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/*
* Copyright (C) 2023 NotEnoughUpdates contributors
*
* This file is part of NotEnoughUpdates.
*
* NotEnoughUpdates is free software: you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, either
* version 3 of the License, or (at your option) any later version.
*
* NotEnoughUpdates is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with NotEnoughUpdates. If not, see <https://www.gnu.org/licenses/>.
*/
package io.github.moulberry.notenoughupdates.util
/**
* An axis aligned rectangle in the following coordinate space:
*
* * The top direction is towards y=-INF
* * The bottom direction is towards y=+INF
* * The right direction is towards x=+INF
* * The left direction is towards x=-INF
*/
data class Rectangle(
val x: Int, val y: Int,
val width: Int, val height: Int,
) {
val centerX: Int
get() = x + width / 2
val centerY: Int
get() = y + height / 2
/**
* The left edge of this rectangle (Low X)
*/
val left get() = x
/**
* The right edge of this rectangle (High X)
*/
val right get() = x + width
/**
* The top edge of this rectangle (Low X)
*/
val top get() = y
/**
* The bottom edge of this rectangle (High X)
*/
val bottom get() = y + height
init {
require(width >= 0)
require(height >= 0)
}
/**
* Check for intersections between two rectangles. Two rectangles with perfectly aligned edges do *not* count as
* intersecting.
*/
fun intersects(other: Rectangle): Boolean {
val intersectsX = !(right <= other.left || left >= other.right)
val intersectsY = !(top >= other.bottom || bottom <= other.top)
return intersectsX && intersectsY
}
/**
* Check if this rectangle contains the given coordinate
*/
fun contains(x1: Int, y1: Int): Boolean {
return left <= x1 && x1 < left + width && top <= y1 && y1 < top + height
}
}
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