/*
* カメラの Projection が Orthographic である場合（2Dカメラ）
*/
protected void UpdateTouchPos_2DCamera(Vector3 inputPos)
{
// Debug.Log("UpdateTouchPos_2DCamera----------------------" + transform+"----------------------");
//--- calc local plane coord ---
{
Vector3 worldP_LT = transform.TransformPoint(localP_LT);
Vector3 worldP_RT = transform.TransformPoint(localP_RT);
Vector3 worldP_LB = transform.TransformPoint(localP_LB);
Vector3 ScreenLT = camera.WorldToScreenPoint(worldP_LT);
Vector3 ScreenRT = camera.WorldToScreenPoint(worldP_RT);
Vector3 ScreenLB = camera.WorldToScreenPoint(worldP_LB);
Vector3 sVX = ScreenRT - ScreenLT;
Vector3 sVY = ScreenLB - ScreenLT;
// ScreenLTを原点としてsVX、sVYのベクトルで入力のinputPosを成分分解する。
float x = inputPos.x;
float y = inputPos.y;
float vax = sVX.x;
float vay = sVX.y;
float vbx = sVY.x;
float vby = sVY.y;
float p0x = ScreenLT.x;
float p0y = ScreenLT.y;
float f = vbx * vay - vby * vax;
float g = p0y * vax - p0x * vay - y * vax + x * vay;
if (f == 0 || vax == 0)
{
//not update value
}
else
{
float t = g / f;
float k = (x - p0x - t * vbx) / vax;
touchPos_onPlane.x = k;
touchPos_onPlane.y = t;
}
}
//--- calc touchPos on the model canvas
{
// 0..1の座標を-1..1の座標に揃える。Yは左上を原点にしているため反転。
float touchPos_plane2x2_X = touchPos_onPlane.x * 2 - 1;
float touchPos_plane2x2_Y = -touchPos_onPlane.y * 2 + 1;
L2DModelMatrix m = model.getModelMatrix();
touchPos_onModelCanvas.x = m.invertTransformX(touchPos_plane2x2_X);
touchPos_onModelCanvas.y = m.invertTransformY(touchPos_plane2x2_Y);
}
}
protected void UpdateTouchPos_2DCamera(Vector3 inputPos)
{
//--- calc local plane coord ---
{
Vector3 worldP_LT = transform.TransformPoint(localP_LT);
Vector3 worldP_RT = transform.TransformPoint(localP_RT);
Vector3 worldP_LB = transform.TransformPoint(localP_LB);
Vector3 ScreenLT = Camera.main.WorldToScreenPoint(worldP_LT);
Vector3 ScreenRT = Camera.main.WorldToScreenPoint(worldP_RT);
Vector3 ScreenLB = Camera.main.WorldToScreenPoint(worldP_LB);
Vector3 sVX = ScreenRT - ScreenLT;
Vector3 sVY = ScreenLB - ScreenLT;
float x = inputPos.x;
float y = inputPos.y;
float vax = sVX.x;
float vay = sVX.y;
float vbx = sVY.x;
float vby = sVY.y;
float p0x = ScreenLT.x;
float p0y = ScreenLT.y;
float f = vbx * vay - vby * vax;
float g = p0y * vax - p0x * vay - y * vax + x * vay;
if (f == 0 || vax == 0)
{
//not update value
}
else
{
float t = g / f;
float k = (x - p0x - t * vbx) / vax;
touchPos_onPlane.x = k;
touchPos_onPlane.y = t;
}
}
//--- calc touchPos on the model canvas
{
float touchPos_plane2x2_X = touchPos_onPlane.x * 2 - 1;
float touchPos_plane2x2_Y = -touchPos_onPlane.y * 2 + 1;
L2DModelMatrix m = model.getModelMatrix();
touchPos_onModelCanvas.x = m.invertTransformX(touchPos_plane2x2_X);
touchPos_onModelCanvas.y = m.invertTransformY(touchPos_plane2x2_Y);
}
}
/*
* カメラの Projection が Perspective である場合（3Dカメラ）
*/
protected void UpdateTouchPos_3DCamera(Vector3 inputPos)
{
Debug.Log("UpdateTouchPos_3DCamera----------------------" + transform + "----------------------");
//--- calc local plane coord ---
{
Ray ray = Camera.main.ScreenPointToRay(inputPos);
Vector3 worldP_LT = transform.TransformPoint(localP_LT);
Vector3 worldP_RT = transform.TransformPoint(localP_RT);
Vector3 worldP_LB = transform.TransformPoint(localP_LB);
Vector3 PO = worldP_LT;
Vector3 VX = worldP_RT - worldP_LT;
Vector3 VY = worldP_LB - worldP_LT;
Vector3 PL = ray.origin;
Vector3 VL = ray.direction;
float Dx = PO.x - PL.x;
float Dy = PO.y - PL.y;
float Dz = PO.z - PL.z;
float E = (VX.x * VL.y - VX.y * VL.x);
float F = (VY.x * VL.y - VY.y * VL.x);
float G = (Dx * VL.y - Dy * VL.x);
float H = (VX.x * VL.z - VX.z * VL.x);
float I = (VY.x * VL.z - VY.z * VL.x);
float J = (Dx * VL.z - Dz * VL.x);
float tmp = (F * H - E * I);
if (tmp == 0)
{
//not update value
}
else
{
touchPos_onPlane.x = (G * I - F * J) / tmp;
touchPos_onPlane.y = (E * J - G * H) / tmp;
}
}
//--- calc touchPos on the model canvas
{
float touchPos_plane2x2_X = touchPos_onPlane.x * 2 - 1;
float touchPos_plane2x2_Y = -touchPos_onPlane.y * 2 + 1;
L2DModelMatrix m = model.getModelMatrix();
touchPos_onModelCanvas.x = m.invertTransformX(touchPos_plane2x2_X);
touchPos_onModelCanvas.y = m.invertTransformY(touchPos_plane2x2_Y);
}
}
