94 lines
3.1 KiB
Haxe
94 lines
3.1 KiB
Haxe
package lnx2d.tools;
|
|
|
|
// Kha
|
|
import kha.math.Vector2;
|
|
|
|
// Zui
|
|
import zui.Zui;
|
|
import leenkx.ui.Canvas.TCanvas;
|
|
import leenkx.ui.Canvas.TElement;
|
|
|
|
class Math {
|
|
|
|
public static inline function toDegrees(radians:Float):Float { return radians * 57.29578; }
|
|
public static inline function toRadians(degrees:Float):Float { return degrees * 0.0174532924; }
|
|
|
|
/**
|
|
* Calculates if the mouse is in the given hitbox rectangle.
|
|
*
|
|
* @param ui The Zui object of which this function should take the mouse position
|
|
* @param x The x position of the hitbox
|
|
* @param y The y position of the hitbox
|
|
* @param w The width of the hitbox
|
|
* @param h The height of the hitbox
|
|
* @param rotation The rotation of the hitbox in radians, default = 0.0
|
|
* @param center (Optional) The [x, y] coordinates of the center of rotation. If not given or null, use the center of the rectangle given by (x, y, w, h)
|
|
* @return Bool
|
|
*/
|
|
public static function hitbox(ui: Zui, x: Float, y: Float, w: Float, h: Float, rotation: Float = 0.0, ?center: Array<Float>):Bool {
|
|
if (center != null && center.length != 2) {
|
|
throw "lnx2d.tools.Math.hitbox(): 'center' argument must consist of two values!";
|
|
}
|
|
|
|
if (center == null) center = [x + w / 2, y + h / 2];
|
|
|
|
var rotatedInput:Vector2 = rotatePoint(ui.inputX, ui.inputY, center[0], center[1], -rotation);
|
|
return rotatedInput.x > x && rotatedInput.x < x + w && rotatedInput.y > y && rotatedInput.y < y + h;
|
|
}
|
|
|
|
public static function absx(canvas:TCanvas, e:TElement):Float {
|
|
if (e == null) return 0;
|
|
return e.x + absx(canvas, CanvasTools.elemById(canvas, e.parent));
|
|
}
|
|
|
|
public static function absy(canvas:TCanvas, e:TElement):Float {
|
|
if (e == null) return 0;
|
|
return e.y + absy(canvas, CanvasTools.elemById(canvas, e.parent));
|
|
}
|
|
|
|
public static function roundPrecision(v:Float, ?precision=0):Float {
|
|
v *= std.Math.pow(10, precision);
|
|
|
|
v = Std.int(v) * 1.0;
|
|
v /= std.Math.pow(10, precision);
|
|
|
|
return v;
|
|
}
|
|
|
|
public static function rotatePoint(pointX: Float, pointY: Float, centerX: Float, centerY: Float, angle:Float): Vector2 {
|
|
pointX -= centerX;
|
|
pointY -= centerY;
|
|
|
|
var x = pointX * std.Math.cos(angle) - pointY * std.Math.sin(angle);
|
|
var y = pointX * std.Math.sin(angle) + pointY * std.Math.cos(angle);
|
|
|
|
return new Vector2(centerX + x, centerY + y);
|
|
}
|
|
|
|
public static function calculateTransformDelta(ui:Zui, gSP:Bool, gUR:Bool, gS:Int, value:Float, ?offset=0.0):Float {
|
|
var precisionMode = ui.isKeyDown && ui.key == Main.prefs.keyMap.slowMovement;
|
|
var enabled = gSP != (ui.isKeyDown && (ui.key == Main.prefs.keyMap.gridInvert));
|
|
var useOffset = gUR != (ui.isKeyDown && (ui.key == Main.prefs.keyMap.gridInvertRelative));
|
|
|
|
if (!enabled) return precisionMode ? value / 2 : value;
|
|
|
|
// Round the delta value to steps of gridSize
|
|
value = std.Math.round(value / gS) * gS;
|
|
|
|
if (precisionMode) value /= 2;
|
|
|
|
// Apply an offset
|
|
if (useOffset && offset != 0) {
|
|
offset = offset % gS;
|
|
|
|
// Round to nearest grid position instead of rounding off
|
|
if (offset > gS / 2) {
|
|
offset = -(gS - offset);
|
|
}
|
|
|
|
value -= offset;
|
|
}
|
|
return value;
|
|
}
|
|
|
|
} |