public static Line getLineInterval(Line line, float start, float end) {
assert start >= 0 && start <= 1;
assert end >= 0 && end <= 1;
return new Line(
line.getX1() + line.getDX() * start,
line.getY1() + line.getDY() * start,
line.getX1() + line.getDX() * end,
line.getY1() + line.getDY() * end);
}
public void drawLine(int x0, int y0, int x1, int y1, int blockId) {
l.set(x0, y0, x1, y1);
drawableMap.updateBlocks(l, blockId);
}
public boolean intersects(Entity e) {
Line interLine = new Line(pos.x, pos.y, pos.x + velocity.x, pos.y + velocity.y);
return interLine.intersects(e.sp);
}
public static Rectangle getNewBoundingRectangle(Shape shape) {
if (shape instanceof Circle) {
Circle circle = (Circle) shape;
float x = circle.getCenterX();
float y = circle.getCenterY();
float r = circle.getRadius();
return new Rectangle(x - r, y - r, 2 * r, 2 * r);
}
if (shape instanceof Line) {
Line line = (Line) shape;
float x1;
float x2;
if (line.getX2() > line.getX1()) {
x1 = line.getX1();
x2 = line.getX2();
} else {
x1 = line.getX2();
x2 = line.getX1();
}
float y1;
float y2;
if (line.getY2() > line.getY1()) {
y1 = line.getY1();
y2 = line.getY2();
} else {
y1 = line.getY2();
y2 = line.getY1();
}
return new Rectangle(
x1 - EPSILON, y1 - EPSILON, x2 - x1 + 1 + EPSILON, y2 - y1 + 1 + EPSILON);
}
if (shape instanceof Rectangle) {
Rectangle r = (Rectangle) shape;
return new Rectangle(r.getX(), r.getY(), r.getWidth(), r.getHeight());
}
assert false;
return new Rectangle(shape.getMinX(), shape.getMinY(), shape.getWidth(), shape.getHeight());
}
public static boolean lineEquals(Line l1, Line l2) {
return l1.getX1() == l2.getX1()
&& l1.getY1() == l2.getY1()
&& l1.getX2() == l2.getX2()
&& l1.getY2() == l2.getY2();
}