Hello everyone.
Currently, I am drawing some polygon (connected points each other) on MapWinGis by some drawing functions of AxMap class such as: DrawLine, DrawPolygon, …etc. It works normally, however, there is a problem is that it occurs “serrated effect”. I have tried to repair it, but I have still found a method to solve it.
Can you help me. Thanks a lot.
Hello @tiennguyen
Could you maybe post some of the code you are using to create these? and maybe an image of the results?
Perhaps we could recreate it to help solve the problem.
Thank you.
Jerry.
I draw some icon by using drawing polygon (connect some points to create icons).
you can review my code following:
public static void DrawTrack(AxMap axMap, ref clsTrack symTrack)
{
if (symTrack.mConsIsOnDraw == false)
return;
axMap.DegreesToPixel(symTrack.mTrkLon, symTrack.mTrkLat, ref symTrack.mConsScreenX, ref symTrack.mConsScreenY);
if ((symTrack.mConsScreenX <= 0) || (symTrack.mConsScreenX >= GlobalVar.screenWidth)
|| (symTrack.mConsScreenY <= 0) || (symTrack.mConsScreenY >= GlobalVar.screenHeight))
{
symTrack.mConsIsOnDraw = false;
return;
}
symTrack.mConsScreenX = Math.Round(symTrack.mConsScreenX);
symTrack.mConsScreenY = Math.Round(symTrack.mConsScreenY);
uint drawPen;
int nSize;
switch (symTrack.mConsIden)
{
case (byte)GlobalVar.TRACK_TYPE.IDEN_TRACK_FRIEND:
drawPen = mwgUtils.ColorByName(tkMapColor.Red);
break;
case (byte)GlobalVar.TRACK_TYPE.IDEN_TRACK_ENERMY:
drawPen = mwgUtils.ColorByName(tkMapColor.Green);
break;
default:
drawPen = mwgUtils.ColorByName(tkMapColor.Navy);
break;
}
if (symTrack.mConsIsWarning)
{
if (symTrack.mConsBlinkDraw)
{
drawPen = mwgUtils.ColorByName(tkMapColor.Orange);
symTrack.mConsBlinkDraw = false;
}
else
{
drawPen = mwgUtils.ColorByName(tkMapColor.Navy);
symTrack.mConsBlinkDraw = true;
}
}
nSize = GlobalVar.zoomNow - 2;
double rdHead = Math.PI * symTrack.mTrkHead / 180.0;
double[] x;
double[] y;
double[] X;
double[] Y;
object xObj = null;
object yObj = null;
int nPoint = 0;
if (symTrack.mTrkType == "PLOT")
{
nPoint = 5;
x = new double[5];
y = new double[5];
X = new double[5];
Y = new double[5];
x[0] = symTrack.mConsScreenX - Math.Round(0.5 * nSize); y[0] = symTrack.mConsScreenY - Math.Round(0.5 * nSize);
x[1] = symTrack.mConsScreenX + Math.Round(0.5 * nSize); y[1] = symTrack.mConsScreenY - Math.Round(0.5 * nSize);
x[2] = symTrack.mConsScreenX + Math.Round(0.5 * nSize); y[2] = symTrack.mConsScreenY + Math.Round(0.5 * nSize);
x[3] = symTrack.mConsScreenX - Math.Round(0.5 * nSize); y[3] = symTrack.mConsScreenY + Math.Round(0.5 * nSize);
x[4] = symTrack.mConsScreenX - Math.Round(0.5 * nSize); y[4] = symTrack.mConsScreenY - Math.Round(0.5 * nSize);
RotatePolygon(x, y, symTrack.mConsScreenX, symTrack.mConsScreenY, 0, ref X, ref Y);
xObj = X as object;
yObj = Y as object;
}
if (symTrack.mTrkType == "PLANE")
{
nPoint = 19;
x = new double[19];
y = new double[19];
X = new double[19];
Y = new double[19];
x[0] = symTrack.mConsScreenX; y[0] = symTrack.mConsScreenY - Math.Round(1.7 * nSize);
x[1] = symTrack.mConsScreenX + Math.Round(0.25 * nSize); y[1] = symTrack.mConsScreenY - Math.Round(1.2 * nSize);
x[2] = symTrack.mConsScreenX + Math.Round(0.25 * nSize); y[2] = symTrack.mConsScreenY - Math.Round(0.3 * nSize);
x[3] = symTrack.mConsScreenX + Math.Round(1.5 * nSize); y[3] = symTrack.mConsScreenY + Math.Round(0.6 * nSize);
x[4] = symTrack.mConsScreenX + Math.Round(1.5 * nSize); y[4] = symTrack.mConsScreenY + Math.Round(0.9 * nSize);
x[5] = symTrack.mConsScreenX + Math.Round(0.25 * nSize); y[5] = symTrack.mConsScreenY + Math.Round(0.3 * nSize);
x[6] = symTrack.mConsScreenX + Math.Round(0.25 * nSize); y[6] = symTrack.mConsScreenY + Math.Round(1.2 * nSize);
x[7] = symTrack.mConsScreenX + Math.Round(0.6 * nSize); y[7] = symTrack.mConsScreenY + Math.Round(1.5 * nSize);
x[8] = symTrack.mConsScreenX + Math.Round(0.6 * nSize); y[8] = symTrack.mConsScreenY + Math.Round(1.7 * nSize);
x[9] = symTrack.mConsScreenX; y[9] = symTrack.mConsScreenY + Math.Round(1.5 * nSize);
x[10] = symTrack.mConsScreenX - Math.Round(0.6 * nSize); y[10] = symTrack.mConsScreenY + Math.Round(1.7 * nSize);
x[11] = symTrack.mConsScreenX - Math.Round(0.6 * nSize); y[11] = symTrack.mConsScreenY + Math.Round(1.5 * nSize);
x[12] = symTrack.mConsScreenX - Math.Round(0.25 * nSize); y[12] = symTrack.mConsScreenY + Math.Round(1.2 * nSize);
x[13] = symTrack.mConsScreenX - Math.Round(0.25 * nSize); y[13] = symTrack.mConsScreenY + Math.Round(0.3 * nSize);
x[14] = symTrack.mConsScreenX - Math.Round(1.5 * nSize); y[14] = symTrack.mConsScreenY + Math.Round(0.9 * nSize);
x[15] = symTrack.mConsScreenX - Math.Round(1.5 * nSize); y[15] = symTrack.mConsScreenY + Math.Round(0.6 * nSize);
x[16] = symTrack.mConsScreenX - Math.Round(0.25 * nSize); y[16] = symTrack.mConsScreenY - Math.Round(0.3 * nSize);
x[17] = symTrack.mConsScreenX - Math.Round(0.25 * nSize); y[17] = symTrack.mConsScreenY - Math.Round(1.2 * nSize);
x[18] = symTrack.mConsScreenX; y[18] = symTrack.mConsScreenY - Math.Round(1.7 * nSize);
RotatePolygon(x, y, symTrack.mConsScreenX, symTrack.mConsScreenY, rdHead, ref X, ref Y);
xObj = X as object;
yObj = Y as object;
}
if (symTrack.mTrkType == "SHIP")
{
nPoint = 7;
x = new double[7];
y = new double[7];
X = new double[7];
Y = new double[7];
x[0] = symTrack.mConsScreenX; y[0] = symTrack.mConsScreenY - Math.Round(1.6 * nSize);
x[1] = symTrack.mConsScreenX - Math.Round(0.6 * nSize); y[1] = symTrack.mConsScreenY - Math.Round(1.0 * nSize);
x[2] = symTrack.mConsScreenX - Math.Round(0.6 * nSize); y[2] = symTrack.mConsScreenY + Math.Round(1.5 * nSize);
x[3] = symTrack.mConsScreenX; y[3] = symTrack.mConsScreenY + Math.Round(1.0 * nSize);
x[4] = symTrack.mConsScreenX + Math.Round(0.6 * nSize); y[4] = symTrack.mConsScreenY + Math.Round(1.5 * nSize);
x[5] = symTrack.mConsScreenX + Math.Round(0.6 * nSize); y[5] = symTrack.mConsScreenY - Math.Round(1.0 * nSize);
x[6] = symTrack.mConsScreenX; y[6] = symTrack.mConsScreenY - Math.Round(1.6 * nSize);
RotatePolygon(x, y, symTrack.mConsScreenX, symTrack.mConsScreenY, rdHead, ref X, ref Y);
xObj = X as object;
yObj = Y as object;
}
if ((xObj != null) && (yObj != null))
{
// Draw Track
axMap.DrawPolygon(ref xObj, ref yObj, nPoint, drawPen, true); // BGR
//axMap.DrawWidePolygon(ref xObj, ref yObj, nPoint, drawPen, true, 1);
}
// Draw circle for selected track
if (symTrack.mConsIsSelected)
{
axMap.DrawCircle(symTrack.mConsScreenX, symTrack.mConsScreenY, nSize * 1.8, drawPen, false);
}
// Draw History
if (symTrack.mConsIsHistOn)
{
foreach (var key in symTrack.mConsTrkHis.Keys)
{
clsMwgPoint tmp = (clsMwgPoint)symTrack.mConsTrkHis[key];
axMap.DegreesToPixel(tmp.m_Long, tmp.m_Lat, ref tmp.m_ScreenX, ref tmp.m_ScreenY);
axMap.DrawPoint(tmp.m_ScreenX, tmp.m_ScreenY, 2, drawPen);
}
}
// Darw
if (symTrack.mConsIsPredicOn)
{
foreach (var key in symTrack.mConsTrkPredic.Keys)
{
clsMwgPoint tmp = (clsMwgPoint)symTrack.mConsTrkPredic[key];
axMap.DegreesToPixel(tmp.m_Long, tmp.m_Lat, ref tmp.m_ScreenX, ref tmp.m_ScreenY);
axMap.DrawPoint(tmp.m_ScreenX, tmp.m_ScreenY, 2, drawPen);
}
}
}
