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77 lines
1.5 KiB
C++
77 lines
1.5 KiB
C++
#pragma once
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#include "SigmaDoc.h"
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#include "DrawOperator/Xy.h"
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#include <cassert>
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/**
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* 曲线路径点绘制类
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*/
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class CurveNodeDrawer
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{
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public:
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CurveNodeDrawer(CSigmaDoc* pDoc)
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: m_pDoc(pDoc)
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{
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assert(m_pDoc != nullptr);
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}
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void Draw(CDC* pDC, CPositionList& positions) const
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{
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if (pDC == nullptr)
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{
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return;
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}
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CSize size = m_pDoc->GetHandleSize();
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POSITION pos = positions.GetHeadPosition();
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while (pos != nullptr)
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{
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POSITION pt = positions.GetNext(pos);
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COne* pOne = m_pDoc->m_pXy->GetAt(pt);
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if (pOne == nullptr)
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{
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continue;
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}
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if (pOne->GetType() != DOUBLEFOX_CURVE)
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{
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continue;
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}
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CCurveEx* pCurve = pOne->GetValueSafe<CCurveEx>();
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DrawSingleNode(pDC, pCurve, size);
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}
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}
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private:
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// 仅绘制单个曲线节点（核心绘制逻辑）
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void DrawSingleNode(CDC* pDC, CCurveEx* pCurve, const CSize& handleSize) const
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{
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CSize sz = m_pDoc->GetHandleSize();
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int lastDrawIndex = 0;
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for (int i = 0; i < pCurve->num; i++)
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{
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CPoint pt1 = m_pDoc->GetDC().GetScreen(pCurve->x[i], pCurve->y[i]);
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if (i == 0 || i == pCurve->num - 1)
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{
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m_pDoc->DrawHandle(pCurve->x[i], pCurve->y[i], TRACKER_NO_EDIT, pDC);
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}
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else
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{
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CPoint pt2 = m_pDoc->GetDC().GetScreen(pCurve->x[lastDrawIndex], pCurve->y[lastDrawIndex]);
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if (abs(pt1.x - pt2.x) > sz.cx || abs(pt1.y - pt2.y) > sz.cy)
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{
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m_pDoc->DrawHandle(pCurve->x[i], pCurve->y[i], TRACKER_NO_EDIT, pDC);
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lastDrawIndex = i;
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}
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}
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}
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}
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CSigmaDoc* m_pDoc = nullptr;
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};
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