/// <summary>Rotates the given child around the given parent.</summary>
/// <remarks>Rotates the given child around the given parent.</remarks>
/// <param name="parent"></param>
/// <param name="child"></param>
public static void translateRelative(Com.Brashmonkey.Spriter.objects.SpriterAbstractObject
parent, Com.Brashmonkey.Spriter.objects.SpriterAbstractObject child)
{
translateRelative(parent, child.getX(), child.getY(), child);
}
/// <summary>Rotates the given point around the given parent.</summary>
/// <remarks>Rotates the given point around the given parent.</remarks>
/// <param name="parent"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="target">save new position in</param>
public static void translateRelative(Com.Brashmonkey.Spriter.objects.SpriterAbstractObject
parent, float x, float y, Com.Brashmonkey.Spriter.objects.SpriterAbstractObject
target)
{
float px = x * (parent.getScaleX());
float py = y * (parent.getScaleY());
float s = (float)System.Math.Sin(DegreeToRadian(parent.getAngle()));
float c = (float)System.Math.Cos(DegreeToRadian(parent.getAngle()));
float xnew = (px * c) - (py * s);
float ynew = (px * s) + (py * c);
xnew += parent.getX();
ynew += parent.getY();
target.setX(xnew);
target.setY(ynew);
}
public static void reTranslateRelative(Com.Brashmonkey.Spriter.objects.SpriterAbstractObject
parent, float x, float y, Com.Brashmonkey.Spriter.objects.SpriterAbstractObject
target)
{
target.setAngle(target.getAngle() - parent.getAngle());
target.setScaleX(target.getScaleX() / parent.getScaleX());
target.setScaleY(target.getScaleY() / parent.getScaleY());
float xx = x - parent.getX();
float yy = y - parent.getY();
double angle = DegreeToRadian(parent.getAngle());
float Cos = (float)System.Math.Cos(angle);
float Sin = (float)System.Math.Sin(angle);
float newX = yy * Sin + xx * Cos;
float newY = yy * Cos - xx * Sin;
target.setX(newX / parent.getScaleX());
target.setY(newY / parent.getScaleY());
}