Examples with UpdatedTerrainPatch com.jme3.terrain.geomipmap.UpdatedTerrainPatch used on opensource projects

Example 1 with UpdatedTerrainPatch

use of com.jme3.terrain.geomipmap.UpdatedTerrainPatch in project jmonkeyengine by jMonkeyEngine.

the class DistanceLodCalculator method calculateLod.

public boolean calculateLod(TerrainPatch terrainPatch, List<Vector3f> locations, HashMap<String, UpdatedTerrainPatch> updates) {
    if (locations == null || locations.isEmpty())
        // no camera yet
        return false;
    float distance = getCenterLocation(terrainPatch).distance(locations.get(0));
    if (turnOffLod) {
        // set to full detail
        int prevLOD = terrainPatch.getLod();
        UpdatedTerrainPatch utp = updates.get(terrainPatch.getName());
        if (utp == null) {
            utp = new UpdatedTerrainPatch(terrainPatch);
            updates.put(utp.getName(), utp);
        }
        utp.setNewLod(0);
        utp.setPreviousLod(prevLOD);
        //utp.setReIndexNeeded(true);
        return true;
    }
    // go through each lod level to find the one we are in
    for (int i = 0; i <= terrainPatch.getMaxLod(); i++) {
        if (distance < getLodDistanceThreshold() * (i + 1) * terrainPatch.getWorldScaleCached().x || i == terrainPatch.getMaxLod()) {
            boolean reIndexNeeded = false;
            if (i != terrainPatch.getLod()) {
                reIndexNeeded = true;
            //System.out.println("lod change: "+lod+" > "+i+"    dist: "+distance);
            }
            int prevLOD = terrainPatch.getLod();
            UpdatedTerrainPatch utp = updates.get(terrainPatch.getName());
            if (utp == null) {
                //save in here, do not update actual variables
                utp = new UpdatedTerrainPatch(terrainPatch);
                updates.put(utp.getName(), utp);
            }
            utp.setNewLod(i);
            utp.setPreviousLod(prevLOD);
            return reIndexNeeded;
        }
    }
    return false;
}

Example 2 with UpdatedTerrainPatch

use of com.jme3.terrain.geomipmap.UpdatedTerrainPatch in project jmonkeyengine by jMonkeyEngine.

the class PerspectiveLodCalculator method calculateLod.

public boolean calculateLod(TerrainPatch patch, List<Vector3f> locations, HashMap<String, UpdatedTerrainPatch> updates) {
    if (turnOffLod) {
        // set to full detail
        int prevLOD = patch.getLod();
        UpdatedTerrainPatch utp = updates.get(patch.getName());
        if (utp == null) {
            utp = new UpdatedTerrainPatch(patch);
            updates.put(utp.getName(), utp);
        }
        utp.setNewLod(0);
        utp.setPreviousLod(prevLOD);
        //utp.setReIndexNeeded(true);
        return true;
    }
    float[] lodEntropies = patch.getLodEntropies();
    float cameraConstant = getCameraConstant(cam, pixelError);
    Vector3f patchPos = getCenterLocation(patch);
    // vector from camera to patch
    //Vector3f toPatchDir = locations.get(0).subtract(patchPos).normalizeLocal();
    //float facing = cam.getDirection().dot(toPatchDir);
    float distance = patchPos.distance(locations.get(0));
    // go through each lod level to find the one we are in
    for (int i = 0; i <= patch.getMaxLod(); i++) {
        if (distance < lodEntropies[i] * cameraConstant || i == patch.getMaxLod()) {
            boolean reIndexNeeded = false;
            if (i != patch.getLod()) {
                reIndexNeeded = true;
            //                    System.out.println("lod change: "+lod+" > "+i+"    dist: "+distance);
            }
            int prevLOD = patch.getLod();
            UpdatedTerrainPatch utp = updates.get(patch.getName());
            if (utp == null) {
                //save in here, do not update actual variables
                utp = new UpdatedTerrainPatch(patch);
                updates.put(utp.getName(), utp);
            }
            utp.setNewLod(i);
            utp.setPreviousLod(prevLOD);
            //utp.setReIndexNeeded(reIndexNeeded);
            return reIndexNeeded;
        }
    }
    return false;
}

Example 3 with UpdatedTerrainPatch

use of com.jme3.terrain.geomipmap.UpdatedTerrainPatch in project jmonkeyengine by jMonkeyEngine.

the class TerrainPatch method reIndexGeometry.

protected void reIndexGeometry(HashMap<String, UpdatedTerrainPatch> updated, boolean useVariableLod) {
    UpdatedTerrainPatch utp = updated.get(getName());
    if (utp != null && utp.isReIndexNeeded()) {
        int pow = (int) Math.pow(2, utp.getNewLod());
        boolean left = utp.getLeftLod() > utp.getNewLod();
        boolean top = utp.getTopLod() > utp.getNewLod();
        boolean right = utp.getRightLod() > utp.getNewLod();
        boolean bottom = utp.getBottomLod() > utp.getNewLod();
        IndexBuffer idxB;
        if (useVariableLod)
            idxB = geomap.writeIndexArrayLodVariable(pow, (int) Math.pow(2, utp.getRightLod()), (int) Math.pow(2, utp.getTopLod()), (int) Math.pow(2, utp.getLeftLod()), (int) Math.pow(2, utp.getBottomLod()), totalSize);
        else
            idxB = geomap.writeIndexArrayLodDiff(pow, right, top, left, bottom, totalSize);
        Buffer b;
        if (idxB.getBuffer() instanceof IntBuffer)
            b = (IntBuffer) idxB.getBuffer();
        else
            b = (ShortBuffer) idxB.getBuffer();
        utp.setNewIndexBuffer(b);
    }
}