144 lines
4.5 KiB
Kotlin
144 lines
4.5 KiB
Kotlin
package com.icegps.geotools
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import android.util.Log
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import com.icegps.math.geometry.Vector2D
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import com.icegps.geotools.ktx.toMapboxPoint
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import com.mapbox.geojson.Feature
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import com.mapbox.geojson.FeatureCollection
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import com.mapbox.geojson.Polygon
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import com.mapbox.maps.MapView
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import com.mapbox.maps.Style
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import com.mapbox.maps.extension.style.expressions.generated.Expression
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import com.mapbox.maps.extension.style.layers.addLayer
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import com.mapbox.maps.extension.style.layers.generated.FillLayer
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import com.mapbox.maps.extension.style.layers.generated.LineLayer
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import com.mapbox.maps.extension.style.sources.addSource
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import com.mapbox.maps.extension.style.sources.generated.geoJsonSource
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/**
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* @author tabidachinokaze
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* @date 2025/11/26
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*/
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/**
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* 绘制斜坡设计结果
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*/
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fun MapView.displaySlopeResult(
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originalGrid: GridModel,
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slopeResult: SlopeResult,
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sourceId: String = "slope-result",
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layerId: String = "slope-layer",
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palette: (Double?) -> String,
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showDesignHeight: Boolean
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) {
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val elevationList = mutableListOf<Double>()
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mapboxMap.getStyle { style ->
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val features = mutableListOf<Feature>()
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val designGrid = slopeResult.designSurface
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// 对比测试，将绘制到原来图形的左边
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// val minX = originalGrid.minX * 2 - originalGrid.maxX
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val minX = originalGrid.minX
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val maxY = originalGrid.maxY
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val cellSize = originalGrid.cellSize
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for (r in 0 until originalGrid.rows) {
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for (c in 0 until originalGrid.cols) {
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val originalElev = originalGrid.getValue(r, c) ?: continue
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val designElev = designGrid.getValue(r, c) ?: continue
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elevationList.add(designElev)
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// 计算填挖高度
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val heightDiff = designElev - originalElev
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// 计算栅格边界
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val x0 = minX + c * cellSize
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val y0 = maxY - r * cellSize
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val x1 = x0 + cellSize
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val y1 = y0 - cellSize
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// 1. 创建多边形要素（背景色）
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val ring = listOf(
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Vector2D(x0, y0),
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Vector2D(x1, y0),
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Vector2D(x1, y1),
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Vector2D(x0, y1),
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Vector2D(x0, y0)
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).map { it.toMapboxPoint() }
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val poly = Polygon.fromLngLats(listOf(ring))
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val feature = Feature.fromGeometry(poly)
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if (showDesignHeight) {
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// 显示设计高度，测试坡向是否正确，和高度是否计算正确
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feature.addStringProperty("color", palette(designElev))
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} else {
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// 显示高差
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feature.addStringProperty("color", palette(heightDiff))
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}
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// 显示原始高度
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// feature.addStringProperty("color", palette(originalElev))
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features.add(feature)
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}
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}
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Log.d("displayGridWithDirectionArrows", "对比区域的土方量计算: ${elevationList.sum()}, 平均值：${elevationList.average()}")
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// 设置图层
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setupEarthworkLayer(style, sourceId, layerId, features)
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}
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}
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/**
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* 完整的土方工程图层设置 - 修正版
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*/
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private fun setupEarthworkLayer(
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style: Style,
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sourceId: String,
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layerId: String,
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features: List<Feature>,
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) {
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// 创建数据源
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val source = geoJsonSource(sourceId) {
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featureCollection(FeatureCollection.fromFeatures(features))
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}
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// 清理旧图层
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try {
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style.removeStyleLayer(layerId)
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} catch (_: Exception) {
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}
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try {
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style.removeStyleLayer("$layerId-arrow")
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} catch (_: Exception) {
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}
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try {
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style.removeStyleLayer("$layerId-outline")
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} catch (_: Exception) {
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}
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try {
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style.removeStyleLayer("$layerId-text")
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} catch (_: Exception) {
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}
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if (style.styleSourceExists(sourceId)) {
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style.removeStyleSource(sourceId)
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}
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// 添加数据源
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style.addSource(source)
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// 主填充图层
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val fillLayer = FillLayer(layerId, sourceId).apply {
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fillColor(Expression.toColor(Expression.get("color")))
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fillOpacity(0.7)
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}
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style.addLayer(fillLayer)
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// 边框图层
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val outlineLayer = LineLayer("$layerId-outline", sourceId).apply {
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lineColor("#333333")
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lineWidth(1.0)
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lineOpacity(0.5)
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}
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style.addLayer(outlineLayer)
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} |