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; }