private void Button1_Click(object sender, EventArgs e)
{
double x = Convert.ToDouble(textBox1.Text);
double y = Convert.ToDouble(textBox2.Text);
GISVertex onevertex = new GISVertex(x, y);
GISPoint onepoint = new GISPoint(onevertex);
//获取属性信息
string attribute = textBox3.Text;
GISAttribute oneattribute = new GISAttribute();
oneattribute.AddValue(attribute);
//新建一个GISFeature 并添加到features数组中
GISFeature onefeature = new GISFeature(onepoint, oneattribute);
features.Add(onefeature);
//画出这个GISFeature
Graphics graphics = this.CreateGraphics();
onefeature.draw(graphics, true, 0);
//参数分别是画笔 是否绘制属性 属性列表values的索引
}
private void button1_Click(object sender, EventArgs e)
{
double x = Convert.ToDouble(textBox1.Text);
double y = Convert.ToDouble(textBox2.Text);
string attribute = textBox3.Text;
GISPoint onepoint = new GISPoint(new GISVertex(x, y));
GISAttribute attributeset = new GISAttribute();
attributeset.AddValue(attribute);
GISFeature onefeasure = new GISFeature(onepoint, attributeset);
features.Add(onefeasure);
Graphics graphics = CreateGraphics();
onefeasure.draw(graphics, view, true, 0);
}
private List <GISFeature> GetRandomFeature(Random randobj, List <GISFeature> randgisfeature, int number)
{
//根据指定数量创造随机gisfeature对象
for (int i = 0; i < number; i++)
{
double lon = 360 * randobj.NextDouble() - 180;
double lat = 170 * randobj.NextDouble() - 85;
GISVertex onevertex = new GISVertex(lon, lat);
GISPoint onepoint = new GISPoint(onevertex);
//获取属性信息
string attribute1 = lon.ToString() + "," + lat.ToString();
string attribute2 = "地理坐标为：" + onevertex.mercatorx.ToString() + "," + onevertex.mercatory.ToString();
GISAttribute oneattribute = new GISAttribute();
oneattribute.AddValue(attribute1);
oneattribute.AddValue(attribute2);
//新建一个GISFeature 并添加到features数组中
GISFeature onefeature = new GISFeature(onepoint, oneattribute);
randgisfeature.Add(onefeature);
}
return(randgisfeature);
}
private void Form2_MouseUp(object sender, MouseEventArgs e)
{
if (MouseOnMap)
{
MouseOnMap = false;
switch (MouseCommand)
{
case MOUSECOMMAND.Select:
for (int i = 0; i < document.layers.Count; i++)
{
document.layers[i].ClearSelection();
}
if (e.X == MouseStartX && e.Y == MouseStartY)
{
for (int i = 0; i < document.layers.Count; i++)
{
GISFeature feature = document.layers[i].SelectByClick(new Point(e.X, e.Y), view);
if (feature != null)
{
feature.Selected = true;
}
}
}
else
{
GISExtent extent = view.RectToExtent(new Rectangle(
Math.Min(e.X, MouseStartX),
Math.Min(e.Y, MouseStartY),
Math.Abs(e.X - MouseStartX),
Math.Abs(e.Y - MouseStartY)));
for (int i = 0; i < document.layers.Count; i++)
{
List <GISFeature> features = document.layers[i].SelectByExtent(extent);
for (int j = 0; j < features.Count; j++)
{
features[j].Selected = true;
}
}
}
updateview();
if (layerDialog != null)
{
layerDialog.UpdateSelection();
}
break;
case MOUSECOMMAND.ZoomIn:
if (e.X == MouseStartX && e.Y == MouseStartY)
{
GISVertex MouseLocation = view.ToMapVertex(new Point(e.X, e.Y));
double ZoomInfactor = 0.8;
double newwidth = view.CurrentMapExtent.Width * ZoomInfactor;
double newheight = view.CurrentMapExtent.Height * ZoomInfactor;
double newminx = MouseLocation.x - (MouseLocation.x - view.CurrentMapExtent.MinX) * ZoomInfactor;
double newminy = MouseLocation.y - (MouseLocation.y - view.CurrentMapExtent.MinY) * ZoomInfactor;
view.CurrentMapExtent.SetValue(new GISVertex(newminx, newminy), new GISVertex(newminx + newwidth, newminy + newheight));
}
else
{
view.CurrentMapExtent = view.RectToExtent(new Rectangle(
Math.Min(e.X, MouseStartX),
Math.Min(e.Y, MouseStartY),
Math.Abs(e.X - MouseStartX),
Math.Abs(e.Y - MouseStartY)));
}
if (delaunayToolStripMenuItem1.Checked || 泰森多边形ToolStripMenuItem.Checked)
{
updateview2();
}
else
{
updateview();
}
break;
case MOUSECOMMAND.ZoomOut:
if (e.X == MouseStartX && e.Y == MouseStartY)
{
GISVertex MouseLocation = view.ToMapVertex(new Point(e.X, e.Y));
double ZoomOutfactor = 0.8;
double newwidth = view.CurrentMapExtent.Width / ZoomOutfactor;
double newheight = view.CurrentMapExtent.Height / ZoomOutfactor;
double newminx = MouseLocation.x - (MouseLocation.x - view.CurrentMapExtent.MinX) / ZoomOutfactor;
double newminy = MouseLocation.y - (MouseLocation.y - view.CurrentMapExtent.MinY) / ZoomOutfactor;
view.CurrentMapExtent.SetValue(new GISVertex(newminx, newminy), new GISVertex(newminx + newwidth, newminy + newheight));
}
else
{
GISExtent extent = view.RectToExtent(new Rectangle(
Math.Min(e.X, MouseStartX),
Math.Min(e.Y, MouseStartY),
Math.Abs(e.X - MouseStartX),
Math.Abs(e.Y - MouseStartY)));
double newwidth = view.CurrentMapExtent.Width * view.CurrentMapExtent.Width / extent.Width;
double newheight = view.CurrentMapExtent.Height * view.CurrentMapExtent.Height / extent.Height;
double newminx = extent.MinX - (extent.MinX - view.CurrentMapExtent.MinX) * newwidth / view.CurrentMapExtent.Width;
double newminy = extent.MinY - (extent.MinY - view.CurrentMapExtent.MinY) * newheight / view.CurrentMapExtent.Height;
view.CurrentMapExtent.SetValue(new GISVertex(newminx, newminy), new GISVertex(newminx + newwidth, newminy + newheight));
}
if (delaunayToolStripMenuItem1.Checked || 泰森多边形ToolStripMenuItem.Checked)
{
updateview2();
}
else
{
updateview();
}
break;
case MOUSECOMMAND.Pan:
GISVertex C1 = view.CurrentMapExtent.MapCenter;
GISVertex M1 = view.ToMapVertex(new Point(MouseStartX, MouseStartY));
GISVertex M2 = view.ToMapVertex(new Point(e.X, e.Y));
GISVertex C2 = new GISVertex(C1.x - (M2.x - M1.x), C1.y - (M2.y - M1.y));
view.CurrentMapExtent.SetMapCenter(C2);
updateview();
if (delaunayToolStripMenuItem1.Checked && dlay.Count > 0)
{
delaunayToolStripMenuItem1.PerformClick();
}
if (泰森多边形ToolStripMenuItem.Checked && dlay.Count > 0)
{
泰森多边形ToolStripMenuItem.PerformClick();
}
break;
}
}
}
