| | |
| | | using System.Drawing; |
| | | using System.IO; |
| | | using System.Linq; |
| | | using System.Text; |
| | | using System.Threading.Tasks; |
| | | |
| | | namespace SimuTools.Tools |
| | |
| | | if (null == ds || 0 == ds.RasterCount || null == ds.GetSpatialRef()) return; |
| | | |
| | | SetTerrainInfo(ds, layer); |
| | | CreateTerrainPng(ds, layer, outPath); |
| | | //CreateTerrainPng(ds, layer, outPath); |
| | | } |
| | | finally |
| | | { |
| | |
| | | if (float.IsNaN(buffer[offset]) || buffer[offset] < -999) continue; |
| | | |
| | | //int val = Convert.ToInt32(buffer[offset] * 100); |
| | | int val = Convert.ToInt32((buffer[offset] - layer.extension.minHeight) * 100 / perHeight); |
| | | int val = Convert.ToInt32((buffer[offset] - layer.extension.minHeight + heightOffset) * 100 / perHeight); |
| | | int r = val / 65536; |
| | | int g = (val - r * 65536) / 256; |
| | | int b = val % 256; |
| | |
| | | SetWaterData(layer, files); |
| | | if (files.Count != layer.waters.data.Count) return; |
| | | |
| | | ProcessWaters(files, outPath, layer); |
| | | //ProcessWaters(files, outPath, layer); |
| | | } |
| | | |
| | | /// <summary> |
| | |
| | | if (null == vxFiles || null == vyFiles || vxFiles.Count != vyFiles.Count || vxFiles.Count != layer.waters.data.Count) return; |
| | | |
| | | Parallel.For(0, vxFiles.Count, i => |
| | | //for (int i = 0; i < vxFiles.Count; i++) |
| | | { |
| | | Dataset vxDs = null, vyDs = null; |
| | | try |
| | | { |
| | | vxDs = Gdal.Open(vxFiles[i], Access.GA_ReadOnly); |
| | | vyDs = Gdal.Open(vyFiles[i], Access.GA_ReadOnly); |
| | | if (null == vxDs || 0 == vxDs.RasterCount || null == vxDs.GetSpatialRef() || |
| | | null == vyDs || 0 == vyDs.RasterCount || null == vyDs.GetSpatialRef()) return; |
| | | |
| | |
| | | vxDs.GetRasterBand(1).ReadRaster(0, 0, width, height, vxBuffer, width, height, 0, 0); |
| | | vyDs.GetRasterBand(1).ReadRaster(0, 0, width, height, vyBuffer, width, height, 0, 0); |
| | | |
| | | Bitmap image = new Bitmap(width, height); |
| | | Graphics graphic = Graphics.FromImage(image); |
| | | graphic.Clear(Color.Transparent); // 填充透明色 |
| | | //double[] vxMm = new double[2]; |
| | | //vxDs.GetRasterBand(1).ComputeRasterMinMax(vxMm, 0); |
| | | //double[] vyMm = new double[2]; |
| | | //vyDs.GetRasterBand(1).ComputeRasterMinMax(vyMm, 0); |
| | | //double min = vxMm[0] < vyMm[0] ? vxMm[0] : vyMm[0]; |
| | | //double max = vxMm[1] > vyMm[1] ? vxMm[1] : vyMm[1]; |
| | | |
| | | // 用 R通道表示,流向为归一化的二维向量(x,y),G通道表示为 x *255 , B通道表示为 y * 255 |
| | | for (int x = 0; x < width; x++) |
| | | { |
| | | for (int y = 0; y < height; y++) |
| | | { |
| | | int offset = x + y * width; |
| | | float fx = GetFloatValue(vxBuffer[offset]); |
| | | float fy = GetFloatValue(vyBuffer[offset]); |
| | | |
| | | double dx = fx * 0.5 + 0.5; |
| | | double dy = fy * 0.5 + 0.5; |
| | | double dv = Math.Sqrt(Math.Pow(fx, 2) + Math.Pow(fy, 2)); |
| | | |
| | | int r = Convert.ToInt32(dv * 255); |
| | | int g = Convert.ToInt32(dx * 255); |
| | | int b = Convert.ToInt32(dy * 255); |
| | | |
| | | Color color = Color.FromArgb(127, r, g, b); |
| | | image.SetPixel(x, y, color); |
| | | } |
| | | } |
| | | |
| | | image.Save(png, System.Drawing.Imaging.ImageFormat.Png); |
| | | CreateFlowPng(vxBuffer, vyBuffer, png, width, height); |
| | | } |
| | | finally |
| | | { |
| | |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 创建流速流向PNG |
| | | /// </summary> |
| | | private static void CreateFlowPng(float[] vxBuffer, float[] vyBuffer, string png, int width, int height) |
| | | { |
| | | Bitmap image = new Bitmap(width, height); |
| | | Graphics graphic = Graphics.FromImage(image); |
| | | graphic.Clear(Color.Transparent); // 填充透明色 |
| | | |
| | | // 用 R通道表示,流向为归一化的二维向量(x,y),G通道表示为 x *255 , B通道表示为 y * 255 |
| | | for (int x = 0; x < width; x++) |
| | | { |
| | | for (int y = 0; y < height; y++) |
| | | { |
| | | int offset = x + y * width; |
| | | float fx = GetFloatValue(vxBuffer[offset]); |
| | | float fy = GetFloatValue(vyBuffer[offset]); |
| | | |
| | | double dv = GetXyValue(fx, fy); |
| | | double dx = float.IsNaN(fx) ? 0 : fx * 0.5 + 0.5; |
| | | double dy = float.IsNaN(fy) ? 0 : fy * 0.5 + 0.5; |
| | | |
| | | int r = Convert.ToInt32(dv * 255); |
| | | if (r > 255) r = 255; |
| | | int g = Convert.ToInt32(dx * 255); |
| | | int b = Convert.ToInt32(dy * 255); |
| | | |
| | | Color color = Color.FromArgb(127, r, g, b); |
| | | image.SetPixel(x, y, color); |
| | | } |
| | | } |
| | | image.Save(png, System.Drawing.Imaging.ImageFormat.Png); |
| | | } |
| | | |
| | | /// <summary> |
| | | /// 获取Float值 |
| | | /// </summary> |
| | | private static float GetFloatValue(float val) |
| | | { |
| | | return (float.IsNaN(val) || val < -999) ? 0 : val; |
| | | //return (float.IsNaN(val) || val < -999) ? float.NaN : val; |
| | | if (float.IsNaN(val) || val < -999) return float.NaN; |
| | | if (val > 1) return 1; |
| | | if (val < -1) return -1; |
| | | |
| | | return val; |
| | | } |
| | | |
| | | private static double GetXyValue(float fx, float fy) |
| | | { |
| | | if (float.IsNaN(fx) && float.IsNaN(fy)) |
| | | { |
| | | return 0; |
| | | } |
| | | if (float.IsNaN(fx)) |
| | | { |
| | | return Math.Abs(fy); |
| | | } |
| | | if (float.IsNaN(fy)) |
| | | { |
| | | return Math.Abs(fx); |
| | | } |
| | | |
| | | return Math.Sqrt(Math.Pow(fx, 2) + Math.Pow(fy, 2)); |
| | | } |
| | | #endregion |
| | | |