public void draw(Graphics2D g, Matrix3x3f view) {
g.setColor(color);
Vector2f topLeft = new Vector2f(curPos.x - radius, curPos.y + radius);
topLeft = view.mul(topLeft);
Vector2f bottomRight = new Vector2f(curPos.x + radius, curPos.y - radius);
bottomRight = view.mul(bottomRight);
int circleX = (int) topLeft.x;
int circleY = (int) topLeft.y;
int circleWidth = (int) (bottomRight.x - topLeft.x);
int circleHeight = (int) (bottomRight.y - topLeft.y);
g.fillOval(circleX, circleY, circleWidth, circleHeight);
}
private Vector2f[] transform(Vector2f[] poly, Matrix3x3f mat) {
Vector2f[] copy = new Vector2f[poly.length];
for (int i = 0; i < poly.length; ++i) {
copy[i] = mat.mul(poly[i]);
}
return copy;
}
private Vector2f[] wrapSouth(Vector2f[] poly) {
return transform(poly, Matrix3x3f.translate(0.0f, -worldHeight));
}
private Vector2f[] wrapSouthWest(Vector2f[] poly) {
return transform(poly, Matrix3x3f.translate(-worldWidth, -worldHeight));
}
private Vector2f[] wrapNorthEast(Vector2f[] poly) {
return transform(poly, Matrix3x3f.translate(worldWidth, worldHeight));
}
private Vector2f[] wrapWest(Vector2f[] poly) {
return transform(poly, Matrix3x3f.translate(-worldWidth, 0.0f));
}