Draw4: matrix skew

DysaniazzZ · Feb 23, 2018 · fcdd0b0 · fcdd0b0
1 parent e96234e
commit fcdd0b0
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/draw4/src/main/java/com/dysania/hencoderdraw4/practice/Practice10MatrixSkewView.java b/draw4/src/main/java/com/dysania/hencoderdraw4/practice/Practice10MatrixSkewView.java
@@ -4,6 +4,7 @@
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
+import android.graphics.Matrix;
 import android.graphics.Paint;
 import android.graphics.Point;
 import android.support.annotation.Nullable;
@@ -37,8 +38,23 @@ public Practice10MatrixSkewView(Context context, @Nullable AttributeSet attrs, i
     @Override
     protected void onDraw(Canvas canvas) {
         super.onDraw(canvas);
+        int bitmapWidth = bitmap.getWidth();
+        int bitmapHeight = bitmap.getHeight();
 
+        Matrix matrix = new Matrix();
+
+        canvas.save();
+        matrix.reset();
+        matrix.postSkew(0, 0.5f, point1.x + bitmapWidth / 2, point1.y + bitmapHeight / 2);
+        canvas.concat(matrix);
         canvas.drawBitmap(bitmap, point1.x, point1.y, paint);
+        canvas.restore();
+
+        canvas.save();
+        matrix.reset();
+        matrix.postSkew(-0.5f, 0, point2.x + bitmapWidth / 2, point2.y + bitmapHeight / 2);
+        canvas.concat(matrix);
         canvas.drawBitmap(bitmap, point2.x, point2.y, paint);
+        canvas.restore();
     }
 }