MapCamera.java

package org.oscim.test.gdx.poi3d;

import org.oscim.core.MapPosition;
import org.oscim.core.Tile;
import org.oscim.map.Map;
import org.oscim.renderer.GLViewport;

import com.badlogic.gdx.graphics.Camera;
import com.badlogic.gdx.math.Matrix4;

public class MapCamera extends Camera {

	private final Map mMap;

	public MapCamera(Map map) {
		mMap = map;

		this.near = 1;
		this.far = 8;
	}

	MapPosition mMapPosition = new MapPosition();

	public void setPosition(MapPosition pos) {
		mMapPosition.copy(pos);

		this.viewportWidth = mMap.getWidth();
		this.viewportHeight = mMap.getHeight();
	}

	public void setMapPosition(double x, double y, double scale) {
		mMapPosition.setScale(scale);
		mMapPosition.x = x;
		mMapPosition.y = y;
	}

	public void update(GLViewport v) {
		double scale = (v.pos.scale * Tile.SIZE);

		float x = (float) ((mMapPosition.x - v.pos.x) * scale);
		float y = (float) ((mMapPosition.y - v.pos.y) * scale);
		float z = (float) (v.pos.scale / mMapPosition.scale);

		v.proj.get(projection.getValues());
		v.mvp.setTransScale(x, y, z);
		v.mvp.setValue(10, z);
		v.mvp.multiplyLhs(v.view);
		v.mvp.get(view.getValues());

		combined.set(projection);

		Matrix4.mul(combined.val, view.val);

		//if (updateFrustum) {
		invProjectionView.set(combined);
		Matrix4.inv(invProjectionView.val);
		frustum.update(invProjectionView);
		//}
	}

	@Override
	public void update() {
	}

	@Override
	public void update(boolean updateFrustum) {

	}

}