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Diffstat (limited to 'frontend/_shared/math/collision.js')
-rw-r--r-- | frontend/_shared/math/collision.js | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/frontend/_shared/math/collision.js b/frontend/_shared/math/collision.js new file mode 100644 index 0000000..74ec5d8 --- /dev/null +++ b/frontend/_shared/math/collision.js @@ -0,0 +1,23 @@ +/// <reference path="vec2.js" /> +/// <reference path="line2.js" /> +/// <reference path="circle.js" /> +/// <reference path="mat4.js" /> + +/** + * + * @param {circle} pCricle + * @param {line2} pLine + */ +function lineCircleCollision2(pCricle, pLine) { + // We have a triangle formed by circle's position P and the two points of the line, A and B. + var lSlope = (pCricle.position.y - pLine.start.y) / (pCricle.position.x - pLine.start.x), + lAngle = Math.atan(lSlope), + lAngleDiff = lAngle - pLine.angle, + lPositionToStart = subVec2(pCricle.position, pLine.start), + lPosToStartLength = length2(lPositionToStart), + lHeight = lPosToStartLength * Math.sin(lAngleDiff); + + if (Math.abs(lHeight - pCricle.radius) < pCricle.radius) { + console.log('Intersection'); + } +}
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