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@@ -0,0 +1,38 @@
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+На пример кода, будет слежующий вывод
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+```
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+ override fun area(): Float {
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+ return width * height
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+ }
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+
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+ override fun resize(zoom: Int) {
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+ width*=zoom
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+ height*=zoom
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+ }
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+
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+ override fun rotate(direction: RotateDirection, centerX: Int, centerY: Int) {
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+ var tmpX = x - centerX
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+ var tmpY = y - centerY
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+ if (direction == RotateDirection.CounterClockwise){
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+ val buf = -tmpY
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+ tmpY = tmpX
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+ tmpX = buf
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+ }else{
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+ val buf = tmpY
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+ tmpY = - tmpX
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+ tmpX = buf
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+ }
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+
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+ x = tmpX + centerX;
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+ y = tmpY + centerY;
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+ }
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+```
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+
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+```
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+Rect area:1.0 x:0 y:0 width:1 height:1
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+Rect after resize 100.0 x:0 y:0 width:10 height:10
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+Circle area:12.56 x:1.0 y:2.0 r:2.0
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+Circle after resize area:1256.0 x:1.0 y:2.0 r:20.0
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+Circle after rotation area:1256.0 x:2.0 y:1.0 r:20.0
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+1256.0
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+
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+```
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