SvgOptions} [options={}]
* @returns {SVGPolygonElement}
*/
static polygon(polygon, options = {}) {
const element = document.createElementNS("http://www.w3.org/2000/svg", "polygon");
// Convert polygon rings to SVG points string
const exteriorRing = polygon.getExterior();
const points = exteriorRing.map(([x, y]) => `${x},${y}`).join(" ");
const defaultAttributes = {
fill: "rgba(100,150,255,0.2)",
points,
stroke: "#555",
"stroke-width": 0.001,
...options.attributes,
};
Svg.#applyOptions(element, { ...options, attributes: defaultAttributes });
return element;
}
/**
* Create a path from LineString geometry
* @param {LineString} lineString
* @param {SvgOptions} [options={}]
* @returns {SVGPathElement}
*/
static path(lineString, options = {}) {
const element = document.createElementNS("http://www.w3.org/2000/svg", "path");
// Convert LineString coordinates to SVG path data
const coords = lineString.coordinates;
let pathData = "";
if (coords.length > 0) {
const [startLng, startLat] = coords[0];
pathData = `M ${startLng},${startLat}`;
for (let i = 1; i < coords.length; i++) {
const [lng, lat] = coords[i];
pathData += ` L ${lng},${lat}`;
}
}
const defaultAttributes = {
d: pathData,
fill: "none",
stroke: "#000",
"stroke-linecap": "round",
"stroke-linejoin": "round",
"stroke-width": 0.001,
...options.attributes,
};
Svg.#applyOptions(element, { ...options, attributes: defaultAttributes });
return element;
}
/**
* Create a circle from Point geometry
* @param {Point} point
* @param {SvgOptions} [options={}]
* @returns {SVGCircleElement}
*/
static circle(point, options = {}) {
const element = document.createElementNS("http://www.w3.org/2000/svg", "circle");
const defaultAttributes = {
cx: point.lng,
cy: point.lat,
fill: "#4caf50",
r: 0.002,
stroke: "#333",
"stroke-width": 0.001,
...options.attributes,
};
Svg.#applyOptions(element, { ...options, attributes: defaultAttributes });
return element;
}
/**
* Create a rectangle
* @param {Point} point
* @param {number} width - Rectangle width
* @param {number} height - Rectangle height
* @param {SvgOptions} [options={}]
* @returns {SVGRectElement}
*/
static rect(point, width, height, options = {}) {
const element = document.createElementNS("http://www.w3.org/2000/svg", "rect");
const defaultAttributes = {
height,
width,
x: point.lng,
y: point.lat,
...options.attributes,
};
Svg.#applyOptions(element, { ...options, attributes: defaultAttributes });
return element;
}
/**
* Create a text element
* @param {Point} point - point
* @param {string} text - Text content
* @param {SvgOptions} [options={}]
* @returns {SVGTextElement}
*/
static text(point, text, options = {}) {
const element = document.createElementNS("http://www.w3.org/2000/svg", "text");
const defaultAttributes = {
x: point.lng,
y: point.lat,
...options.attributes,
};
const defaultStyles = {
dominantBaseline: "middle",
fill: "#333",
fontSize: "0.005",
pointerEvents: "none",
textAnchor: "middle",
...options.styles,
};
element.textContent = text;
Svg.#applyOptions(element, {
...options,
attributes: defaultAttributes,
styles: defaultStyles,
});
return element;
}
/**
* Create a circle element with explicit coordinates
* @param {Point} point - Center X coordinate
* @param {number} r - Radius
* @param {SvgOptions} [options={}]
* @returns {SVGCircleElement}
*/
static circleXY(point, r, options = {}) {
const element = document.createElementNS("http://www.w3.org/2000/svg", "circle");
const defaultAttributes = {
cx: point.lng,
cy: point.lat,
fill: "#4caf50",
r,
stroke: "#333",
"stroke-width": 0.001,
...options.attributes,
};
Svg.#applyOptions(element, { ...options, attributes: defaultAttributes });
return element;
}
/**
* Create a path from raw path data
* @param {string} pathData - SVG path data string
* @param {SvgOptions} [options={}]
* @returns {SVGPathElement}
*/
static pathData(pathData, options = {}) {
const element = document.createElementNS("http://www.w3.org/2000/svg", "path");
const defaultAttributes = {
d: pathData,
fill: "none",
stroke: "#000",
"stroke-linecap": "round",
"stroke-linejoin": "round",
"stroke-width": 0.001,
...options.attributes,
};
Svg.#applyOptions(element, { ...options, attributes: defaultAttributes });
return element;
}
/**
* Create a polygon from points array
* @param {Array<[number, number]>} points - Array of [x,y] points
* @param {SvgOptions} [options={}]
* @returns {SVGPolygonElement}
*/
static polygonPoints(points, options = {}) {
const element = document.createElementNS("http://www.w3.org/2000/svg", "polygon");
const pointsString = points.map(([x, y]) => `${x},${y}`).join(" ");
const defaultAttributes = {
fill: "rgba(100,150,255,0.2)",
points: pointsString,
stroke: "#555",
"stroke-width": 0.001,
...options.attributes,
};
Svg.#applyOptions(element, { ...options, attributes: defaultAttributes });
return element;
}
/**
* Apply options to SVG element
* @param {SVGElement} element
* @param {SvgOptions} options
*/
static #applyOptions(element, options = {}) {
const { attributes = {}, styles = {}, id = "", classes = [], children = [] } = options;
// Set attributes
for (const [key, value] of Object.entries(attributes)) {
if (value != null) {
element.setAttribute(key, value.toString());
}
}
// Set styles
for (const [property, value] of Object.entries(styles)) {
if (value != null) {
element.style[property] = value;
}
}
// Set ID and classes
if (id) element.id = id;
if (classes.length > 0) {
element.classList.add(...classes.filter(Boolean));
}
for (const child of children) {
if (child) {
element.appendChild(child);
}
}
}
/**
* Clear all children from an element
* @param {SVGElement} element
*/
static clear(element) {
while (element.firstChild) {
element.removeChild(element.firstChild);
}
}
}
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