public override bool testIntersection()
{
if (mLocked)
{
return(true);
}
mXaxisSelected = mYaxisSelected = mZaxisSelected = false;
//cast a ray
//find what axis it's hitting..
Point cursorPos = new Point();
UIManager.GetCursorPos(ref cursorPos);
Vector3 orig = BRenderDevice.getRayPosFromMouseCoords(false, cursorPos);
Vector3 dir = BRenderDevice.getRayPosFromMouseCoords(true, cursorPos) - orig;
dir = BMathLib.Normalize(dir);
//test intersection against our entire widget first
BBoundingBox myBox = new BBoundingBox();
myBox.min = mTranslation - (new Vector3(mRodWidth, mRodWidth, mRodWidth) * mVisibleScale.Y);
myBox.max = mTranslation + (new Vector3(mRodLength + 0.5f, mRodLength + 0.5f, mRodLength + 0.5f) * mVisibleScale.Y);
if (!myBox.intersect(orig, dir))
{
return(false);
}
//if we didn't hit a plane, check our boxes
if (!testPlanesIntersection(orig, dir))
{
testRodsIntersection(orig, dir);
}
return(mXaxisSelected | mYaxisSelected | mZaxisSelected);
}
public override bool testIntersection()
{
if (mLocked)
{
return(true);
}
mXaxisSelected = mYaxisSelected = mZaxisSelected = false;
//find what axis it's hitting..
Point cursorPos = new Point();
UIManager.GetCursorPos(ref cursorPos);
Vector3 orig = BRenderDevice.getRayPosFromMouseCoords(false, cursorPos);
Vector3 dir = BRenderDevice.getRayPosFromMouseCoords(true, cursorPos) - orig;
dir = BMathLib.Normalize(dir);
//test intersection against our entire widget first
float tVal = 0;
if (!BMathLib.raySphereIntersect(mTranslation, mVisibleScale.Y, orig, dir, ref tVal))
{
return(false);
}
//we hit the sphere. Find out what axis we're interested in
Vector3 pt = orig + (dir * tVal);
Plane xPlane = Plane.FromPoints(mTranslation, mTranslation + new Vector3(0, 1, 0), mTranslation + new Vector3(0, 0, 1));
Plane yPlane = Plane.FromPoints(mTranslation, mTranslation + new Vector3(1, 0, 0), mTranslation + new Vector3(0, 0, 1));
Plane zPlane = Plane.FromPoints(mTranslation, mTranslation + new Vector3(1, 0, 0), mTranslation + new Vector3(0, 1, 0));
float tol = 0.35f * mVisibleScale.Y;
float yDist = Math.Abs(BMathLib.pointPlaneDistance(pt, yPlane)); // < tol;
float xDist = Math.Abs(BMathLib.pointPlaneDistance(pt, xPlane)); // < tol;
float zDist = Math.Abs(BMathLib.pointPlaneDistance(pt, zPlane)); // < tol;
mXaxisSelected = mYaxisSelected = mZaxisSelected = false;
if (xDist < yDist && xDist < zDist)
{
mXaxisSelected = xDist < tol;
}
else if (yDist < xDist && yDist < zDist)
{
mYaxisSelected = yDist < tol;
}
else if (zDist < xDist && zDist < yDist)
{
mZaxisSelected = zDist < tol;
}
if (mYaxisSelected)
{
mXaxisSelected = mZaxisSelected = false;
}
if (mZaxisSelected)
{
mYaxisSelected = mXaxisSelected = false;
}
if (mXaxisSelected)
{
mYaxisSelected = mZaxisSelected = false;
}
return(mXaxisSelected | mYaxisSelected | mZaxisSelected);
}