From c1d7138c68a9f15c8b53df0fb32de9be49d7e03b Mon Sep 17 00:00:00 2001
From: mkwiser <kekee000@126com>
Date: Sat, 6 Sep 2014 03:27:02 +0800
Subject: [PATCH] =?UTF-8?q?=E8=B4=9D=E5=A1=9E=E5=B0=94=E4=B8=8E=E7=BA=BF?=
 =?UTF-8?q?=E6=AE=B5=E5=85=B3=E7=B3=BB?=
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---
 src/graphics/isBezierLineCross.js    | 31 ++++++++++++++++++++++++++++
 src/graphics/isBezierSegmentCross.js | 28 +++++++++++++++++++++++++
 src/graphics/isSegmentCross.js       | 27 ++++++++++++++++++++++++
 3 files changed, 86 insertions(+)
 create mode 100644 src/graphics/isBezierLineCross.js
 create mode 100644 src/graphics/isBezierSegmentCross.js
 create mode 100644 src/graphics/isSegmentCross.js

diff --git a/src/graphics/isBezierLineCross.js b/src/graphics/isBezierLineCross.js
new file mode 100644
index 0000000..953e779
--- /dev/null
+++ b/src/graphics/isBezierLineCross.js
@@ -0,0 +1,31 @@
+/**
+ * @file isBezierLineCross.js
+ * @author mengke01
+ * @date 
+ * @description
+ * 判断贝塞尔曲线与直线相交
+ */
+
+define(
+    function(require) {
+        
+        /**
+         * 判断贝塞尔曲线与直线相交
+         * 
+         * @param {Object} p0 起点
+         * @param {Object} p1 控制点
+         * @param {Object} p2 终点
+         * @param {Object} s1 直线点1
+         * @param {Object} s2 直线点2
+         * @return {boolean|Object} 是否相交
+         */
+        function isBezierLineCross(p0, p1, p2, s1, s2) {
+            // y = kx + b
+            // x = at^2 + bt + c
+            // y = bt^2 + et + f
+            //(ka-d)t^2 + (kb-e)t + (kc+b-f) = 0
+        }
+
+        return isBezierLineCross;
+    }
+);
diff --git a/src/graphics/isBezierSegmentCross.js b/src/graphics/isBezierSegmentCross.js
new file mode 100644
index 0000000..809f2ba
--- /dev/null
+++ b/src/graphics/isBezierSegmentCross.js
@@ -0,0 +1,28 @@
+/**
+ * @file isBezierSegmentCross.js
+ * @author mengke01
+ * @date 
+ * @description
+ * 判断贝塞尔曲线与线段相交
+ */
+
+define(
+    function(require) {
+        
+        /**
+         * 判断贝塞尔曲线与线段相交
+         * 
+         * @param {Object} p0 起点
+         * @param {Object} p1 控制点
+         * @param {Object} p2 终点
+         * @param {Object} s1 线段点1
+         * @param {Object} s2 线段点2
+         * @return {boolean|Object} 是否相交
+         */
+        function isBezierSegmentCross(p0, p1, p2, s1, s2) {
+            
+        }
+
+        return isBezierSegmentCross;
+    }
+);
diff --git a/src/graphics/isSegmentCross.js b/src/graphics/isSegmentCross.js
new file mode 100644
index 0000000..91fe922
--- /dev/null
+++ b/src/graphics/isSegmentCross.js
@@ -0,0 +1,27 @@
+/**
+ * @file isSegmentCross.js
+ * @author mengke01
+ * @date 
+ * @description
+ * 线段是否相交
+ */
+
+define(
+    function(require) {
+        
+        /**
+         * 线段是否相交
+         * 
+         * @param {Object} s1 点1
+         * @param {Object} s2 点2
+         * @param {Object} t1 点1
+         * @param {Object} t1 点2
+         * @return {boolean|Object} 是否相交
+         */
+        function isSegmentCross(s1, s2, t1, t2) {
+
+        }
+
+        return isSegmentCross;
+    }
+);