private void DrawGrid(Rectangle rect, Graphics g)
{
if (startSurfaceGrid.Count == 0)
{
surface = new BezierSurface();
surface.SetPoints(startPoints);
startSurfaceGrid = surface.GetSurfaceGridPoints(tolerance, rows, columns);
surfaceGridPoints = null;
startSurfaceCells.Clear();
surfaceCells = null;
}
var drawGridPoints = Point3Utils.GetObjectProjection(surfaceGridPoints ?? startSurfaceGrid, rect.Width, rect.Height);
g.DrawGrid(Pens.Black, drawGridPoints);
}
private void Canvas_Paint(object sender, PaintEventArgs e)
{
var rect = new Rectangle(Canvas.Location.X, Canvas.Location.Y, Canvas.Size.Width, Canvas.Size.Height);
DrawXYZAxes(e.Graphics, rect);
var basePointsArray = points.Select(row => row.Select(point => point.GetDrawingPoint(rect.Width, rect.Height)).ToArray()).ToArray();
e.Graphics.DrawPoints(Brushes.Black, basePointsArray, pointRadius);
if (startSurfaceGrid.Count == 0)
{
surface = new BezierSurface();
surface.SetPoints(startPoints);
startSurfaceGrid = surface.GetSurfaceGridPoints(tolerance, rows, columns);
surfaceGridPoints = null;
}
var drawPoints = Point3Utils.GetObjectProjection(surfaceGridPoints ?? startSurfaceGrid, rect.Width, rect.Height);
e.Graphics.DrawGrid(Pens.Red, drawPoints);
}