Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2284x 2284x 2284x 2284x 2284x 2284x 2284x 2284x 2284x 2284x 2284x 2284x 2284x 2284x 2284x 1x 1x 17x 17x 17x 17x 17x 1x 1x 19136x 19136x 1x 1x 4471x 4471x 4471x 4471x 4471x 4471x 5x 5x 5x 4471x 4471x 4471x 4346x 4346x 4346x 4346x 4346x 4346x 1x | /*----------------------------------------------------------------------+
| Title: LineSlider.ts |
| A port of the software Geometry Applet by |
| Author: David E. Joyce |
| Department of Mathematics and Computer Science |
| Clark University |
| Worcester, MA 01610-1477 |
| U.S.A. |
| |
| http://aleph0.clarku.edu/~djoyce/home.html |
| djoyce@clarku.edu |
| |
| Date: February, 1996. Version 2.0.0 May, 1997. |
| TypeScript Port: 2019, Nelson Brown, brownnrl@gmail.com |
| https://www.nelsonbrown.net/ |
+----------------------------------------------------------------------*/
import {PointElement} from "./PointElement";
export class LineSlider extends PointElement {
_A : PointElement;
_B : PointElement;
_initx : number;
_inity : number;
_initz : number;
_segment : boolean;
constructor(A: PointElement, B: PointElement,
x: number, y: number, z: number, segment: boolean) {
super();
this.dimension = 0;
this.draggable = true;
this._A = A;
this._B = B;
this._x = x;
this._initx = x;
this._y = y;
this._inity = y;
this._z = z;
this._initz = z;
this._segment = segment;
if(this._A.AP == this._B.AP) this._AP = this._A.AP;
}
public reset() {
this._x = this._initx;
this._y = this._inity;
this._z = this._initz;
this.toLine(this._A, this._B, this._segment);
}
public update() {
this.toLine(this._A, this._B, this._segment);
}
public drag(tox: number, toy: number): boolean {
tox -= this._A.x;
toy -= this._A.y;
let dx : number = this._B.x - this._A.x;
let dy : number = this._B.y - this._A.y;
let factor : number = (tox*dx + toy*dy)/(dx*dx + dy*dy);
if (this._segment) {
if (factor < 0.0) factor = 0.0;
else if (factor > 1.0) factor = 1.0;
}
tox = this._A.x + dx*factor;
toy = this._A.y + dy*factor;
if ((tox-this._x)*(tox-this._x) + (tox-this._y)*(tox-this._y) < 0.5) return false;
// now drag this point
this._x = tox;
this._y = toy;
this._z = this._A.z + (this._B.z-this._A.z)*factor;
return true;
}
} |