static public PointF ConvertAngleAndDistanceToXY(double angleInDegrees, double radius)
{
double angleInRadians = HelperFunctions.ConvertDegreesToRadians(angleInDegrees);
int x = Convert.ToInt32(Math.Sin(angleInRadians) * radius);
int y = Convert.ToInt32(Math.Cos(angleInRadians) * radius);
return(new PointF(x, y));
}
static internal Bitmap DrawCube(PictureBox pictureBox, double xAngle, double yAngle, double zAngle, PointF centrePoint, float actualEdgeLength)
{
Bitmap bitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
using (Graphics graphics = Graphics.FromImage(bitmap))
{
float halfWidth = pictureBox.Width / 2;
float halfHeight = pictureBox.Height / 2;
float halfEdgeLength = actualEdgeLength / 2F;
double radX = HelperFunctions.ConvertDegreesToRadians(xAngle);
double radY = HelperFunctions.ConvertDegreesToRadians(yAngle);
double radZ = HelperFunctions.ConvertDegreesToRadians(zAngle);
// X and Y angles are both 20ish. It is the Z angle that will change.
// 90 for x and y looks directly at the screen, 0 would show a line
double perceivedLengthXDouble = actualEdgeLength * Math.Cos(radX);
double perceivedLengthYDouble = actualEdgeLength * Math.Cos(radY);
float perceivedEdgeLengthX = Convert.ToSingle(perceivedLengthXDouble);
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
float leftXs = centrePoint.X - halfEdgeLength;
float rightXs = centrePoint.X + halfEdgeLength;
float topYs = centrePoint.X - halfEdgeLength;
float bottomYs = centrePoint.X + halfEdgeLength;
float halfPercX = perceivedEdgeLengthX / 2F;
PointF pointA = new PointF(leftXs, bottomYs + halfPercX);
PointF pointB = new PointF(rightXs, bottomYs + halfPercX);
PointF pointC = new PointF(rightXs + halfPercX, topYs + halfPercX);
PointF pointD = new PointF(leftXs + halfPercX, topYs + halfPercX);
PointF pointE = new PointF(leftXs, bottomYs + halfPercX - actualEdgeLength);
PointF pointF = new PointF(rightXs, bottomYs + halfPercX - actualEdgeLength);
PointF pointG = new PointF(rightXs + halfPercX, topYs + halfPercX - actualEdgeLength);
PointF pointH = new PointF(leftXs + halfPercX, topYs + halfPercX - actualEdgeLength);
PointF[] bottomFacePoints = new PointF[] { pointA, pointE, pointF, pointB };
PointF[] topFacePoints = new PointF[] { pointB, pointF, pointG, pointC };
PointF[] leftBackFacePoints = new PointF[] { pointC, pointG, pointH, pointD };
PointF[] rightBackFacePoints = new PointF[] { pointA, pointD, pointH, pointE };
PointF[] bottoms = new PointF[] { pointA, pointB, pointC, pointD };
PointF[] tops = new PointF[] { pointE, pointF, pointG, pointH };
PointF[] rotatedAroundZBot = HelperFunctions.RotatePolygon(bottomFacePoints, zAngle, pointA);
PointF[] rotatedAroundZTop = HelperFunctions.RotatePolygon(topFacePoints, zAngle, pointA);
PointF[] rotatedAroundZL = HelperFunctions.RotatePolygon(leftBackFacePoints, zAngle, pointA);
PointF[] rotatedAroundZR = HelperFunctions.RotatePolygon(rightBackFacePoints, zAngle, pointA);
PointF[] rotatedAroundZactbot = HelperFunctions.RotatePolygon(bottoms, zAngle, pointA);
PointF[] rotatedAroundZacttop = HelperFunctions.RotatePolygon(tops, zAngle, pointA);
graphics.FillPolygon(Brushes.LightBlue, rotatedAroundZBot);
graphics.FillPolygon(Brushes.SteelBlue, rotatedAroundZTop);
graphics.FillPolygon(Brushes.LightSteelBlue, rotatedAroundZR);
graphics.FillPolygon(Brushes.AliceBlue, rotatedAroundZL);
graphics.FillPolygon(Brushes.Gray, rotatedAroundZactbot);
// graphics.FillPolygon(Brushes.CadetBlue, rotatedAroundZacttop);
graphics.DrawPolygon(Pens.Black, rotatedAroundZBot);
graphics.DrawPolygon(Pens.Black, rotatedAroundZTop);
graphics.DrawPolygon(Pens.Black, rotatedAroundZR);
graphics.DrawPolygon(Pens.Black, rotatedAroundZL);
graphics.Dispose();
}
return(bitmap);
}
