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Fix code view

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This commit is contained in:
sloop
2016-08-12 22:09:54 +08:00
parent acce0bc6f8
commit e2ceb6da22
1 changed files with 71 additions and 72 deletions
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143
CustomView/Advance/[10]Matrix_Method.md
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@@ -146,22 +146,21 @@ void mapPoints (float[] dst, int dstIndex,float[] src, int srcIndex, int pointCo
示例: 示例:
``` java ``` java
// 初始数据为三个点 (0, 0) (80, 100) (400, 300)
float[] pts = new float[]{0, 0, 80, 100, 400, 300};
// 初始数据为三个点 (0, 0) (80, 100) (400, 300) // 构造一个matrix，x坐标缩放0.5
float[] pts = new float[]{0, 0, 80, 100, 400, 300}; Matrix matrix = new Matrix();
matrix.setScale(0.5f, 1f);
// 构造一个matrix，x坐标缩放0.5
Matrix matrix = new Matrix(); // 输出pts计算之前数据
matrix.setScale(0.5f, 1f); Log.i(TAG, "before: "+ Arrays.toString(pts));
// 输出pts计算之前数据 // 调用map方法计算
Log.i(TAG, "before: "+ Arrays.toString(pts)); matrix.mapPoints(pts);
// 调用map方法计算 // 输出pts计算之后数据
matrix.mapPoints(pts); Log.i(TAG, "after : "+ Arrays.toString(pts));
// 输出pts计算之后数据
Log.i(TAG, "after : "+ Arrays.toString(pts));
``` ```
结果: 结果:
@@ -178,24 +177,24 @@ after : [0.0, 0.0, 40.0, 100.0, 200.0, 300.0]
示例: 示例:
``` java ``` java
// 初始数据为三个点 (0, 0) (80, 100) (400, 300) // 初始数据为三个点 (0, 0) (80, 100) (400, 300)
float[] src = new float[]{0, 0, 80, 100, 400, 300}; float[] src = new float[]{0, 0, 80, 100, 400, 300};
float[] dst = new float[6]; float[] dst = new float[6];
// 构造一个matrix，x坐标缩放0.5 // 构造一个matrix，x坐标缩放0.5
Matrix matrix = new Matrix(); Matrix matrix = new Matrix();
matrix.setScale(0.5f, 1f); matrix.setScale(0.5f, 1f);
// 输出计算之前数据 // 输出计算之前数据
Log.i(TAG, "before: src="+ Arrays.toString(src)); Log.i(TAG, "before: src="+ Arrays.toString(src));
Log.i(TAG, "before: dst="+ Arrays.toString(dst)); Log.i(TAG, "before: dst="+ Arrays.toString(dst));
// 调用map方法计算 // 调用map方法计算
matrix.mapPoints(dst,src); matrix.mapPoints(dst,src);
// 输出计算之后数据 // 输出计算之后数据
Log.i(TAG, "after : src="+ Arrays.toString(src)); Log.i(TAG, "after : src="+ Arrays.toString(src));
Log.i(TAG, "after : dst="+ Arrays.toString(dst)); Log.i(TAG, "after : dst="+ Arrays.toString(dst));
``` ```
结果: 结果:
@@ -224,24 +223,24 @@ pointCount | 计算的点个数
将第二、三个点计算后存储进dst最开始位置。 将第二、三个点计算后存储进dst最开始位置。
``` java ``` java
// 初始数据为三个点 (0, 0) (80, 100) (400, 300) // 初始数据为三个点 (0, 0) (80, 100) (400, 300)
float[] src = new float[]{0, 0, 80, 100, 400, 300}; float[] src = new float[]{0, 0, 80, 100, 400, 300};
float[] dst = new float[6]; float[] dst = new float[6];
// 构造一个matrix，x坐标缩放0.5 // 构造一个matrix，x坐标缩放0.5
Matrix matrix = new Matrix(); Matrix matrix = new Matrix();
matrix.setScale(0.5f, 1f); matrix.setScale(0.5f, 1f);
// 输出计算之前数据 // 输出计算之前数据
Log.i(TAG, "before: src="+ Arrays.toString(src)); Log.i(TAG, "before: src="+ Arrays.toString(src));
Log.i(TAG, "before: dst="+ Arrays.toString(dst)); Log.i(TAG, "before: dst="+ Arrays.toString(dst));
// 调用map方法计算(最后一个2表示两个点，即四个数值,并非两个数值) // 调用map方法计算(最后一个2表示两个点，即四个数值,并非两个数值)
matrix.mapPoints(dst, 0, src, 2, 2); matrix.mapPoints(dst, 0, src, 2, 2);
// 输出计算之后数据 // 输出计算之后数据
Log.i(TAG, "after : src="+ Arrays.toString(src)); Log.i(TAG, "after : src="+ Arrays.toString(src));
Log.i(TAG, "after : dst="+ Arrays.toString(dst)); Log.i(TAG, "after : dst="+ Arrays.toString(dst));
``` ```
结果: 结果:
@@ -264,18 +263,18 @@ float mapRadius (float radius)
示例: 示例:
``` java ``` java
float radius = 100; float radius = 100;
float result = 0; float result = 0;
// 构造一个matrix，x坐标缩放0.5 // 构造一个matrix，x坐标缩放0.5
Matrix matrix = new Matrix(); Matrix matrix = new Matrix();
matrix.setScale(0.5f, 1f); matrix.setScale(0.5f, 1f);
Log.i(TAG, "mapRadius: "+radius); Log.i(TAG, "mapRadius: "+radius);
result = matrix.mapRadius(radius); result = matrix.mapRadius(radius);
Log.i(TAG, "mapRadius: "+result); Log.i(TAG, "mapRadius: "+result);
``` ```
结果: 结果:
@@ -301,19 +300,19 @@ boolean mapRect (RectF dst, RectF src)
示例： 示例：
``` java ``` java
RectF rect = new RectF(400, 400, 1000, 800); RectF rect = new RectF(400, 400, 1000, 800);
// 构造一个matrix // 构造一个matrix
Matrix matrix = new Matrix(); Matrix matrix = new Matrix();
matrix.setScale(0.5f, 1f); matrix.setScale(0.5f, 1f);
matrix.postSkew(1,0); matrix.postSkew(1,0);
Log.i(TAG, "mapRadius: "+rect.toString()); Log.i(TAG, "mapRadius: "+rect.toString());
boolean result = matrix.mapRect(rect); boolean result = matrix.mapRect(rect);
Log.i(TAG, "mapRadius: "+rect.toString()); Log.i(TAG, "mapRadius: "+rect.toString());
Log.e(TAG, "isRect: "+ result); Log.e(TAG, "isRect: "+ result);
``` ```
结果： 结果：