ResultPoint.java revision 7e3fa36d69ffee874dd364b8e3d9aa3cab9a273b
/*
* Copyright 2007 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* <p>Encapsulates a point of interest in an image containing a barcode. Typically, this
* would be the location of a finder pattern or the corner of the barcode, for example.</p>
*
* @author Sean Owen
*/
public class ResultPoint {
private final float x;
private final float y;
public ResultPoint(float x, float y) {
this.x = x;
this.y = y;
}
public final float getX() {
return x;
}
public final float getY() {
return y;
}
if (other instanceof ResultPoint) {
return x == otherPoint.x && y == otherPoint.y;
}
return false;
}
public final int hashCode() {
}
}
/**
* <p>Orders an array of three ResultPoints in an order [A,B,C] such that AB < AC and
* BC < AC and the angle between BC and BA is less than 180 degrees.
*/
// Find distances between pattern centers
// Assume one closest to other two is B; A and C will just be guesses at first
} else {
}
// Use cross product to figure out whether A and C are correct or flipped.
// This asks whether BC x BA has a positive z component, which is the arrangement
// we want for A, B, C. If it's negative, then we've got it flipped around and
// should swap A and C.
}
}
/**
* @return distance between two points
*/
}
/**
* Returns the z component of the cross product between vectors BC and BA.
*/
}
}