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PODrawing a Circle with a forward vector and Moving both along with Rotation
 

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    <p>Been rather busy posting today and creating an AI program to simulate Boids. Right now I am just working on getting a single "boids" drawing a moving around. The "boid" is just a circle(ellipsis) with a line draw to symbolize its "Forward Vector".</p> <pre><code>class SwarmCir { public float _pointX; public float _pointY; public float _height; public float _width; Pen _pen = new Pen(Color.Black); PointF _ForwardPoint = new PointF(0, 0); float rotAng = 0.0f; public SwarmCir() { _pointX = 1.0f; _pointY = 1.0f; _height = 5.0f; _width = 5.0f; _ForwardPoint.X = 7.0f; _ForwardPoint.Y = 7.0f; } public SwarmCir(Point XY) { _pointX = XY.X; _pointY = XY.Y; _height = 5.0f; _width = 5.0f; } public SwarmCir( Point XY, float Height, float Width ) { _pointX = XY.X; _pointY = XY.Y; _height = Height; _width = Width; } public void SetPen(Pen p) { _pen = p; } public void Draw(Graphics g) { g.DrawEllipse(_pen, _pointX, _pointY, _width, _height); g.DrawLine(_pen, new PointF(_pointX, _pointY), _ForwardPoint); } public void Rotate(PaintEventArgs e) { e.Graphics.TranslateTransform(_pointX, _pointY); e.Graphics.RotateTransform(rotAng); e.Graphics.TranslateTransform(-_pointX, -_pointY); } public PointF ForwardVec() { PointF temp = new PointF(); temp.X = _pointX - _ForwardPoint.X; temp.Y = _pointY - _ForwardPoint.Y; return Normalize(temp); } public PointF Normalize(PointF p) { PointF temp = new PointF(); if (p.X &gt; p.Y) { temp.X = 1; temp.Y = p.Y / p.X; } else if (p.Y &gt; p.X) { temp.Y = 1; temp.X = p.X / p.Y; } else { return new PointF(1, 1); } return temp; } public void MoveForward() { _pointX += ForwardVec().X; _pointY += ForwardVec().Y; } public void MoveBackwards() { _pointX -= ForwardVec().X; _pointY -= ForwardVec().Y; } public void TurnLeft() { rotAng += 10.0f; } public void TurnRight() { rotAng -= 10.0f; } } </code></pre> <p>Currently when running a program implementing this class, instantiate a default SwarmCir() and just calling the moving functions at the bottom I get really weird results. Essentially I want 'W' to move the circle along the "forward vector" which ever way the line is pointing. Obviously for 'S' is just reverse. Then when turning I would like the shape and line to turn properly. If more information is needed Please ask. Working towards a complete AI workbench.</p>
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    1. USJoe Frambach
    1. USOrthmius
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    1. COCan you add a question to your post? And possible make sample that show problem you are facing a bit smaller (i.e. 7 lines would be perfect).
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      1. USAlexei Levenkov
    2. COI am not sure where my problem is at which is why I copy/pasted everything.
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      1. USOrthmius
    3. COAs stated "weird results", by this I mean the line and shape moving individually and turning does not work properly.
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      1. USOrthmius
 

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