/// <summary>
/// Transform
/// </summary>
public override void TransformBy(LitMath.Matrix3 transform)
{
LitMath.Vector2 spnt = transform * this.startPoint;
LitMath.Vector2 epnt = transform * this.endPoint;
LitMath.Vector2 mpnt = transform * this.middlePoint;
_center = transform * _center;
_radius = (spnt - _center).length;
double sAngle = LitMath.Vector2.SignedAngleInRadian(
new LitMath.Vector2(1, 0),
spnt - _center);
double eAngle = LitMath.Vector2.SignedAngleInRadian(
new LitMath.Vector2(1, 0),
epnt - _center);
if (LitMath.Vector2.SignedAngle(spnt - _center, mpnt - _center) >= 0)
{
this.startAngle = sAngle;
this.endAngle = eAngle;
}
else
{
this.startAngle = eAngle;
this.endAngle = sAngle;
}
}
public Arc(LitMath.Vector2 center, double radius, double startAngle, double endAngle)
{
_center = center;
_radius = radius;
this.startAngle = startAngle;
this.endAngle = endAngle;
}
internal LitMath.Vector2 Snap(LitMath.Vector2 posInCanvas)
{
LitMath.Vector2 posInModel = _presenter.CanvasToModel(posInCanvas);
foreach (Entity entity in _presenter.currentBlock)
{
List <ObjectSnapPoint> snapPnts = entity.GetSnapPoints();
if (snapPnts == null || snapPnts.Count == 0)
{
continue;
}
foreach (ObjectSnapPoint snapPnt in snapPnts)
{
double dis = (snapPnt.position - posInModel).length;
double disInCanvas = _presenter.ModelToCanvas(dis);
if (disInCanvas <= _threshold)
{
_currObjectSnapPoint = snapPnt;
return(snapPnt.position);
}
}
}
_currObjectSnapPoint = null;
return(posInModel);
}
public override EventResult OnMouseDown(MouseEventArgs e)
{
switch (_step)
{
case Step.Step3_SpecifyPointCenter:
if (e.Button == MouseButtons.Left)
{
_center = this.pointer.currentSnapPoint;
_step = Step.Step4_SpecifyPointOther;
}
break;
case Step.Step4_SpecifyPointOther:
if (e.Button == MouseButtons.Left)
{
_point = this.pointer.currentSnapPoint;
this.UpdatePolygon();
_mgr.FinishCurrentCommand();
}
break;
}
return(EventResult.Handled);
}
public override EventResult OnMouseMove(MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
return(EventResult.Unhandled);
}
if (_step == Step.Step1_SelectObjects)
{
}
else if (_step == Step.Step2_SpecifyBasePoint)
{
}
else if (_step == Step.Step3_SpecifySecondPoint)
{
LitMath.Vector2 preTranslation = this.translation;
_pathLine.endPoint = this.pointer.currentSnapPoint;
LitMath.Vector2 offset = this.translation - preTranslation;
foreach (Entity copy in _copys)
{
copy.Translate(offset);
}
}
return(EventResult.Handled);
}
public static void DrawRectangle(
Graphics g, IntPtr pen,
LitMath.Vector2 pnt1, LitMath.Vector2 pnt2)
{
// Extract the Win32 HDC from the Graphics object supplied.
IntPtr hdc = g.GetHdc();
//
SetBkMode(hdc, TRANSPARENT);
// Set the ROP cdrawint mode to XOR.
SetROP2(hdc, R2_XORPEN);
// Select the pen into the device context.
IntPtr oldPen = SelectObject(hdc, pen);
// Create a stock NULL_BRUSH brush and select it into the device
// context so that the rectangle isn't filled.
IntPtr oldBrush = SelectObject(hdc, GetStockObject(NULL_BRUSH));
// Now XOR the hollow rectangle on the Graphics object with
// a dotted outline.
Rectangle(hdc, (int)pnt1.x, (int)pnt1.y, (int)pnt2.x, (int)pnt2.y);
// Put the old stuff back where it was.
SelectObject(hdc, oldBrush); // no need to delete a stock object
SelectObject(hdc, oldPen);
// Return the device context to Windows.
g.ReleaseHdc(hdc);
}
internal static bool BoundingIntersectWithRay(Bounding bounding, Ray ray)
{
if (!ray.bounding.IntersectWith(bounding))
{
return(false);
}
LitMath.Vector2 pkPnt1 = new LitMath.Vector2(bounding.left, bounding.bottom);
LitMath.Vector2 pkPnt2 = new LitMath.Vector2(bounding.left, bounding.top);
LitMath.Vector2 pkPnt3 = new LitMath.Vector2(bounding.right, bounding.top);
LitMath.Vector2 pkPnt4 = new LitMath.Vector2(bounding.right, bounding.bottom);
double d1 = LitMath.Vector2.Cross(pkPnt1 - ray.basePoint, ray.direction);
double d2 = LitMath.Vector2.Cross(pkPnt2 - ray.basePoint, ray.direction);
double d3 = LitMath.Vector2.Cross(pkPnt3 - ray.basePoint, ray.direction);
double d4 = LitMath.Vector2.Cross(pkPnt4 - ray.basePoint, ray.direction);
if (d1 * d2 <= 0 || d1 * d3 <= 0 || d1 * d4 <= 0)
{
return(true);
}
else
{
return(false);
}
}
internal static bool BoundingIntersectWithLine(Bounding bounding, LitMath.Line2 line)
{
Bounding lineBound = new Bounding(line.startPoint, line.endPoint);
if (!bounding.IntersectWith(lineBound))
{
return(false);
}
if (bounding.Contains(line.startPoint) ||
bounding.Contains(line.endPoint))
{
return(true);
}
LitMath.Vector2 pkPnt1 = new LitMath.Vector2(bounding.left, bounding.bottom);
LitMath.Vector2 pkPnt2 = new LitMath.Vector2(bounding.left, bounding.top);
LitMath.Vector2 pkPnt3 = new LitMath.Vector2(bounding.right, bounding.top);
LitMath.Vector2 pkPnt4 = new LitMath.Vector2(bounding.right, bounding.bottom);
double d1 = LitMath.Vector2.Cross(line.startPoint - pkPnt1, line.endPoint - pkPnt1);
double d2 = LitMath.Vector2.Cross(line.startPoint - pkPnt2, line.endPoint - pkPnt2);
double d3 = LitMath.Vector2.Cross(line.startPoint - pkPnt3, line.endPoint - pkPnt3);
double d4 = LitMath.Vector2.Cross(line.startPoint - pkPnt4, line.endPoint - pkPnt4);
if (d1 * d2 <= 0 || d1 * d3 <= 0 || d1 * d4 <= 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 完成
/// </summary>
public override void Finish()
{
_resultGripPos = _mousePosInWorld;
_entity.SetGripPointAt(_index, _gripPoint, _resultGripPos);
pointer.UpdateGripPoints();
base.Finish();
}
/// <summary>
/// 设置夹点
/// </summary>
public override void SetGripPointAt(int index, GripPoint gripPoint, LitMath.Vector2 newPosition)
{
switch (gripPoint.type)
{
case GripPointType.End:
{
this.SetPointAt(index, newPosition);
}
break;
case GripPointType.Mid:
{
int numOfVertices = NumberOfVertices;
int i = index - numOfVertices;
if (i >= 0 && i <= numOfVertices - 1)
{
int vIndex1st = i;
int vIndex2nd = i + 1;
if (vIndex2nd == numOfVertices)
{
vIndex2nd = 0;
}
LitMath.Vector2 t = newPosition - gripPoint.position;
this.SetPointAt(vIndex1st, (LitMath.Vector2)gripPoint.xData1 + t);
this.SetPointAt(vIndex2nd, (LitMath.Vector2)gripPoint.xData2 + t);
}
}
break;
default:
break;
}
}
public override bool Read(string name, out LitMath.Vector2 value)
{
value = new LitMath.Vector2(0, 0);
XmlNode node = _curXmlNode.SelectSingleNode(name);
if (node == null)
{
return(false);
}
string strValue = node.InnerText;
string[] xy = strValue.Split(';');
if (xy.Length != 2)
{
return(false);
}
double x = 0;
if (!double.TryParse(xy[0], out x))
{
return(false);
}
double y = 0;
if (!double.TryParse(xy[1], out y))
{
return(false);
}
value.Set(x, y);
return(true);
}
/// <summary>
/// Transform
/// </summary>
public override void TransformBy(LitMath.Matrix3 transform)
{
LitMath.Vector2 refPnt = _basePoint + _direction;
_basePoint = transform * _basePoint;
refPnt = transform * refPnt;
_direction = (refPnt - _basePoint).normalized;
}
/// <summary>
/// Transform
/// </summary>
public override void TransformBy(LitMath.Matrix3 transform)
{
LitMath.Vector2 pnt = _center + new LitMath.Vector2(_radius, 0);
_center = transform * _center;
_radius = (transform * pnt - _center).length;
}
public override EventResult OnMouseDown(MouseEventArgs e)
{
switch (_step)
{
case Step.Step1_SpecifyPoint1st:
if (e.Button == MouseButtons.Left)
{
_point1st = this.pointer.currentSnapPoint;
_step = Step.Step2_SpecifyPoint2nd;
}
break;
case Step.Step2_SpecifyPoint2nd:
if (e.Button == MouseButtons.Left)
{
_point2nd = this.pointer.currentSnapPoint;
this.UpdateRectangle();
_mgr.FinishCurrentCommand();
}
break;
}
return(EventResult.Handled);
}
/// <summary>
/// 设置夹点
/// </summary>
public override void SetGripPointAt(int index, GripPoint gripPoint, LitMath.Vector2 newPosition)
{
if (index == 0)
{
_position = newPosition;
}
}
private void UpdateReservedBounding()
{
LitMath.Vector2 centerInModel = _presenter.CanvasToModel(_center);
double sideInModel = _presenter.CanvasToModel(_side);
_reservedBounding = new Bounding(centerInModel, sideInModel, sideInModel);
}
internal LitMath.Vector2 Snap(LitMath.Vector2 posInCanvas)
{
LitMath.Vector2 posInModel = _presenter.CanvasToModel(posInCanvas);
foreach (KeyValuePair <ObjectId, List <GripPoint> > kvp in _gripPnts)
{
int index = -1;
foreach (GripPoint gripPnt in kvp.Value)
{
++index;
double width = 10;
double height = 10;
LitMath.Vector2 gripPosInCanvas = _presenter.ModelToCanvas(gripPnt.position);
gripPosInCanvas.x -= width / 2;
gripPosInCanvas.y -= height / 2;
LitMath.Rectangle2 rect = new LitMath.Rectangle2(gripPosInCanvas, width, height);
if (MathUtils.IsPointInRectangle(posInCanvas, rect))
{
_currGripPoint = gripPnt;
_currGripEntityId = kvp.Key;
_currGripPointIndex = index;
return(gripPnt.position);
}
}
}
_currGripPoint = null;
_currGripEntityId = ObjectId.Null;
_currGripPointIndex = -1;
return(posInModel);
}
static void Main(string[] args)
{
//LitMath.Vector2 v = new LitMath.Vector2(0.7, 0.7);
//v = LitMath.Vector2.RotateInRadian(v, LitMath.Utils.PI / 2);
//Console.WriteLine(v.ToString());
//Console.WriteLine(Math.Asin(0.5).ToString());
{
LitMath.Vector3 va = new LitMath.Vector3(0, 0, 1);
LitMath.Vector3 vb = new LitMath.Vector3(0, 1, 0);
LitMath.Vector3 axis = new LitMath.Vector3(1, 1, 0);
double angle = LitMath.Vector3.SignedAngle(va, vb, axis);
Console.WriteLine(angle);
}
{
LitMath.Vector3 va = new LitMath.Vector3(0, 0, 1);
LitMath.Vector3 vb = new LitMath.Vector3(0, 0, 1);
LitMath.Vector3 axis = new LitMath.Vector3(1, 1, 0);
double angle = LitMath.Vector3.SignedAngle(va, vb, axis);
Console.WriteLine(angle);
}
{
LitMath.Vector3 va = new LitMath.Vector3(0, 0, 1);
LitMath.Vector3 vb = new LitMath.Vector3(0, 1, 0);
LitMath.Vector3 axis = new LitMath.Vector3(0, 1, 1);
double angle = LitMath.Vector3.SignedAngle(va, vb, axis);
Console.WriteLine(angle);
}
return;
//LitMath.Vector2 v1 = new LitMath.Vector2(1, 3);
//Console.WriteLine(v1.ToString());
LitMath.Line2 line1 = new LitMath.Line2(
new LitMath.Vector2(0, 0),
new LitMath.Vector2(10, 0));
line1.startPoint.x = 10;
LitMath.Line2 line2 = new LitMath.Line2(
new LitMath.Vector2(5, 0),
new LitMath.Vector2(5, 10));
LitMath.Vector2 intersection = new LitMath.Vector2();
if (LitMath.Line2.Intersect(line1, line2, ref intersection))
{
Console.WriteLine("相交: " + intersection.ToString());
}
LitMath.Rectangle2 rect = new LitMath.Rectangle2(new LitMath.Vector2(10, 10), 10, 20);
Console.WriteLine(rect.ToString());
Console.WriteLine(rect.leftBottom.ToString());
Console.WriteLine(rect.leftTop.ToString());
Console.WriteLine(rect.rightTop.ToString());
Console.WriteLine(rect.rightBottom.ToString());
LitMath.Circle2 circle = new LitMath.Circle2(new LitMath.Vector2(25, 25), 10);
Console.WriteLine(circle.ToString());
Console.WriteLine(circle.diameter.ToString());
}
public override bool Do(double value, LitMath.Vector2 refPoint)
{
if (_arc == null ||
_result == null)
{
return(false);
}
double dis = (_arc.center - refPoint).length;
if (dis > _arc.radius)
{
_result.radius = _arc.radius + Math.Abs(value);
}
else
{
if (_arc.radius <= Math.Abs(value))
{
_result.radius = _arc.radius;
return(false);
}
else
{
_result.radius = _arc.radius - Math.Abs(value);
}
}
return(true);
}
/// <summary>
/// 平移
/// </summary>
public override void Translate(LitMath.Vector2 translation)
{
for (int i = 0; i < this.NumberOfVertices; ++i)
{
_vertices[i] += translation;
}
}
public override EventResult OnMouseMove(MouseEventArgs e)
{
switch (_step)
{
case Step.Step1_SelectObjects:
break;
case Step.Step2_SpecifyBasePoint:
break;
case Step.Step3_SpecifySecondPoint:
LitMath.Vector2 preTranslation = this.translation;
_pathLine.endPoint = this.pointer.currentSnapPoint;
LitMath.Vector2 offset = this.translation - preTranslation;
foreach (Entity tempEntity in _tempItemsToDraw)
{
tempEntity.Translate(offset);
}
break;
default:
break;
}
return(EventResult.Handled);
}
/// <summary>
/// Constructor
/// </summary>
public Bounding(LitMath.Vector2 point1, LitMath.Vector2 point2)
{
if (point1.x < point2.x)
{
_left = point1.x;
_right = point2.x;
}
else
{
_left = point2.x;
_right = point1.x;
}
if (point1.y < point2.y)
{
_bottom = point1.y;
_top = point2.y;
}
else
{
_bottom = point2.y;
_top = point1.y;
}
_width = _right - _left;
_height = _top - _bottom;
}
internal void OnPaint(Graphics graphics)
{
LitMath.Vector2 originInCanvas = _presenter.ModelToCanvas(_origin);
graphics.DrawImage(_bitmap,
(float)originInCanvas.x - _offsetX, (float)originInCanvas.y - _bitmap.Height + _offsetY,
new RectangleF(0, 0, _bitmap.Width, _bitmap.Height),
GraphicsUnit.Pixel);
}
/// <summary>
/// 设置夹点
/// </summary>
public override void SetGripPointAt(int index, GripPoint gripPoint, LitMath.Vector2 newPosition)
{
if (index == 0)
{
_center = newPosition;
}
else if (index >= 1 && index <= 3)
{
LitMath.Vector2 startPoint = this.startPoint;
LitMath.Vector2 endPoint = this.endPoint;
LitMath.Vector2 middlePoint = this.middlePoint;
if (index == 1)
{
startPoint = newPosition;
middlePoint = (LitMath.Vector2)gripPoint.xData1;
}
else if (index == 2)
{
endPoint = newPosition;
middlePoint = (LitMath.Vector2)gripPoint.xData1;
}
else if (index == 3)
{
middlePoint = newPosition;
}
LitMath.Circle2 newCircle = LitMath.Circle2.From3Points(
startPoint, middlePoint, endPoint);
if (newCircle.radius > 0)
{
LitMath.Vector2 xPositive = new LitMath.Vector2(1, 0);
double startAngle = LitMath.Vector2.SignedAngleInRadian(xPositive,
startPoint - newCircle.center);
double endAngle = LitMath.Vector2.SignedAngleInRadian(xPositive,
endPoint - newCircle.center);
double middleAngle = LitMath.Vector2.SignedAngleInRadian(xPositive,
middlePoint - newCircle.center);
startAngle = MathUtils.NormalizeRadianAngle(startAngle);
endAngle = MathUtils.NormalizeRadianAngle(endAngle);
middleAngle = MathUtils.NormalizeRadianAngle(middleAngle);
_center = newCircle.center;
_radius = newCircle.radius;
if (AngleInArcRange(middleAngle, startAngle, endAngle))
{
this.startAngle = startAngle;
this.endAngle = endAngle;
}
else
{
this.startAngle = endAngle;
this.endAngle = startAngle;
}
}
}
}
public Bounding(LitMath.Vector2 center, double width, double height)
{
_left = center.x - width / 2.0;
_right = center.x + width / 2.0;
_bottom = center.y - height / 2.0;
_top = center.y + height / 2.0;
_width = _right - _left;
_height = _top - _bottom;
}
internal void OnPaint(Graphics graphics)
{
if (_isShowAnchor)
{
_anchorMgr.OnPaint(graphics);
}
switch (_mode)
{
case Mode.Default:
{
if (_selRect != null)
{
_selRect.OnPaint(graphics);
}
else
{
LitMath.Vector2 currSnapPointInCanvas = _presenter.ModelToCanvas(_currSnapPoint);
graphics.DrawImage(_bitmap,
(float)(currSnapPointInCanvas.x - _bitmap.Width / 2),
(float)(currSnapPointInCanvas.y - _bitmap.Height / 2));
}
}
break;
case Mode.Select:
if (_selRect != null)
{
_selRect.OnPaint(graphics);
}
else
{
graphics.DrawImage(_bitmap,
(float)(_pos.x - _bitmap.Width / 2),
(float)(_pos.y - _bitmap.Height / 2));
}
break;
case Mode.Locate:
{
LitMath.Vector2 currSnapPointInCanvas = _presenter.ModelToCanvas(_currSnapPoint);
graphics.DrawImage(_bitmap,
(float)(currSnapPointInCanvas.x - _bitmap.Width / 2),
(float)(currSnapPointInCanvas.y - _bitmap.Height / 2));
_presenter.canvasDraw.graphics = graphics;
_snapNodesMgr.OnPaint(_presenter.canvasDraw);
}
break;
case Mode.Drag:
break;
default:
break;
}
}
/// <summary>
/// Transform
/// </summary>
public override void TransformBy(LitMath.Matrix3 transform)
{
LitMath.Vector2 pntX = _center + new LitMath.Vector2(_radiusX, 0);
LitMath.Vector2 pntY = _center + new LitMath.Vector2(0, _radiusY);
_center = transform * _center;
_radiusX = (transform * pntX - _center).length;
_radiusY = (transform * pntY - _center).length;
}
public override EventResult OnMouseDown(MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
_mousePosInWorld = this.pointer.currentSnapPoint;
_mgr.FinishCurrentCommand();
}
return(EventResult.Handled);
}
/// <summary>
/// 设置夹点
/// </summary>
public override void SetGripPointAt(int index, GripPoint gripPoint, LitMath.Vector2 newPosition)
{
if (index == 0)
{
_startPoint = newPosition;
}
else if (index == 1)
{
_endPoint = newPosition;
}
}
/// <summary>
/// 设置夹点
/// </summary>
public override void SetGripPointAt(int index, GripPoint gripPoint, LitMath.Vector2 newPosition)
{
if (index == 0)
{
_center = newPosition;
}
else if (index >= 1 && index <= 4)
{
_radius = (newPosition - _center).length;
}
}