You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
30 lines
1.0 KiB
JavaScript
30 lines
1.0 KiB
JavaScript
import barycentricCoordinates from "./barycentricCoordinates.js";
|
|
import Cartesian3 from "./Cartesian3.js";
|
|
|
|
var coords = new Cartesian3();
|
|
|
|
/**
|
|
* Determines if a point is inside a triangle.
|
|
*
|
|
* @function pointInsideTriangle
|
|
*
|
|
* @param {Cartesian2|Cartesian3} point The point to test.
|
|
* @param {Cartesian2|Cartesian3} p0 The first point of the triangle.
|
|
* @param {Cartesian2|Cartesian3} p1 The second point of the triangle.
|
|
* @param {Cartesian2|Cartesian3} p2 The third point of the triangle.
|
|
* @returns {Boolean} <code>true</code> if the point is inside the triangle; otherwise, <code>false</code>.
|
|
*
|
|
* @example
|
|
* // Returns true
|
|
* var p = new Cesium.Cartesian2(0.25, 0.25);
|
|
* var b = Cesium.pointInsideTriangle(p,
|
|
* new Cesium.Cartesian2(0.0, 0.0),
|
|
* new Cesium.Cartesian2(1.0, 0.0),
|
|
* new Cesium.Cartesian2(0.0, 1.0));
|
|
*/
|
|
function pointInsideTriangle(point, p0, p1, p2) {
|
|
barycentricCoordinates(point, p0, p1, p2, coords);
|
|
return coords.x > 0.0 && coords.y > 0.0 && coords.z > 0;
|
|
}
|
|
export default pointInsideTriangle;
|