public static void FitContoursToSize(double drawingWidth, double drawingHeight, FloatContour unknownContour, FloatContour dbContour,
out Contour displayUnknownContour, out Contour displayDBContour,
out double xOffset, out double yOffset)
{
if (unknownContour == null && dbContour == null)
{
throw new ArgumentNullException("Both contours null!");
}
float xMax, yMax, xMin, yMin;
if (unknownContour == null)
{
xMax = dbContour.MaxX();
yMax = dbContour.MaxY();
xMin = dbContour.MinX();
yMin = dbContour.MinY();
}
else if (dbContour == null)
{
xMax = unknownContour.MaxX();
yMax = unknownContour.MaxY();
xMin = unknownContour.MinX();
yMin = unknownContour.MinY();
}
else
{
xMax = (dbContour.MaxX() > (float)unknownContour.MaxX()) ? dbContour.MaxX() : (float)unknownContour.MaxX();
yMax = (dbContour.MaxY() > (float)unknownContour.MaxY()) ? dbContour.MaxY() : (float)unknownContour.MaxY();
xMin = (dbContour.MinX() < (float)unknownContour.MinX()) ? dbContour.MinX() : (float)unknownContour.MinX();
yMin = (dbContour.MinY() < (float)unknownContour.MinY()) ? dbContour.MinY() : (float)unknownContour.MinY();
}
float
xRange = xMax - xMin + 8, //***1.5 - added POINT_SIZE
yRange = yMax - yMin + 8; //***1.5 - added POINT_SIZE
float
heightRatio = (float)(drawingWidth / yRange),
widthRatio = (float)(drawingHeight / xRange);
float ratio;
if (heightRatio < widthRatio)
{
ratio = heightRatio;
xOffset = (drawingWidth - ratio * xRange) / 2 - xMin * ratio;
yOffset = 0 - yMin * ratio;
}
else
{
ratio = widthRatio;
xOffset = 0 - xMin * ratio;
yOffset = (drawingHeight - ratio * yRange) / 2 - yMin * ratio;
}
float ratioInverse = 1 / ratio;
if (unknownContour == null)
{
displayUnknownContour = null;
}
else
{
displayUnknownContour = new Contour(unknownContour, ratioInverse);
}
if (dbContour == null)
{
displayDBContour = null;
}
else
{
displayDBContour = new Contour(dbContour, ratioInverse);
}
}
