public override bool Pick(ViewControl vc, Point scrPt)
{
m_hitRegion = HitRegion.None;
if (base.Pick(vc, scrPt) == false)
return false;
Camera camera = vc.Camera;
Matrix4F view = camera.ViewMatrix;
Matrix4F vp = view * camera.ProjectionMatrix;
Matrix4F wvp = HitMatrix * vp;
Ray3F rayL = vc.GetRay(scrPt,wvp);
float s = Util.CalcAxisScale(vc.Camera, HitMatrix.Translation, AxisLength, vc.Height);
// There's only one hot-spot for this manipulator:
// a square at the manipulator origin.
Vec3F min = new Vec3F(-0.5f, -0.5f, -0.5f);
Vec3F max = new Vec3F(0.5f, 0.5f, 0.5f);
AABB box = new AABB(min, max);
float centerCubeScale = s * CenterCubeSize;
Matrix4F centerCubeXform = new Matrix4F();
centerCubeXform.Scale(centerCubeScale);
centerCubeXform.Invert(centerCubeXform);
Ray3F ray = rayL;
ray.Transform(centerCubeXform);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.XYSquare;
return true;
}
m_hitRegion = HitRegion.None;
return false;
}
public override bool Pick(ViewControl vc, Point scrPt)
{
m_hitRegion = HitRegion.None;
if (base.Pick(vc, scrPt) == false)
return false;
Camera camera = vc.Camera;
float s = Util.CalcAxisScale(vc.Camera, HitMatrix.Translation, AxisLength, vc.Height);
Matrix4F vp = camera.ViewMatrix * camera.ProjectionMatrix;
Matrix4F wvp = HitMatrix * vp;
// get ray in object space space.
Ray3F rayL = vc.GetRay(scrPt, wvp);
m_scale = new Vec3F(1, 1, 1);
m_hitScale = s;
Vec3F min = new Vec3F(-0.5f, -0.5f, -0.5f);
Vec3F max = new Vec3F(0.5f, 0.5f, 0.5f);
AABB box = new AABB(min, max);
Matrix4F boxScale = new Matrix4F();
Matrix4F boxTrans = new Matrix4F();
Matrix4F BoxMtrx = new Matrix4F();
float handleScale = s * AxisHandle;
// +X axis
boxScale.Scale(new Vec3F(s, handleScale, handleScale));
boxTrans.Translation = new Vec3F(s / 2, 0, 0);
BoxMtrx = boxScale * boxTrans;
Ray3F ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.XAxis;
return true;
}
// -X
boxTrans.Translation = new Vec3F(-s / 2, 0, 0);
BoxMtrx = boxScale * boxTrans;
ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.NegXAxis;
return true;
}
// y axis
boxScale.Scale(new Vec3F(handleScale, s, handleScale));
boxTrans.Translation = new Vec3F(0, s / 2, 0);
BoxMtrx = boxScale * boxTrans;
ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.YAxis;
return true;
}
// -Y
boxTrans.Translation = new Vec3F(0, -s / 2, 0);
BoxMtrx = boxScale * boxTrans;
ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.NegYAxis;
return true;
}
// z axis
boxScale.Scale(new Vec3F(handleScale, handleScale, s));
boxTrans.Translation = new Vec3F(0, 0, s / 2);
BoxMtrx = boxScale * boxTrans;
ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.ZAxis;
return true;
}
// -Z
boxTrans.Translation = new Vec3F(0, 0, -s / 2);
BoxMtrx = boxScale * boxTrans;
ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.NegZAxis;
return true;
}
return false;
}
public HitRegion Pick(Matrix4F world, Matrix4F view, Ray3F rayL, Ray3F rayV, float s)
{
m_hitRegion = HitRegion.None;
m_hitRayV = rayV;
m_hitMatrix.Set(world);
m_hitWorldView = world * view;
float sl = s * SquareLength;
// test xy square.
Vec3F p1 = new Vec3F(0, 0, 0);
Vec3F p2 = new Vec3F(sl, 0, 0);
Vec3F p3 = new Vec3F(sl, sl, 0);
Vec3F p4 = new Vec3F(0, sl, 0);
Plane3F plane = new Plane3F(p1, p2, p3);
Vec3F p;
if (rayL.IntersectPlane(plane, out p))
{
// test point in 2d rectangle.
if (p.X > p1.X && p.X < p2.X
&& p.Y > p1.Y && p.Y < p4.Y)
{
m_hitRegion = HitRegion.XYSquare;
return m_hitRegion;
}
}
// test xz square
p1 = new Vec3F(0, 0, 0);
p2 = new Vec3F(sl, 0, 0);
p3 = new Vec3F(sl, 0, sl);
p4 = new Vec3F(0, 0, sl);
plane = new Plane3F(p1, p2, p3);
if (rayL.IntersectPlane(plane, out p))
{
// test point in 2d rectangle.
if (p.X > p1.X && p.X < p2.X
&& p.Z > p1.Z && p.Z < p4.Z)
{
m_hitRegion = HitRegion.XZSquare;
return m_hitRegion;
}
}
// test yz square
p1 = new Vec3F(0, 0, 0);
p2 = new Vec3F(0, 0, sl);
p3 = new Vec3F(0, sl, sl);
p4 = new Vec3F(0, sl, 0);
plane = new Plane3F(p1, p2, p3);
if (rayL.IntersectPlane(plane, out p))
{
// test point in 2d rectangle.
if (p.Z > p1.Z && p.Z < p2.Z
&& p.Y > p1.Z && p.Y < p4.Y)
{
m_hitRegion = HitRegion.YZSquare;
return m_hitRegion;
}
}
Vec3F min = new Vec3F(-0.5f, -0.5f, -0.5f);
Vec3F max = new Vec3F(0.5f, 0.5f, 0.5f);
AABB box = new AABB(min, max);
Matrix4F boxScale = new Matrix4F();
Matrix4F boxTrans = new Matrix4F();
Matrix4F BoxMtrx = new Matrix4F();
// X axis
boxScale.Scale(new Vec3F(s, s * br, s * br));
boxTrans.Translation = new Vec3F(s / 2, 0, 0);
BoxMtrx = boxScale * boxTrans;
Ray3F ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.XAxis;
return m_hitRegion;
}
// y axis
boxScale.Scale(new Vec3F(s * br, s, s * br));
boxTrans.Translation = new Vec3F(0, s / 2, 0);
BoxMtrx = boxScale * boxTrans;
ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.YAxis;
return m_hitRegion;
}
// z axis
boxScale.Scale(new Vec3F(s * br, s * br, s));
boxTrans.Translation = new Vec3F(0, 0, s / 2);
BoxMtrx = boxScale * boxTrans;
ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.ZAxis;
}
return m_hitRegion;
}
public override bool Pick(ViewControl vc, Point scrPt)
{
m_hitRegion = HitRegion.None;
if (base.Pick(vc, scrPt) == false)
return false;
Camera camera = vc.Camera;
float s;
Util.CalcAxisLengths(camera, HitMatrix.Translation, out s);
Matrix4F vp = camera.ViewMatrix * camera.ProjectionMatrix;
Matrix4F wvp = HitMatrix * vp;
// get ray in object space space.
Ray3F rayL = vc.GetRay(scrPt, wvp);
m_scale = new Vec3F(1, 1, 1);
m_hitScale = s;
float rectScale = s*FreeRectRatio;
Vec3F topRight = rectScale * (new Vec3F(1, 1, 0));
Vec3F topLeft = rectScale * (new Vec3F(-1, 1, 0));
Vec3F bottomLeft = rectScale * (new Vec3F(-1, -1, 0));
Vec3F bottomRight = rectScale * (new Vec3F(1, -1, 0));
Matrix4F planeXform = Util.CreateBillboard(HitMatrix.Translation, camera.WorldEye, camera.Up, camera.LookAt);
Matrix4F wvpPlane = planeXform * vp;
// create ray in plane's local space.
Ray3F rayP = vc.GetRay(scrPt, wvpPlane);
Plane3F plane = new Plane3F(topRight,topLeft,bottomLeft);
Vec3F p;
bool intersect = rayP.IntersectPlane(plane, out p);
if(intersect)
{
bool inside = p.X > topLeft.X
&& p.X < topRight.X
&& p.Y > bottomLeft.Y
&& p.Y < topLeft.Y;
if (inside)
{
m_hitRegion = HitRegion.FreeRect;
return true;
}
}
Vec3F min = new Vec3F(-0.5f, -0.5f, -0.5f);
Vec3F max = new Vec3F(0.5f, 0.5f, 0.5f);
AABB box = new AABB(min, max);
Matrix4F boxScale = new Matrix4F();
Matrix4F boxTrans = new Matrix4F();
Matrix4F BoxMtrx = new Matrix4F();
float handleScale = s * HandleRatio;
// X axis
boxScale.Scale(new Vec3F(s, handleScale, handleScale));
boxTrans.Translation = new Vec3F(s / 2, 0, 0);
BoxMtrx = boxScale * boxTrans;
Ray3F ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.XAxis;
return true;
}
// y axis
boxScale.Scale(new Vec3F(handleScale, s, handleScale));
boxTrans.Translation = new Vec3F(0, s / 2, 0);
BoxMtrx = boxScale * boxTrans;
ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.YAxis;
return true;
}
// z axis
boxScale.Scale(new Vec3F(handleScale, handleScale, s));
boxTrans.Translation = new Vec3F(0, 0, s / 2);
BoxMtrx = boxScale * boxTrans;
ray = rayL;
BoxMtrx.Invert(BoxMtrx);
ray.Transform(BoxMtrx);
if (box.Intersect(ray))
{
m_hitRegion = HitRegion.ZAxis;
return true;
}
return false;
}