| | |
| | | import com.se.simu.domain.dto.ResultDto; |
| | | import com.se.simu.helper.GdalHelper; |
| | | import lombok.extern.slf4j.Slf4j; |
| | | import nonapi.io.github.classgraph.utils.FileUtils; |
| | | import org.gdal.gdal.Band; |
| | | import org.gdal.gdal.Dataset; |
| | | import org.gdal.gdal.WarpOptions; |
| | |
| | | } |
| | | |
| | | private static void createFlowPng(float[] vxBuffer, float[] vyBuffer, String png, int width, int height) { |
| | | // |
| | | BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); |
| | | Graphics2D graphic = image.createGraphics(); |
| | | Color transparent = new Color(0, 0, 0, 0); |
| | | graphic.setColor(transparent); |
| | | graphic.clearRect(0, 0, width, height); |
| | | |
| | | // 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]); |
| | | if (Float.isNaN(fx) && Float.isNaN(fy) || (fx == 0 && fy == 0)) continue; |
| | | |
| | | fx = Float.isNaN(fx) ? 0 : fx; |
| | | fy = Float.isNaN(fy) ? 0 : fy; |
| | | double dr = Math.sqrt(Math.pow(fx, 2) + Math.pow(fy, 2)); |
| | | |
| | | int r = (int) (dr / 4 * 255); |
| | | int g = (int) ((fx / dr * 0.5 + 0.5) * 255); |
| | | int b = (int) ((fy / dr * 0.5 + 0.5) * 255); |
| | | |
| | | Color color = new Color(getSafeValue(r), getSafeValue(g), getSafeValue(b), 127); |
| | | //image.setRGB(x, y, color.getRGB()); |
| | | graphic.drawImage(image, x, y, 1, 1, color, null); |
| | | } |
| | | } |
| | | graphic.dispose(); |
| | | savePng(image, png); |
| | | } |
| | | |
| | | private static float getFloatValue(float val) { |