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Use new GetLineToPoints function

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This commit is contained in:
Richard Davey 2020-08-18 17:05:06 +01:00
parent 1a1275958f
commit 74f24a06f3
1 changed files with 7 additions and 29 deletions
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36
src/geom/intersects/GetLineToPolygon.js
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@ -6,11 +6,7 @@
var Vector3 = require('../../math/Vector3');
var Vector4 = require('../../math/Vector4');
var GetLineToLine = require('./GetLineToLine');
var Line = require('../line/Line');
// Temp calculation segment
var segment = new Line();
var GetLineToPoints = require('./GetLineToPoints');
// Temp vec3
var tempIntersect = new Vector3();
@ -37,10 +33,7 @@ var tempIntersect = new Vector3();
*/
var GetLineToPolygon = function (line, polygons, out)
{
if (out === undefined)
{
out = new Vector4();
}
if (out === undefined) { out = new Vector4(); }
if (!Array.isArray(polygons))
{
@ -49,32 +42,17 @@ var GetLineToPolygon = function (line, polygons, out)
var closestIntersect = false;
// Reset our temporary vec4
// Reset our vec4s
out.set();
tempIntersect.set();
for (var p = 0; p < polygons.length; p++)
for (var i = 0; i < polygons.length; i++)
{
var points = polygons[p].points;
var prev = points[0];
for (var i = 1; i < points.length; i++)
if (GetLineToPoints(line, polygons[i].points, tempIntersect))
{
var current = points[i];
segment.setTo(prev.x, prev.y, current.x, current.y);
prev = current;
if (!GetLineToLine(line, segment, tempIntersect))
{
// No intersection? Carry on ...
continue;
}
if (!closestIntersect || tempIntersect.z < out.z)
{
out.set(tempIntersect.x, tempIntersect.y, tempIntersect.z, p);
out.set(tempIntersect.x, tempIntersect.y, tempIntersect.z, i);
closestIntersect = true;
}