public virtual ImageObj Create_Scale(float length = 10000, string unit = "km")
{
string pathScale = Directory.GetCurrentDirectory() + "/ModelData/Image/GIS/Scale.png";
ImageObj imgScale = new ImageObj(100, 100);
//计算图例区间
double W = _Metadata.MaxX - _Metadata.MinX;
double ratioScale = W * 111000 / _Image.Width;
int nPixels = (int)(length / ratioScale);
var font = imgScale.defaultFont(11, "");
var sizeText = imgScale.Graphic.MeasureString(unit, font);
int nOffset_x = 10, nOffset_y = 8;
int nW = nPixels + nOffset_x * 3 + (int)sizeText.Width;
int nH = nOffset_y * 3 + (int)sizeText.Height;
imgScale.Create(pathScale, nPixels, nOffset_y);
//绘制
ImageColor pColor = new ImageColor("#192734");
ImageObj img = new ImageObj(nW, nH);
img.DrawImage(nOffset_x, nOffset_y + (int)sizeText.Height, imgScale, 1);
int hUnit = nOffset_y + (int)(sizeText.Height - imgScale.Height / 2 - 1);
img.DrawText(nOffset_x * 2 + nPixels, hUnit, pColor.Color, unit, font, 0, true, false, Alignment.Near, Alignment.Near);
int hDis = (int)(sizeText.Height / 2 - 1);
img.DrawText(nOffset_x, hDis, pColor.Color, "0", font, 0, true, false, Alignment.Center, Alignment.Near);
img.DrawText(nOffset_x + nPixels / 2 / 2, hDis, pColor.Color, (length / 1000 / 2 / 2).ToString(), font, 0, true, false, Alignment.Center, Alignment.Near);
img.DrawText(nOffset_x + nPixels / 2, hDis, pColor.Color, (length / 1000 / 2).ToString(), font, 0, true, false, Alignment.Center, Alignment.Near);
img.DrawText(nOffset_x + nPixels, hDis, pColor.Color, (length / 1000).ToString(), font, 0, true, false, Alignment.Center, Alignment.Near);
return(img);
}
public override bool Renderer(string strParams_renderer = "")
{
bool bResult = true;
_FloderRenderer = _FloderOutput;
if (base.Renderer(strParams_renderer))
{
//载入结果栅格
if (_dstRasterFile == "")
{
return(true);
}
GdalRead_TIFF gdalRead_TIFF = new GdalRead_TIFF();
gdalRead_TIFF.InitDataset(_dstRasterFile, 0, false);
string fileName = _Datas["title"] + _dtTag;
IRasterRenderer pRender = (IRasterRenderer)Renderer_Factory.CreateRenderer(emRenderType.Classify, gdalRead_TIFF);
pRender.InitParams(_Renderer);
pRender.Render();
pRender.Output(_FloderRenderer, fileName);
//图例处理等
JObject renderInfo = (JObject)pRender.ToRendererStr(false);
_Result["renderer"] = renderInfo;
_Renderer = (JObject)_Params["rendererParms"];
if (_Renderer != null)
{
//创建图例
if (Convert.ToBoolean(_Renderer["rendererOutputLegend"]))
{
bResult = bResult && pRender.Create_Legend(_FloderRenderer, "Legend_" + _Datas["title"]);
if (bResult)
{
_Result["renderer"]["renderer"]["nameLegend"] = pRender.Image_Legend.Name + pRender.Image_Legend.Suffix;
}
}
//创建发布图
if (Convert.ToBoolean(_Renderer["rendererOutputPublish"]))
{
//含图例的渲染图
ImageObj _Image = pRender.Image, _Image_legend = pRender.Image_Legend;
if (_Image_legend == null)
{
bResult = bResult && pRender.Create_Legend(_FloderRenderer, "Legend_" + _Datas["title"]);
_Image_legend = pRender.Image_Legend;
}
ImageColor pColor = new ImageColor("#192734");
ImageObj _Image_Scale = pRender.Create_Scale();
ImageObj img = new ImageObj(_Image.Width + _Image_legend.Width, _Image.Height > _Image_legend.Height ? _Image.Height : _Image_legend.Height);
img.DrawImage(_Image_legend.Width, 0, _Image, 1);
img.DrawImage(0, (int)((img.Height - _Image_legend.Height)), _Image_legend, 1);
img.DrawImage((int)(_Image_legend.Width * 1.2), (int)((img.Height - _Image_Scale.Height * 1.2)), _Image_Scale, 1);
img.DrawPolygon(0, 20, pColor.Color, 1, img.Width - 1, img.Height - 21);
img.Name = fileName + "_publish";
bResult = bResult && img.Save(_FloderRenderer);
if (bResult)
{
_Result["renderer"]["renderer"]["namePublish"] = img.Name + img.Suffix;
}
}
}
}
return(true);
}