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- improve way-labeling

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- let nomination search places instead of tags
This commit is contained in:
Hannes Janetzek
2012-11-03 14:45:34 +01:00
parent 0eda94864f
commit b7aaaef485
14 changed files with 260 additions and 73 deletions
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16
src/org/oscim/utils/GeometryUtils.java
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@@ -14,6 +14,8 @@
*/
package org.oscim.utils;
import android.graphics.Point;
/**
*
*
@@ -22,7 +24,6 @@ public final class GeometryUtils {
/**
* Calculates the center of the minimum bounding rectangle for the given
* coordinates.
*
* @param coordinates
* the coordinates for which calculation should be done.
* @return the center coordinates of the minimum bounding rectangle.
@@ -165,12 +166,12 @@ public final class GeometryUtils {
*/
public static boolean lineIntersect(int x1, int y1, int x2, int y2, int x3, int y3, int x4,
int y4) {
double denom = (y4 - y3) * (x2 - x1) - (x4 - x3) * (y2 - y1);
float denom = (y4 - y3) * (x2 - x1) - (x4 - x3) * (y2 - y1);
if (denom == 0.0) { // Lines are parallel.
return false;
}
double ua = ((x4 - x3) * (y1 - y3) - (y4 - y3) * (x1 - x3)) / denom;
double ub = ((x2 - x1) * (y1 - y3) - (y2 - y1) * (x1 - x3)) / denom;
float ua = ((x4 - x3) * (y1 - y3) - (y4 - y3) * (x1 - x3)) / denom;
float ub = ((x2 - x1) * (y1 - y3) - (y2 - y1) * (x1 - x3)) / denom;
if (ua >= 0.0f && ua <= 1.0f && ub >= 0.0f && ub <= 1.0f) {
// Get the intersection point.
return true;
@@ -178,4 +179,11 @@ public final class GeometryUtils {
return false;
}
// http://en.wikipedia.org/wiki/Distance_from_a_point_to_a_line
public static double pointToLineDistance(Point A, Point B, Point P) {
double normalLength = Math.hypot(B.x - A.x, B.y - A.y);
return Math.abs((P.x - A.x) * (B.y - A.y) - (P.y - A.y) * (B.x - A.x)) / normalLength;
}
}