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use matrix utilities

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This commit is contained in:
Hannes Janetzek 2013-01-11 20:05:30 +01:00
parent 4acd9a492f
commit a7790537f2
2 changed files with 14 additions and 32 deletions
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25
src/org/oscim/renderer/overlays/RenderOverlay.java
View File

@ -25,6 +25,7 @@ import org.oscim.renderer.TextureRenderer;
import org.oscim.renderer.layer.Layer;
import org.oscim.renderer.layer.Layers;
import org.oscim.utils.FastMath;
import org.oscim.utils.GlUtils;
import org.oscim.view.MapView;
import android.opengl.GLES20;
@ -128,36 +129,30 @@ public abstract class RenderOverlay {
* @param matrix ...
*/
protected void setMatrix(MapPosition curPos, float[] matrix) {
// TODO if oPos == curPos this could be simplified
MapPosition oPos = mMapPosition;
byte z = oPos.zoomLevel;
float div = FastMath.pow(oPos.zoomLevel - curPos.zoomLevel);
float div = FastMath.pow(z - curPos.zoomLevel);
// translate relative to map center
float x = (float) (oPos.x - curPos.x * div);
float y = (float) (oPos.y - curPos.y * div);
// flip around date-line
float max = (Tile.TILE_SIZE << z);
// FIXME not sure if this is correct!
float max = (Tile.TILE_SIZE << oPos.zoomLevel);
if (x < -max / 2)
x = max + x;
else if (x > max / 2)
x = x - max;
// scale to current tile world coordinates
float scale = curPos.scale / div;
Matrix.setIdentityM(matrix, 0);
// set scale to be relative to current scale
float s = (curPos.scale / oPos.scale) / div;
// translate relative to map center
matrix[12] = x * scale;
matrix[13] = y * scale;
// scale to current tile world coordinates
scale = (curPos.scale / oPos.scale) / div;
scale /= GLRenderer.COORD_MULTIPLIER;
matrix[0] = scale;
matrix[5] = scale;
GlUtils.setMatrix(matrix, x * scale, y * scale,
s / GLRenderer.COORD_MULTIPLIER);
Matrix.multiplyMM(matrix, 0, curPos.viewMatrix, 0, matrix, 0);
}

21
src/org/oscim/renderer/overlays/TextOverlay.java
View File

@ -25,6 +25,7 @@ import org.oscim.renderer.layer.TextItem;
import org.oscim.renderer.layer.TextLayer;
import org.oscim.utils.FastMath;
import org.oscim.utils.GeometryUtils;
import org.oscim.utils.GlUtils;
import org.oscim.utils.PausableThread;
import org.oscim.view.MapView;
@ -291,30 +292,16 @@ public class TextOverlay extends RenderOverlay {
@Override
protected void setMatrix(MapPosition curPos, float[] matrix) {
// TODO if oPos == curPos this could be simplified
MapPosition oPos = mMapPosition;
byte z = oPos.zoomLevel;
float div = FastMath.pow(z - curPos.zoomLevel);
float div = FastMath.pow(oPos.zoomLevel - curPos.zoomLevel);
float x = (float) (oPos.x - curPos.x * div);
float y = (float) (oPos.y - curPos.y * div);
float scale = curPos.scale / div;
Matrix.setIdentityM(matrix, 0);
// translate relative to map center
matrix[12] = x * scale;
matrix[13] = y * scale;
// scale to current tile world coordinates
scale = curPos.scale / div; // oPos.scale / div;
scale /= GLRenderer.COORD_MULTIPLIER;
matrix[0] = scale;
matrix[5] = scale;
GlUtils.setMatrix(matrix, x * scale, y * scale,
scale / GLRenderer.COORD_MULTIPLIER);
Matrix.multiplyMM(matrix, 0, curPos.viewMatrix, 0, matrix, 0);
}