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use OBBs for label collision detections

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This commit is contained in:
Hannes Janetzek
2013-02-11 10:08:41 +01:00
parent f2f93d180b
commit e69bebb2c5
2 changed files with 119 additions and 81 deletions
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12
src/org/oscim/renderer/layer/TextItem.java
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@@ -15,6 +15,7 @@
package org.oscim.renderer.layer;
import org.oscim.theme.renderinstruction.Text;
import org.oscim.utils.OBB2D;
import android.util.Log;
@@ -120,6 +121,9 @@ public class TextItem {
return this;
}
/* copy properties from 'ti' and add offset
*
* */
public TextItem move(TextItem ti, float dx, float dy, float scale) {
this.x = dx + (ti.x * scale);
this.y = dy + (ti.y * scale);
@@ -129,6 +133,13 @@ public class TextItem {
return this;
}
public void setAxisAlignedBBox(){
this.x1 = x - width / 2;
this.y1 = y - text.fontHeight / 2;
this.x2 = x + width / 2;
this.y2 = y + text.fontHeight / 2;
}
public static boolean bboxOverlaps(TextItem it1, TextItem it2, float add) {
if (it1.y1 < it1.y2) {
if (it2.y1 < it2.y2)
@@ -174,4 +185,5 @@ public class TextItem {
public byte origin;
public int active;
public OBB2D bbox;
}