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資源簡介

關于求線段和線段，線段和圓弧，圓弧與圓弧的交點算法和測試程序，里面有算法代碼，和測試程序，主要時理解算法，算法分析：http://blog.csdn.net/u012727080/article/details/78908614

資源截圖

代碼片段和文件信息 

#include?“stdafx.h“
#include?
#include?“LineAndArcFunction.h“

#define?LAAI_LINE	1
#define?LAAI_ARC	2

//?求2點的最大值和最小值
#define?MAX_VAR（a?b）	（（a）?>?（b）???（a）?:?（b））
#define?MIN_VAR（a?b）	（（a）?//?浮點型轉(zhuǎn)化為整型
#define?FloatToInt（a）	（int（a?+?0.5））
#define?PI		3.1415926

//?求相交函數(shù)
POINT?*?fnLineArcIntersect（strLineAndArc?laa_1?strLineAndArc?laa_2）
{
	POINT?*?pIntersection?=?NULL;
	//?角度轉(zhuǎn)換弧度
	laa_1.angle?=?laa_1.angle?*?PI?/?180;
	laa_2.angle?=?laa_2.angle?*?PI?/?180;

	int?laa1_x_min?=?MIN_VAR（laa_1.p1.x?laa_1.p2_O.x）;
	int?laa1_x_max?=?MAX_VAR（laa_1.p1.x?laa_1.p2_O.x）;
	int?laa1_y_min?=?MIN_VAR（laa_1.p1.y?laa_1.p2_O.y）;
	int?laa1_y_max?=?MAX_VAR（laa_1.p1.y?laa_1.p2_O.y）;
	int?laa2_x_min?=?MIN_VAR（laa_2.p1.x?laa_2.p2_O.x）;
	int?laa2_x_max?=?MAX_VAR（laa_2.p1.x?laa_2.p2_O.x）;
	int?laa2_y_min?=?MIN_VAR（laa_2.p1.y?laa_2.p2_O.y）;
	int?laa2_y_max?=?MAX_VAR（laa_2.p1.y?laa_2.p2_O.y）;

	//?線段與線段相交
	if?（laa_1.type?==?LAAI_LINE?&&?laa_2.type?==?LAAI_LINE）
	{
?		float?k1?=?0?k2?=?0?b1?=?0?b2?=?0;
		int?x?y;

		//?線段為一個點時
		if?（（laa_1.p1.x?==?laa_1.p2_O.x?&&?laa_1.p1.y?==?laa_1.p2_O.y）?||?（laa_2.p1.x?==?laa_2.p2_O.x?&&?laa_2.p1.y?==?laa_2.p2_O.y））
			return?NULL;

		//?線段L1L2在xy區(qū)間內(nèi)不想交，排除平行和直線等情況
		if（laa2_x_max??laa1_x_max?||?laa2_y_max??laa1_y_max）
		/*if?（（MAX_VAR（laa_2.p1.x?laa_2.p2_O.x）??MAX_VAR（laa_1.p1.x?laa_1.p2_O.x））
			||?（MAX_VAR（laa_2.p1.y?laa_2.p2_O.y）??MAX_VAR（laa_1.p1.y?laa_1.p2_O.y）））*/
			return?NULL;

		if?（laa_1.p1.x?==?laa_1.p2_O.x?&&?laa_2.p1.x?==?laa_2.p2_O.x）	//?線段L1L2斜率都不存在
			return?NULL;
		else?if?（laa_1.p1.x?==?laa_1.p2_O.x）		//?線段L1斜率不存在L2斜率存在
		{
			k2?=?float（laa_2.p2_O.y?-?laa_2.p1.y）?/?（laa_2.p2_O.x?-?laa_2.p1.x）;
			b2?=?float（laa_2.p1.y?-?（float）k2?*?laa_2.p1.x）;
			y?=?FloatToInt（（float）k2?*?laa_1.p1.x?+?b2）;
			if（y?>=?laa1_y_min?&&?y?<=?laa1_y_max）
			/*if?（y?>=?MIN_VAR（laa_1.p1.y?laa_1.p2_O.y）?&&?y?<=?MAX_VAR（laa_1.p1.y?laa_1.p2_O.y））*/
			{
				pIntersection?=?new?POINT[1];
				pIntersection[0].x?=?laa_1.p1.x;
				pIntersection[0].y?=?y;

				return?pIntersection;
			}

			return?NULL;
		}
		else?if（laa_2.p1.x?==?laa_2.p2_O.x）		//?線段L1斜率存在L2斜率不存在
		{
			k1?=?float（laa_1.p2_O.y?-?laa_1.p1.y）?/?（laa_1.p2_O.x?-?laa_1.p1.x）;
			b1?=?float（laa_1.p1.y?-?（float）k1?*?laa_1.p1.x）;
			y?=?FloatToInt（（float）k2?*?laa_2.p1.x?+?b2）;
			if（y?>=?laa2_y_min?&&?y?<=?laa2_y_max）
			/*if?（y?>=?MIN_VAR（laa_2.p1.y?laa_2.p2_O.y）?&&?y?<=?MAX_VAR（laa_2.p1.y?laa_2.p2_O.y））*/
			{
				pIntersection?=?new?POINT[1];
				pIntersection[0].x?=?laa_2.p1.x;
				pIntersection[0].y?=?y;

				return?pIntersection;
			}

			return?NULL;
		}
		else		//?線段L1L2斜率都存在
		{
			k1?=?float（laa_1.p2_O.y?-?laa_1.p1.y）?/?（laa_1.p2_O.x?-?la

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????109568??2017-12-26?15:29??LineAndCircleIntersect\Debug\LineAndArcIntersectGraphical.exe

?????文件?????454800??2017-12-26?15:29??LineAndCircleIntersect\Debug\LineAndArcIntersectGraphical.ilk

?????文件?????994304??2017-12-26?15:29??LineAndCircleIntersect\Debug\LineAndArcIntersectGraphical.pdb

?????文件??????40960??2017-12-25?08:51??LineAndCircleIntersect\Debug\LineAndCircleIntersect.exe

?????文件?????330444??2017-12-25?08:51??LineAndCircleIntersect\Debug\LineAndCircleIntersect.ilk

?????文件????1690624??2017-12-25?08:51??LineAndCircleIntersect\Debug\LineAndCircleIntersect.pdb

?????文件??????????1??2009-08-31?02:32??LineAndCircleIntersect\LineAndArcIntersectGraphical\ClassDiagram1.cd

?????文件???????4114??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\cl.command.1.tlog

?????文件??????13748??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\CL.read.1.tlog

?????文件???????4804??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\CL.write.1.tlog

?????文件??????27096??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcFunction.obj

?????文件????????406??2017-12-25?08:51??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical.exe.embed.manifest

?????文件????????472??2017-12-25?08:51??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical.exe.embed.manifest.res

?????文件????????381??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical.exe.intermediate.manifest

?????文件????????138??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical.lastbuildstate

?????文件???????7590??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical.log

?????文件??????28987??2017-12-26?14:31??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical.obj

?????文件????4456448??2017-12-25?10:46??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical.pch

?????文件??????48468??2017-12-25?10:47??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical.res

?????文件????????713??2017-12-25?09:35??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical.vcxprojResolveAssemblyReference.cache

?????文件??????????0??2017-12-25?08:51??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical.write.1.tlog

?????文件????????246??2017-12-25?08:51??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\LineAndArcIntersectGraphical_manifest.rc

?????文件??????????2??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\link-cvtres.read.1.tlog

?????文件??????????2??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\link-cvtres.write.1.tlog

?????文件??????????2??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\link.19608-cvtres.read.1.tlog

?????文件??????????2??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\link.19608-cvtres.write.1.tlog

?????文件??????????2??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\link.19608.read.1.tlog

?????文件??????????2??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\link.19608.write.1.tlog

?????文件??????????2??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\link.23000-cvtres.read.1.tlog

?????文件??????????2??2017-12-26?15:29??LineAndCircleIntersect\LineAndArcIntersectGraphical\Debug\link.23000-cvtres.write.1.tlog

............此處省略110個文件信息

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