// 矩形重疊類型注釋 // CORNER_OVERLAP // -------------------- // | | // | | // | **********|********** // | * | * // | * | * // ---------*---------| * // * * // * * // ********************* // // ANCHOR_OVERLAP // ---- // | | // | | // *******|**|******* // * | | * // * | | * // * ---- * // * * // ****************** // SAME_WIDTH_OVERLAP // |-----------------| // | | // ******************| // |-----------------* // * * // ******************* // // INSIDE_OVERLAP // ********************** // * * // * --------- * // * | | * // * | | * // * --------- * // * * // ********************** // // CROSS_OVERLAP // ----- // | | // | | // *****|***|****** // * | | * // * | | * // *****|***|****** // | | // ----- typedef enum EM_RectOverlapType {NO_OVERLAP,CORNER_OVERLAP,ANCHOR_OVERLAP,SAME_WIDTH_OVERLAP,INSIDE_OVERLAP,CROSS_OVERLAP,ERROR_OVERLAP, }EM_RectOverlapType;//判斷Rect重疊的類型，判定方法 //NO_OVERLAP: 重疊矩形面積為0 //CORNER_OVERLAP: 重疊矩形的一個角的兩條邊，與被判定矩形的一個角的兩條邊坐標一致(角的2條邊) //SAME_WIDTH_OVERLAP: 兩個矩形的橫向坐標或者縱向坐標一致，并且重疊。 //ANCHOR_OVERLAP: 重疊矩形的三條邊與被判定矩形的三條邊重疊(3個邊) //INSIDE_OVERLAP: 重疊矩形與被判定矩形的其中之一完全重合(4個邊) //CROSS_OVERLAP : 重疊矩形的平行的兩條邊與被判定矩形之一的對應兩條邊重疊，另兩條邊與另一個被判定矩形的對應的另兩條邊重疊(2對對應的兩條邊) //后三種的相同部分是都有平行的兩條邊重合，所以判定先重后三行開始 EM_RectOverlapType JudgeOverlapTypeByTwoRect(const EM_RECT& firstRect,const EM_RECT& overlapRect) {if ( (overlapRect.left == firstRect.left) && (overlapRect.right==firstRect.right))//平行2條邊{if ( (overlapRect.top == firstRect.top) )//3條邊{if (overlapRect.bottom == firstRect.bottom)//4條邊{return INSIDE_OVERLAP;}else{return ANCHOR_OVERLAP;}}else if (overlapRect.bottom == firstRect.bottom){if (overlapRect.top == firstRect.top){return INSIDE_OVERLAP;}else{return ANCHOR_OVERLAP;}}else{return SAME_WIDTH_OVERLAP;}}else if ((overlapRect.top == firstRect.top) && (overlapRect.bottom == firstRect.bottom) ){return SAME_WIDTH_OVERLAP;}else {return CORNER_OVERLAP;} }EM_RectOverlapType JudgeOverlapType(const EM_RECT& firstRect,const EM_RECT& secondRect,const EM_RECT& overlapRect) {EM_RectOverlapType firstType = JudgeOverlapTypeByTwoRect(firstRect,overlapRect);if (ERROR_OVERLAP != firstType){ return firstType;}else{EM_RectOverlapType secondType = JudgeOverlapTypeByTwoRect(secondRect,overlapRect); if (ERROR_OVERLAP != secondType){return secondType;}else{return ERROR_OVERLAP;}} }EM_RectOverlapType GetRectOverlapType(const EM_RECT& firstRect,const EM_RECT& secondRect) {EM_RECT overlapRect = GetOverlapRect(firstRect,secondRect);long overlapRectSize = GetEM_RECTSize(overlapRect);if (overlapRectSize){return JudgeOverlapType(firstRect,secondRect,overlapRect);}else{return NO_OVERLAP;} }

　　

轉載于:https://www.cnblogs.com/Dennis-mi/p/3812072.html

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