From abb772e08beb75ec1f915921b779168133a5ce54 Mon Sep 17 00:00:00 2001
From: 13693261870 <252740454@qq.com>
Date: 星期一, 11 九月 2023 21:18:51 +0800
Subject: [PATCH] 解决栅格分析的线查询失败
---
src/main/java/com/moon/server/service/data/RasterAnalysisService.java | 25 ++++++++++++++-----------
1 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/src/main/java/com/moon/server/service/data/RasterAnalysisService.java b/src/main/java/com/moon/server/service/data/RasterAnalysisService.java
index d443f94..8c02940 100644
--- a/src/main/java/com/moon/server/service/data/RasterAnalysisService.java
+++ b/src/main/java/com/moon/server/service/data/RasterAnalysisService.java
@@ -85,7 +85,7 @@
analysisPoint(entity, ds, geo, size);
break;
case ogr.wkbLineString:
- analysisPolyline(entity, ds, geo);
+ analysisPolyline(entity, ds, geo, size);
break;
default:
analysisPolygon(entity, ds, geo);
@@ -104,8 +104,8 @@
/**
* 鍒嗘瀽鐐�
*/
- public void analysisPoint(AnalysisResultEntity entity, Dataset ds, Geometry point, int size) {
- double x = point.GetX(), y = point.GetY();
+ public void analysisPoint(AnalysisResultEntity entity, Dataset ds, Geometry geo, int size) {
+ double x = geo.GetX(), y = geo.GetY();
double[] transform = ds.GetGeoTransform();
// double rotationX = transform[2]; double rotationY = transform[4]
double minX = transform[0], pixelWidth = transform[1], maxY = transform[3], pixelHeight = transform[5];
@@ -129,17 +129,20 @@
/**
* 鍒嗘瀽绾�
*/
- public void analysisPolyline(AnalysisResultEntity entity, Dataset ds, Geometry polyline) {
+ public void analysisPolyline(AnalysisResultEntity entity, Dataset ds, Geometry geo, int size) {
double[] transform = ds.GetGeoTransform();
// double rotationX = transform[2]; double rotationY = transform[4]
- double minX = transform[0], pixelWidth = transform[1], maxY = transform[3], pixelHeight = transform[5];
+ double minX = transform[0], pixelWidth = transform[1], maxY = transform[3], pixelHeight = Math.abs(transform[5]);
+
+ double buffer = Math.max(Math.abs(pixelWidth), Math.abs(pixelHeight)) * size;
double[] env = new double[4];
- polyline.GetEnvelope(env);
+ geo = geo.Buffer(buffer);
+ geo.GetEnvelope(env);
int xMinPixel = (int) Math.floor((env[0] - minX) / pixelWidth);
- int yMinPixel = (int) Math.floor((maxY - env[3]) / Math.abs(pixelHeight));
+ int yMinPixel = (int) Math.floor((maxY - env[3]) / pixelHeight);
int xMaxPixel = (int) Math.floor((env[1] - minX) / pixelWidth);
- int yMaxPixel = (int) Math.floor((maxY - env[2]) / Math.abs(pixelHeight));
+ int yMaxPixel = (int) Math.floor((maxY - env[2]) / pixelHeight);
int bandCount = ds.getRasterCount();
int xMin = Math.min(xMinPixel, xMaxPixel);
@@ -152,7 +155,7 @@
for (int x = xMin; x <= xMax; x++) {
Geometry point = new Geometry(ogr.wkbPoint);
point.AddPoint(minX + pixelWidth * x, maxY - pixelHeight * y);
- if (polyline.Contains(point)) {
+ if (geo.Intersects(point)) {
for (int i = 1; i <= bandCount; i++) {
double[] values = new double[1];
ds.GetRasterBand(i).ReadRaster(x, y, 1, 1, values);
@@ -168,12 +171,12 @@
/**
* 鍒嗘瀽闈�
*/
- public void analysisPolygon(AnalysisResultEntity entity, Dataset ds, Geometry polygon) {
+ public void analysisPolygon(AnalysisResultEntity entity, Dataset ds, Geometry geo) {
double[] transform = ds.GetGeoTransform();
// double rotationX = transform[2]; double rotationY = transform[4]
double minX = transform[0], pixelWidth = transform[1], maxY = transform[3], pixelHeight = transform[5];
double[] env = new double[4];
- polygon.GetEnvelope(env);
+ geo.GetEnvelope(env);
int xMinPixel = (int) Math.floor((env[0] - minX) / pixelWidth);
int yMinPixel = (int) Math.floor((maxY - env[3]) / Math.abs(pixelHeight));
--
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