//this checks if initial data is valid
private bool Setup(List <Line> lines)
{
if (!SetupPointGroups(lines))
{
return(false);
}
//setup control handles
Vector2D center1 = CurveTools.GetPointOnLine(pointGroup1[0], pointGroup1[segmentsCount - 1], 0.5f);
Vector2D center2 = CurveTools.GetPointOnLine(pointGroup2[0], pointGroup2[segmentsCount - 1], 0.5f);
Vector2D loc1 = GetHandleLocation(pointGroup1[0], pointGroup1[segmentsCount - 1], center2);
Vector2D loc2 = GetHandleLocation(pointGroup2[0], pointGroup2[segmentsCount - 1], center1);
ControlHandle ch1 = new ControlHandle {
ControlledPoint = pointGroup1[0], RelativePosition = loc1
};
ControlHandle ch2 = new ControlHandle {
ControlledPoint = pointGroup2[0], RelativePosition = loc2
};
ControlHandle ch3 = new ControlHandle {
ControlledPoint = pointGroup1[segmentsCount - 1], RelativePosition = loc1
};
ControlHandle ch4 = new ControlHandle {
ControlledPoint = pointGroup2[segmentsCount - 1], RelativePosition = loc2
};
ch1.Pair = ch3;
ch2.Pair = ch4;
ch3.Pair = ch1;
ch4.Pair = ch2;
controlHandles = new[] { ch1, ch2, ch3, ch4 };
//setup relative segments lengths
relLenGroup1 = GetRelativeLengths(pointGroup1);
relLenGroup2 = GetRelativeLengths(pointGroup2);
return(true);
}
//mxd
public void DrawLine3DFloor(Vector2D start, Vector2D end, ref PixelColor c, PixelColor c2)
{
Vector2D delta = end - start;
float length = delta.GetLength();
if (length < DASH_INTERVAL * 2)
{
DrawLineSolid((int)start.x, (int)start.y, (int)end.x, (int)end.y, ref c2);
}
else
{
float d1 = DASH_INTERVAL / length;
float d2 = 1.0f - d1;
Vector2D p1 = CurveTools.GetPointOnLine(start, end, d1);
Vector2D p2 = CurveTools.GetPointOnLine(start, end, d2);
DrawLineSolid((int)start.x, (int)start.y, (int)p1.x, (int)p1.y, ref c2);
DrawLineSolid((int)p1.x, (int)p1.y, (int)p2.x, (int)p2.y, ref c);
DrawLineSolid((int)p2.x, (int)p2.y, (int)end.x, (int)end.y, ref c2);
}
}
private void Update()
{
if (renderer.StartOverlay(true))
{
snaptogrid = General.Interface.ShiftState ^ General.Interface.SnapToGrid;
PixelColor linesColor = snaptogrid ? General.Colors.Selection : General.Colors.Highlight;
//draw curves
curves = new List <Vector2D[]>();
for (int i = 0; i < segmentsCount; i++)
{
Vector2D cp1 = CurveTools.GetPointOnLine(controlHandles[0].Position, controlHandles[2].Position, relLenGroup1[i]);
Vector2D cp2 = CurveTools.GetPointOnLine(controlHandles[1].Position, controlHandles[3].Position, relLenGroup2[i]);
curves.Add(CurveTools.GetCubicCurve(pointGroup1[i], pointGroup2[i], cp1, cp2, form.Subdivisions));
for (int c = 1; c < curves[i].Length; c++)
{
renderer.RenderLine(curves[i][c - 1], curves[i][c], LINE_THICKNESS, linesColor, true);
}
}
//draw connecting lines
if (form.Subdivisions > 1)
{
for (int i = 1; i < segmentsCount; i++)
{
for (int c = 1; c < form.Subdivisions; c++)
{
renderer.RenderLine(curves[i - 1][c], curves[i][c], LINE_THICKNESS, linesColor, true);
}
}
}
//draw vertices
float vsize = (renderer.VertexSize + 1.0f) / renderer.Scale;
foreach (Vector2D[] points in curves)
{
for (int i = 1; i < points.Length - 1; i++)
{
renderer.RenderRectangleFilled(new RectangleF(points[i].x - vsize, points[i].y - vsize, vsize * 2.0f, vsize * 2.0f), linesColor, true);
}
}
//draw handle lines
renderer.RenderLine(pointGroup1[0], controlHandles[0].Position, LINE_THICKNESS, handleColor, true);
renderer.RenderLine(pointGroup2[0], controlHandles[1].Position, LINE_THICKNESS, handleColor, true);
renderer.RenderLine(pointGroup1[segmentsCount - 1], controlHandles[2].Position, LINE_THICKNESS, handleColor, true);
renderer.RenderLine(pointGroup2[segmentsCount - 1], controlHandles[3].Position, LINE_THICKNESS, handleColor, true);
//draw handles
float gripsize = GRIP_SIZE / renderer.Scale;
for (int i = 0; i < 4; i++)
{
RectangleF handleRect = new RectangleF(controlHandles[i].Position.x - gripsize * 0.5f, controlHandles[i].Position.y - gripsize * 0.5f, gripsize, gripsize);
renderer.RenderRectangleFilled(handleRect, General.Colors.Background, true);
renderer.RenderRectangle(handleRect, 2, General.Colors.Highlight, true);
}
renderer.Finish();
}
renderer.Present();
}