public void DrawGrid(Gridding grid)
{
GL.PointSize(1);
if (DC is DrawContextGLOrtho)
{
DrawGridOrtho(grid);
}
else if (DC is DrawContextGL)
{
DrawGridPerse(grid);
}
}
public virtual void DrawGrid(Gridding grid)
{
Vector3d lt = Vector3d.Zero;
Vector3d rb = new Vector3d(DC.ViewWidth, DC.ViewHeight, 0);
Vector3d ltw = DC.DevPointToWorldPoint(lt);
Vector3d rbw = DC.DevPointToWorldPoint(rb);
double minx = Math.Min(ltw.X, rbw.X);
double maxx = Math.Max(ltw.X, rbw.X);
double miny = Math.Min(ltw.Y, rbw.Y);
double maxy = Math.Max(ltw.Y, rbw.Y);
double minz = Math.Min(ltw.Z, rbw.Z);
double maxz = Math.Max(ltw.Z, rbw.Z);
DrawPen pen = DC.GetPen(DrawTools.PEN_GRID);
Vector3d p = default(Vector3d);
double n = grid.Decimate(DC, grid, 8);
double x, y, z;
double sx, sy, sz;
double szx = grid.GridSize.X * n;
double szy = grid.GridSize.Y * n;
double szz = grid.GridSize.Z * n;
sx = Math.Round(minx / szx) * szx;
sy = Math.Round(miny / szy) * szy;
sz = Math.Round(minz / szz) * szz;
x = sx;
while (x < maxx)
{
p.X = x;
p.Z = 0;
y = sy;
while (y < maxy)
{
p.Y = y;
DrawDot(pen, p);
y += szy;
}
x += szx;
}
z = sz;
y = sy;
while (z < maxz)
{
p.Z = z;
p.X = 0;
y = sy;
while (y < maxy)
{
p.Y = y;
DrawDot(pen, p);
y += szy;
}
z += szz;
}
z = sz;
x = sx;
while (x < maxx)
{
p.X = x;
p.Y = 0;
z = sz;
while (z < maxz)
{
p.Z = z;
DrawDot(pen, p);
z += szz;
}
x += szx;
}
}
/**
* 画面上での間隔が min より大きくなるように間引く為のサイズの
* 倍率を求める
*/
public double Decimate(DrawContext dc, Gridding grid, double min)
{
double scaleX = 1.0;
double scaleY = 1.0;
double scaleZ = 1.0;
double gridSizeX = grid.GridSize.X;
double gridSizeY = grid.GridSize.Y;
double gridSizeZ = grid.GridSize.Z;
Vector3d devLen;
double t = 1;
double d;
double devLenX;
double devLenY;
double devLenZ;
// X axis
devLen = dc.WorldVectorToDevVector(new Vector3d(gridSizeX, 0, 0));
devLenX = Math.Max(Math.Abs(devLen.X), Math.Abs(devLen.Y));
if (devLenX != 0 && devLenX < min)
{
d = Math.Ceiling(min / devLenX) * devLenX;
t = d / devLenX;
}
if (t > scaleX)
{
scaleX = t;
}
// Y axis
devLen = dc.WorldVectorToDevVector(new Vector3d(0, gridSizeY, 0));
devLenY = Math.Max(Math.Abs(devLen.X), Math.Abs(devLen.Y));
if (devLenY != 0 && devLenY < min)
{
d = Math.Ceiling(min / devLenY) * devLenY;
t = d / devLenY;
}
if (t > scaleY)
{
scaleY = t;
}
// Z axis
devLen = dc.WorldVectorToDevVector(new Vector3d(0, 0, gridSizeZ));
devLenZ = Math.Max(Math.Abs(devLen.X), Math.Abs(devLen.Y));
if (devLenZ != 0 && devLenZ < min)
{
d = Math.Ceiling(min / devLenZ) * devLenZ;
t = d / devLenZ;
}
if (t > scaleZ)
{
scaleZ = t;
}
return(Math.Max(Math.Max(scaleX, scaleY), scaleZ));
}
public void CopyFrom(Gridding g)
{
mGridSize = g.mGridSize;
Range = g.Range;
}
protected void DrawGridPerse(Gridding grid)
{
//double minx = -100;
//double maxx = 100;
//double miny = -100;
//double maxy = 100;
//double minz = -100;
//double maxz = 100;
//DrawPen pen = DC.GetPen(DrawTools.PEN_GRID);
//Vector3d p = default;
//double x, y, z;
//double sx, sy, sz;
//double szx = grid.GridSize.X;
//double szy = grid.GridSize.Y;
//double szz = grid.GridSize.Z;
//sx = Math.Round(minx / szx) * szx;
//sy = Math.Round(miny / szy) * szy;
//sz = Math.Round(minz / szz) * szz;
//x = sx;
//while (x < maxx)
//{
// p.X = x;
// p.Z = 0;
// y = sy;
// while (y < maxy)
// {
// p.Y = y;
// DrawDot(pen, p);
// y += szy;
// }
// x += szx;
//}
//z = sz;
//y = sy;
//while (z < maxz)
//{
// p.Z = z;
// p.X = 0;
// y = sy;
// while (y < maxy)
// {
// p.Y = y;
// DrawDot(pen, p);
// y += szy;
// }
// z += szz;
//}
//z = sz;
//x = sx;
//while (x < maxx)
//{
// p.X = x;
// p.Y = 0;
// z = sz;
// while (z < maxz)
// {
// p.Z = z;
// DrawDot(pen, p);
// z += szz;
// }
// x += szx;
//}
}