static void Main(string[] args)
{
//LitMath.Vector2 v = new LitMath.Vector2(0.7, 0.7);
//v = LitMath.Vector2.RotateInRadian(v, LitMath.Utils.PI / 2);
//Console.WriteLine(v.ToString());
//Console.WriteLine(Math.Asin(0.5).ToString());
{
LitMath.Vector3 va = new LitMath.Vector3(0, 0, 1);
LitMath.Vector3 vb = new LitMath.Vector3(0, 1, 0);
LitMath.Vector3 axis = new LitMath.Vector3(1, 1, 0);
double angle = LitMath.Vector3.SignedAngle(va, vb, axis);
Console.WriteLine(angle);
}
{
LitMath.Vector3 va = new LitMath.Vector3(0, 0, 1);
LitMath.Vector3 vb = new LitMath.Vector3(0, 0, 1);
LitMath.Vector3 axis = new LitMath.Vector3(1, 1, 0);
double angle = LitMath.Vector3.SignedAngle(va, vb, axis);
Console.WriteLine(angle);
}
{
LitMath.Vector3 va = new LitMath.Vector3(0, 0, 1);
LitMath.Vector3 vb = new LitMath.Vector3(0, 1, 0);
LitMath.Vector3 axis = new LitMath.Vector3(0, 1, 1);
double angle = LitMath.Vector3.SignedAngle(va, vb, axis);
Console.WriteLine(angle);
}
return;
//LitMath.Vector2 v1 = new LitMath.Vector2(1, 3);
//Console.WriteLine(v1.ToString());
LitMath.Line2 line1 = new LitMath.Line2(
new LitMath.Vector2(0, 0),
new LitMath.Vector2(10, 0));
line1.startPoint.x = 10;
LitMath.Line2 line2 = new LitMath.Line2(
new LitMath.Vector2(5, 0),
new LitMath.Vector2(5, 10));
LitMath.Vector2 intersection = new LitMath.Vector2();
if (LitMath.Line2.Intersect(line1, line2, ref intersection))
{
Console.WriteLine("相交: " + intersection.ToString());
}
LitMath.Rectangle2 rect = new LitMath.Rectangle2(new LitMath.Vector2(10, 10), 10, 20);
Console.WriteLine(rect.ToString());
Console.WriteLine(rect.leftBottom.ToString());
Console.WriteLine(rect.leftTop.ToString());
Console.WriteLine(rect.rightTop.ToString());
Console.WriteLine(rect.rightBottom.ToString());
LitMath.Circle2 circle = new LitMath.Circle2(new LitMath.Vector2(25, 25), 10);
Console.WriteLine(circle.ToString());
Console.WriteLine(circle.diameter.ToString());
}
/// <summary>
/// 设置夹点
/// </summary>
public override void SetGripPointAt(int index, GripPoint gripPoint, LitMath.Vector2 newPosition)
{
if (index == 0)
{
_center = newPosition;
}
else if (index >= 1 && index <= 3)
{
LitMath.Vector2 startPoint = this.startPoint;
LitMath.Vector2 endPoint = this.endPoint;
LitMath.Vector2 middlePoint = this.middlePoint;
if (index == 1)
{
startPoint = newPosition;
middlePoint = (LitMath.Vector2)gripPoint.xData1;
}
else if (index == 2)
{
endPoint = newPosition;
middlePoint = (LitMath.Vector2)gripPoint.xData1;
}
else if (index == 3)
{
middlePoint = newPosition;
}
LitMath.Circle2 newCircle = LitMath.Circle2.From3Points(
startPoint, middlePoint, endPoint);
if (newCircle.radius > 0)
{
LitMath.Vector2 xPositive = new LitMath.Vector2(1, 0);
double startAngle = LitMath.Vector2.SignedAngleInRadian(xPositive,
startPoint - newCircle.center);
double endAngle = LitMath.Vector2.SignedAngleInRadian(xPositive,
endPoint - newCircle.center);
double middleAngle = LitMath.Vector2.SignedAngleInRadian(xPositive,
middlePoint - newCircle.center);
startAngle = MathUtils.NormalizeRadianAngle(startAngle);
endAngle = MathUtils.NormalizeRadianAngle(endAngle);
middleAngle = MathUtils.NormalizeRadianAngle(middleAngle);
_center = newCircle.center;
_radius = newCircle.radius;
if (AngleInArcRange(middleAngle, startAngle, endAngle))
{
this.startAngle = startAngle;
this.endAngle = endAngle;
}
else
{
this.startAngle = endAngle;
this.endAngle = startAngle;
}
}
}
}
