void RemoveLine(DrawTools.Line line) { if (m_originalLines.ContainsKey(line)) { m_originalLines[line].Line.Highlighted = false; m_originalLines.Remove(line); } }
void AddLine(UnitPoint point, DrawTools.Line line) { if (m_originalLines.ContainsKey(line) == false) { line.Highlighted = true; LinePoints lp = new LinePoints(); lp.SetLine(line); lp.MousePoint = point; m_originalLines.Add(line, lp); } }
public void SetNewPoints(DrawTools.Line l, UnitPoint hitpoint, UnitPoint intersectpoint) { SetLine(l); double hitToVp1 = HitUtil.Distance(hitpoint, l.P1); // hit point to vertex point double ispToVp1 = HitUtil.Distance(intersectpoint, l.P1); // intersect point to vertex point // if hit is closer than intersect point, then keep this point and adjust the other if (hitToVp1 <= ispToVp1) { m_p2 = intersectpoint; } else { m_p1 = intersectpoint; } ResetLine(); }
/// <summary> /// 设置新的点 /// </summary> /// <param name="l"></param> /// <param name="hitpoint"></param> /// <param name="intersectpoint"></param> public void SetNewPoints(DrawTools.Line l, UnitPoint hitpoint, UnitPoint intersectpoint) { SetLine(l); double hitToVp1 = HitUtil.Distance(hitpoint, l.P1); //点击点到顶点的距离 double ispToVp1 = HitUtil.Distance(intersectpoint, l.P1); //交点到顶点的距离 // if hit is closer than intersect point, then keep this point and adjust the other //如果点击点很靠近交点,就保持这个点然后调整其他的点 if (hitToVp1 <= ispToVp1) { m_p2 = intersectpoint; } else { m_p1 = intersectpoint; } ResetLine(); }
/// <summary> /// /// </summary> /// <param name="canvas"></param> /// <param name="point"></param> /// <param name="snappoint"></param> /// <returns></returns> public eDrawObjectMouseDown OnMouseDown(ICanvas canvas, UnitPoint point, ISnapPoint snappoint) { List <IDrawObject> drawitems = canvas.DataModel.GetHitObjects(canvas, point); List <DrawTools.Line> lines = GetLines(drawitems); // add to source lines if (m_originalLines.Count == 0 || Control.ModifierKeys == Keys.Shift) { foreach (DrawTools.Line line in lines) { AddLine(point, line); } SetSelectHint(); return(eDrawObjectMouseDown.Continue); } if (m_originalLines.Count == 0 || Control.ModifierKeys == Keys.Control) { foreach (DrawTools.Line line in lines) { if (m_originalLines.ContainsKey(line)) { RemoveLine(line); } else { AddLine(point, line); } } SetSelectHint(); return(eDrawObjectMouseDown.Continue); } if (drawitems.Count == 0) { return(eDrawObjectMouseDown.Continue); } // all lines have been added, now find edge to where to extend if (drawitems[0] is DrawTools.Line) { DrawTools.Line edge = (DrawTools.Line)drawitems[0]; bool modified = false; foreach (LinePoints originalLp in m_originalLines.Values) { UnitPoint intersectpoint = HitUtil.LinesIntersectPoint(edge.P1, edge.P2, originalLp.Line.P1, originalLp.Line.P2); // lines intersect so shrink line if (intersectpoint != UnitPoint.Empty) { LinePoints lp = new LinePoints(); lp.SetLine(originalLp.Line); lp.MousePoint = originalLp.MousePoint; m_modifiedLines.Add(lp.Line, lp); lp.SetNewPoints(lp.Line, lp.MousePoint, intersectpoint); modified = true; continue; } // lines do not intersect, find apparent intersect point on existing edge line if (intersectpoint == UnitPoint.Empty) { UnitPoint apprarentISPoint = HitUtil.FindApparentIntersectPoint( edge.P1, edge.P2, originalLp.Line.P1, originalLp.Line.P2, false, true); if (apprarentISPoint == UnitPoint.Empty) { continue; } modified = true; originalLp.Line.ExtendLineToPoint(apprarentISPoint); LinePoints lp = new LinePoints(); lp.SetLine(originalLp.Line); lp.MousePoint = point; m_modifiedLines.Add(lp.Line, lp); } } if (modified) { canvas.DataModel.AfterEditObjects(this); } return(eDrawObjectMouseDown.Done); } if (drawitems[0] is DrawTools.Arc) { DrawTools.Arc edge = (DrawTools.Arc)drawitems[0]; foreach (LinePoints originalLp in m_originalLines.Values) { } bool modified = false; } return(eDrawObjectMouseDown.Done); }
public void SetLine(DrawTools.Line l) { m_line = l; m_p1 = l.P1; m_p2 = l.P2; }
public eDrawObjectMouseDown OnMouseDown(ICanvas canvas, UnitPoint point, ISnapPoint snappoint) { List <IDrawObject> items = canvas.DataModel.GetHitObjects(canvas, point); DrawTools.Line line = null; // find first line foreach (IDrawObject item in items) { if (item is DrawTools.Line) { line = item as DrawTools.Line; if (line != m_l1Original.Line) { break; } } } if (line == null) { if (m_l1Original.Line == null) { SetHint("No line selected. Select first line"); } else { SetHint("No line selected. Select second line"); } return(eDrawObjectMouseDown.Continue); } if (m_l1Original.Line == null) { line.Highlighted = true; m_l1Original.SetLine(line); m_l1Original.MousePoint = point; SetHint("Select second line"); return(eDrawObjectMouseDown.Continue); } if (m_l2Original.Line == null) { line.Highlighted = true; m_l2Original.SetLine(line); m_l2Original.MousePoint = point; UnitPoint intersectpoint = HitUtil.LinesIntersectPoint( m_l1Original.Line.P1, m_l1Original.Line.P2, m_l2Original.Line.P1, m_l2Original.Line.P2); // if lines do not intersect then extend lines to intersect point if (intersectpoint == UnitPoint.Empty) { UnitPoint apprarentISPoint = HitUtil.FindApparentIntersectPoint(m_l1Original.Line.P1, m_l1Original.Line.P2, m_l2Original.Line.P1, m_l2Original.Line.P2); if (apprarentISPoint == UnitPoint.Empty) { return(eDrawObjectMouseDown.Done); } m_l1Original.Line.ExtendLineToPoint(apprarentISPoint); m_l2Original.Line.ExtendLineToPoint(apprarentISPoint); m_l1NewPoint.SetLine(m_l1Original.Line); m_l2NewPoint.SetLine(m_l2Original.Line); canvas.DataModel.AfterEditObjects(this); return(eDrawObjectMouseDown.Done); } m_l1NewPoint.SetNewPoints(m_l1Original.Line, m_l1Original.MousePoint, intersectpoint); m_l2NewPoint.SetNewPoints(m_l2Original.Line, m_l2Original.MousePoint, intersectpoint); canvas.DataModel.AfterEditObjects(this); return(eDrawObjectMouseDown.Done); } return(eDrawObjectMouseDown.Done); }