@Override
protected void update(GLViewport v) {
// scale coordinates relative to current 'zoom-level' to
// get the position as the nearest tile coordinate
int z = 1 << v.pos.zoomLevel;
int x = (int) (v.pos.x * z);
int y = (int) (v.pos.y * z);
// update layers when map moved by at least one tile
if (x == mCurX && y == mCurY && z == mCurZ) return;
mCurX = x;
mCurY = y;
mCurZ = z;
mMapPosition.copy(v.pos);
mMapPosition.x = (double) x / z;
mMapPosition.y = (double) y / z;
mMapPosition.scale = z;
if (mText != null) {
addLabels(x, y, v.pos.zoomLevel);
layers.setBaseLayers(mLineLayer);
mLineLayer.addLine(mLines);
compile();
} else if (layers.vbo == null) {
compile();
}
}
public GridRenderer(int numLines, LineStyle lineStyle, TextStyle textStyle) {
int size = Tile.SIZE;
// not needed to set but we know:
// 16 lines 'a' two points
mLines = new GeometryBuffer(2 * 16, 16);
float pos = -size * 4;
// 8 vertical lines
for (int i = 0; i < 8 * numLines; i++) {
float x = pos + i * size / numLines;
mLines.startLine();
mLines.addPoint(x, pos);
mLines.addPoint(x, pos + size * 8);
}
// 8 horizontal lines
for (int j = 0; j < 8 * numLines; j++) {
float y = pos + j * size / numLines;
mLines.startLine();
mLines.addPoint(pos, y);
mLines.addPoint(pos + size * 8, y);
}
mText = textStyle;
if (mText != null) {
mTextLayer = layers.addTextLayer(new TextLayer());
} else {
mTextLayer = null;
}
mLineLayer = layers.addLineLayer(0, lineStyle);
mLineLayer.addLine(mLines);
mStringBuffer = new StringBuffer(32);
}