/// <summary>
/// The base area of an aquarium (cm2).
/// </summary>
public override double CalcBaseArea()
{
double glassThickness = GlassThickness;
double width = Width;
double centreWidth = CentreWidth;
double length = Length;
if (glassThickness > 0.0d)
{
double thicknessX2 = glassThickness * 2.0d;
width -= thicknessX2; // two sides
centreWidth -= thicknessX2; // two sides
length -= thicknessX2; // two sides
}
double chordWidth = centreWidth - width;
float radius, wedgeAngle;
ALData.CalcSegmentParams((float)chordWidth, (float)length, out radius, out wedgeAngle);
double segmSquare = (radius * radius * (wedgeAngle - Math.Sin(wedgeAngle))) / 2.0d;
double rectSquare = (length * width);
double baseArea = segmSquare + rectSquare;
return(baseArea);
}
// Draw an arc strip of a given height from y=0
private void DrawBowfront(float x1, float x2, float z1, float width, float fullWidth, float height, out float centerZ, out IList <Point3D> points)
{
float chordLength = x2 - x1;
float chordWidth = fullWidth - width;
float radius, wedgeAngle;
ALData.CalcSegmentParams(chordWidth, chordLength, out radius, out wedgeAngle);
wedgeAngle = (float)MathHelper.RadiansToDegrees(wedgeAngle);
centerZ = (z1 + fullWidth - radius);
Point3D p0 = new Point3D(0.0f, 0.0f, centerZ);
Point3D p1 = new Point3D(x2, 0.0f, centerZ);
Point3D p2 = new Point3D(x2, 0.0f, z1 + width);
float startAngle = Vector3D.GetAngle(p1.Sub(p0), p2.Sub(p0));
fScene.PushMatrix();
fScene.Translatef(0.0f, 0.0f, centerZ);
points = GetArcPoints(30, radius, startAngle, wedgeAngle);
DrawCylinder(points, height, radius);
fScene.PopMatrix();
}
