js-draw
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Draw pictures using a pen, touchscreen, or mouse! JS-draw is a drawing library for JavaScript and TypeScript.
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JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.makeOutlinedRectangleBuilder = exports.makeFilledRectangleBuilder = void 0;
const math_1 = require("@js-draw/math");
const RenderablePathSpec_1 = require("../../rendering/RenderablePathSpec");
const Stroke_1 = __importDefault(require("../Stroke"));
const makeSnapToGridAutocorrect_1 = __importDefault(require("./autocorrect/makeSnapToGridAutocorrect"));
/**
* Creates filled rectangles with sharp corners.
*
* Example:
* [[include:doc-pages/inline-examples/changing-pen-types.md]]
*/
exports.makeFilledRectangleBuilder = (0, makeSnapToGridAutocorrect_1.default)((initialPoint, viewport) => {
return new RectangleBuilder(initialPoint, true, viewport);
});
/**
* Creates outlined rectangles with sharp corners.
*
* Example:
* [[include:doc-pages/inline-examples/changing-pen-types.md]]
*/
exports.makeOutlinedRectangleBuilder = (0, makeSnapToGridAutocorrect_1.default)((initialPoint, viewport) => {
return new RectangleBuilder(initialPoint, false, viewport);
});
class RectangleBuilder {
constructor(startPoint, filled, viewport) {
this.startPoint = startPoint;
this.filled = filled;
this.viewport = viewport;
// Initially, the start and end points are the same.
this.endPoint = startPoint;
}
getBBox() {
const preview = this.buildPreview();
return preview.getBBox();
}
buildPreview() {
const canvasAngle = this.viewport.getRotationAngle();
const rotationMat = math_1.Mat33.zRotation(-canvasAngle);
// Adjust startPoint and endPoint such that applying [rotationMat] to them
// brings them to this.startPoint and this.endPoint.
const startPoint = rotationMat.inverse().transformVec2(this.startPoint.pos);
const endPoint = rotationMat.inverse().transformVec2(this.endPoint.pos);
const rect = math_1.Rect2.fromCorners(startPoint, endPoint);
const path = math_1.Path.fromRect(rect, this.filled ? null : this.endPoint.width)
.transformedBy(
// Rotate the canvas rectangle so that its rotation matches the screen
rotationMat)
.mapPoints((point) => this.viewport.roundPoint(point));
const preview = new Stroke_1.default([
(0, RenderablePathSpec_1.pathToRenderable)(path, {
fill: this.endPoint.color,
}),
]);
return preview;
}
build() {
return this.buildPreview();
}
preview(renderer) {
this.buildPreview().render(renderer);
}
addPoint(point) {
this.endPoint = point;
}
}
exports.default = RectangleBuilder;