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145 lines
3.9 KiB
C++
145 lines
3.9 KiB
C++
#pragma once
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#include "CurveEditorBase.h"
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#include "HandleDrawer.h"
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#include "SplineCurveModel.h"
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#include "SplineDragPipeline.h"
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#include "SplineEditorRenderer.h"
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#include <memory>
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#include <vector>
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/**
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* @brief 三次样条曲线编辑模式
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*
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* 使用 Centripetal Catmull-Rom 算法，以控制点为唯一数据源，
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* 支持拖拽控制点、点击曲线添加节点、双击删除节点。
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*/
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class CurveEditorSpline : public CurveEditorBase, public ISplineDragPipelineContext
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{
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public:
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CurveEditorSpline(CSigmaDoc* pDoc);
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virtual ~CurveEditorSpline(void);
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// Mouse event handlers
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void OnDraw(CXyDC* pDC) override;
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void OnLButtonDblClk(UINT nFlags, CPoint point) override;
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void OnLButtonDown(CDC* pDC, UINT nFlags, CPoint point, int vk) override;
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int OnMouseMove(CDC* pDC, UINT nFlags, CPoint point) override;
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void OnLButtonUp(CDC* pDC, UINT nFlags, CPoint point, int vk) override;
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BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) override;
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BOOL OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) override;
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BOOL OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) override;
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int GetSubMenu() override;
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void SetPos(POSITION pos) override;
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void Clear(void) override;
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void Draw(CDC* pDC) override;
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void DrawAssistant(CDC* pDC, int mouseX, int mouseY) override;
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int GetNumberOfNode() override;
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void EreaseHandles(CDC* pDC) override;
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void EndEdit(void) override;
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void CancelAll(void) override;
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BOOL IsCanCancelAll(void) override;
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// =========================
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// 核心操作：控制点管理
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// =========================
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/**
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* @brief 初始化控制点
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*/
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void InitializeHandles(CCurveEx* pCurve);
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/**
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* @brief 测试是否是控制点
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*/
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int HitTestHandle(CPoint point) override;
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/**
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* @brief 删除控制点
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*/
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void DeleteHandle(int nIndex) override;
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/**
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* @brief 添加控制点
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*/
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int AddHandle(CPoint point) override;
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/**
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* @brief 判断是否可以添加控制点
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*/
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BOOL IsCanAddHandle(CPoint point, double* pl0 = nullptr) override;
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/**
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* @brief 获取当前控制点曲线，指针仅在本次调用链内有效
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*/
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CCurveEx* GetControlCurve(void) override;
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void GetXY(CCurveEx* pValue, int nIndex, dfPoint& point) override;
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void AttachProcess(CPointList& oldPoints, CPointList& newPoints) override;
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void DrawMoveLine(void) override;
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void GetMarkCurve(void) override;
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CPoint2D GetCDown() const override;
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CPoint2D GetCLast() const override;
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protected:
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void OnDrawDragPreview();
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void OnCalculateDragEffect(CPointList* pList);
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void OnDragMove(int nIndex, CPoint2D pt);
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int AddHandle(double l0);
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private:
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SplineCurveModel m_splineCurveModel;
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SplineDragState m_dragState;
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std::unique_ptr<SplineDragPipeline> m_dragPipeline;
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std::unique_ptr<COne> m_pBakOne;
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std::unique_ptr<HandleDrawer> m_handleDrawer;
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std::unique_ptr<SplineEditorRenderer> m_renderer;
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DWORD m_nHandleDrawMode;
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std::unique_ptr<CCurveEx> m_tempControlCurve;
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void DrawHandle(CXyDC* pDC, CCurveEx* pCurve);
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void DrawHandlesByCDC(CDC* pDC, CCurveEx* pCurve);
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void DrawSelectHandle(int nHandle);
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CRect GetRangeWidthIndex(int nIndex);
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CRect GetFirstNodeHandleRectFocus(CPoint point);
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int HitTestHandle(CCurveEx* pValue, CPoint point);
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// =========================
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// 核心操作：鼠标交互
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// =========================
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/**
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* @brief 是否是拖动状态
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*/
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bool IsDragging(int nFlags) const;
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/**
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* @brief 处理拖动
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*/
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int HandleMouseDrag(CXyDC* pXyDC, CPoint point);
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/**
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* @brief 处理 Hover
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*/
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int HandleMouseHover(CXyDC* pXyDC, CPoint point);
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int AcquireDragHandle(CPoint point);
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void ApplyDragAndRelease();
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void RemoveCurrentHandle();
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CSigmaDoc* GetDoc() override;
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POSITION GetPos() override;
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int GetHandleIndex() override;
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void WriteModelToDocCurve() override;
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void Invalidate() override;
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/**
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* @brief 在渲染点中找与屏幕点最近的点，返回段索引，可选输出世界坐标
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*/
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int FindSegmentIndexAtScreenPoint(CPoint screenPoint, dfPoint* pOutWorldPoint);
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}; |