添加 SlopeResult 显示的开关

android/src/main/java/com/icegps/geotools/MainActivity.kt

@@ -11,6 +11,7 @@ import com.google.android.material.slider.RangeSlider
 import com.google.android.material.slider.Slider
 import com.icegps.common.helper.GeoHelper
 import com.icegps.geotools.databinding.ActivityMainBinding
+import com.icegps.math.geometry.Angle
 import com.icegps.math.geometry.degrees
 import com.icegps.shared.model.GeoPoint
 import com.mapbox.geojson.Point
@@ -21,7 +22,10 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.filterNotNull
 import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onEach
+import kotlin.uuid.ExperimentalUuidApi
+import kotlin.uuid.Uuid
 
 class MainActivity : AppCompatActivity() {
     private lateinit var binding: ActivityMainBinding
@@ -166,11 +170,16 @@ class MainActivity : AppCompatActivity() {
             showDesignHeight.value = isChecked
         }
         earthworkManager.setupOnMoveListener()
+        binding.switchSlopeResult.setOnCheckedChangeListener { _, isChecked ->
+            slopeResultVisible.value = isChecked
+        }
         initData()
     }
 
     private val showDesignHeight = MutableStateFlow(false)
+    private val slopeResultVisible = MutableStateFlow(false)
 
+    @OptIn(ExperimentalUuidApi::class)
     private fun initData() {
         viewModel.points.onEach {
             contoursManager.updatePoints(it)
@@ -183,14 +192,32 @@ class MainActivity : AppCompatActivity() {
         earthworkManager.slopeDirection.onEach {
             binding.slopeDirection.value = it.degrees.toFloat()
         }.launchIn(lifecycleScope)
+        val slopeResultSourceId: String = Uuid.random().toString()
+        val slopeResultLayerId: String = Uuid.random().toString()
         combine(
             earthworkManager.slopeDirection,
             earthworkManager.slopePercentage,
             earthworkManager.baseHeightOffset,
             contoursManager.gridModel,
-            showDesignHeight
-        ) { slopeDirection, slopePercentage, baseHeightOffset, gridModel, showDesignHeight ->
-            gridModel?.let { gridModel ->
+            showDesignHeight,
+            slopeResultVisible
+        ) {
+            Params6(
+                p1 = it[0] as Angle,
+                p2 = it[1] as Double,
+                p3 = it[2] as Double,
+                p4 = it[3] as? GridModel?,
+                p5 = it[4] as Boolean,
+                p6 = it[5] as Boolean
+            )
+        }.map { (slopeDirection, slopePercentage, baseHeightOffset, gridModel, showDesignHeight, slopeResultVisible) ->
+            if (!slopeResultVisible) {
+                mapView.mapboxMap.getStyle { style ->
+                    style.removeStyleLayer(slopeResultLayerId)
+                    style.removeStyleLayer("${slopeResultLayerId}-outline")
+                    style.removeStyleSource(slopeResultSourceId)
+                }
+            } else gridModel?.let { gridModel ->
                 val slopeResult: SlopeResult = SlopeCalculator.calculateSlope(
                     grid = gridModel,
                     slopeDirection = slopeDirection.degrees,
@@ -200,6 +227,8 @@ class MainActivity : AppCompatActivity() {
                 mapView.displaySlopeResult(
                     originalGrid = gridModel,
                     slopeResult = slopeResult,
+                    sourceId = slopeResultSourceId,
+                    layerId = slopeResultLayerId,
                     palette = contoursManager.simplePalette::palette,
                     showDesignHeight = showDesignHeight
                 )
@@ -208,6 +237,22 @@ class MainActivity : AppCompatActivity() {
     }
 }
 
+data class Params6<
+        out P1,
+        out P2,
+        out P3,
+        out P4,
+        out P5,
+        out P6,
+        >(
+    val p1: P1,
+    val p2: P2,
+    val p3: P3,
+    val p4: P4,
+    val p5: P5,
+    val p6: P6,
+)
+
 val home = GeoPoint(114.476060, 22.771073, 30.897)
 
 fun initGeoHelper(base: GeoPoint = home) {

android/src/main/java/com/icegps/geotools/PolygonTest.kt

@@ -1,123 +0,0 @@
-package com.icegps.geotools
-
-import android.graphics.Color
-import com.icegps.common.helper.GeoHelper
-import com.icegps.math.geometry.Vector3D
-import com.icegps.geotools.ktx.toMapboxPoint
-import com.mapbox.geojson.Feature
-import com.mapbox.geojson.FeatureCollection
-import com.mapbox.geojson.LineString
-import com.mapbox.geojson.Polygon
-import com.mapbox.maps.MapView
-import com.mapbox.maps.Style
-import com.mapbox.maps.extension.style.layers.addLayer
-import com.mapbox.maps.extension.style.layers.generated.fillLayer
-import com.mapbox.maps.extension.style.layers.generated.lineLayer
-import com.mapbox.maps.extension.style.layers.properties.generated.LineCap
-import com.mapbox.maps.extension.style.layers.properties.generated.LineJoin
-import com.mapbox.maps.extension.style.sources.addSource
-import com.mapbox.maps.extension.style.sources.generated.geoJsonSource
-
-class PolygonTest(
-    private val mapView: MapView
-) {
-    private val geoHelper = GeoHelper.Companion.getSharedInstance()
-
-    private val contourSourceId = "contour-source-id-0"
-    private val contourLayerId = "contour-layer-id-0"
-
-    private val fillSourceId = "fill-source-id-0"
-    private val fillLayerId = "fill-layer-id-0"
-
-    fun update(
-        outer: List<Vector3D>,
-        inner: List<Vector3D>,
-        other: List<Vector3D>
-    ) {
-        val lineFeatures = mutableListOf<Feature>()
-        val fillFeatures = mutableListOf<Feature>()
-
-        val outerPoints = outer.map { it.toMapboxPoint() }
-        val innerPoints = inner.map { it.toMapboxPoint() }
-        val otherPoints = other.map { it.toMapboxPoint() }
-        val outerLine = LineString.fromLngLats(outerPoints)
-        Feature.fromGeometry(outerLine).also {
-            lineFeatures.add(it)
-        }
-        val innerLine = LineString.fromLngLats(innerPoints)
-        Feature.fromGeometry(innerLine).also {
-            lineFeatures.add(it)
-        }
-        Feature.fromGeometry(LineString.fromLngLats(otherPoints)).also {
-            lineFeatures.add(it)
-        }
-
-        //val polygon = Polygon.fromOuterInner(outerLine, innerLine)
-        val polygon = Polygon.fromLngLats(listOf(outerPoints, otherPoints, innerPoints))
-
-        mapView.mapboxMap.getStyle { style ->
-            if (false) setupLineLayer(
-                style = style,
-                sourceId = contourSourceId,
-                layerId = contourLayerId,
-                features = lineFeatures
-            )
-            setupFillLayer(
-                style = style,
-                sourceId = fillSourceId,
-                layerId = fillLayerId,
-                features = listOf(Feature.fromGeometry(polygon))
-            )
-        }
-    }
-
-    private fun setupLineLayer(
-        style: Style,
-        sourceId: String,
-        layerId: String,
-        features: List<Feature>
-    ) {
-        style.removeStyleLayer(layerId)
-        style.removeStyleSource(sourceId)
-
-        val source = geoJsonSource(sourceId) {
-            featureCollection(FeatureCollection.fromFeatures(features))
-        }
-        style.addSource(source)
-
-        val layer = lineLayer(layerId, sourceId) {
-            lineColor(Color.RED)
-            lineWidth(2.0)
-            lineCap(LineCap.Companion.ROUND)
-            lineJoin(LineJoin.Companion.ROUND)
-            lineOpacity(0.8)
-        }
-        style.addLayer(layer)
-    }
-
-    private fun setupFillLayer(
-        style: Style,
-        sourceId: String,
-        layerId: String,
-        features: List<Feature>
-    ) {
-        style.removeStyleLayer(layerId)
-        style.removeStyleSource(sourceId)
-
-        val source = geoJsonSource(sourceId) {
-            featureCollection(FeatureCollection.fromFeatures(features))
-        }
-        style.addSource(source)
-
-        val layer = fillLayer(fillLayerId, fillSourceId) {
-            fillColor(Color.YELLOW)
-            fillOpacity(0.3)
-            fillAntialias(true)
-        }
-        style.addLayer(layer)
-    }
-
-    fun clear() {
-
-    }
-}

android/src/main/res/layout-port/activity_main.xml

@@ -178,6 +178,13 @@
                 android:layout_height="wrap_content"
                 android:switchPadding="16dp"
                 android:text="显示设计面" />
+
+            <Switch
+                android:id="@+id/switch_slope_result"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:switchPadding="16dp"
+                android:text="显示计算的坡面" />
         </LinearLayout>
     </ScrollView>
 </LinearLayout>

android/src/main/res/layout/activity_main.xml

@@ -169,6 +169,13 @@
             android:layout_height="wrap_content"
             android:switchPadding="16dp"
             android:text="显示设计面" />
+
+        <Switch
+            android:id="@+id/switch_slope_result"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:switchPadding="16dp"
+            android:text="显示计算的坡面" />
     </LinearLayout>
 
     <com.mapbox.maps.MapView

android/src/test/java/com/icegps/geotools/TriangulationToGridTest.kt

@@ -0,0 +1,71 @@
+package com.icegps.geotools
+
+import com.icegps.geotools.ktx.area
+import com.icegps.geotools.ktx.niceStr
+import com.icegps.math.geometry.Vector3D
+import com.icegps.triangulation.delaunayTriangulation
+import org.junit.Test
+import kotlin.math.max
+
+/**
+ * @author tabidachinokaze
+ * @date 2025/11/26
+ */
+class TriangulationToGridTest {
+    @Test
+    fun testTriangulationToGrid() {
+        val points = listOf(
+            Vector3D(-10.0, 10.0, 0.0),
+            Vector3D(10.0, 10.0, 10.0),
+            Vector3D(-10.0, -10.0, 20.0),
+            Vector3D(10.0, -10.0, 30.0),
+        )
+        points.map {
+            it / 8
+        }.niceStr().let(::println)
+        val area = points.area
+        val cellSize = max(area.x + area.width, area.y + area.height) / 10
+        val triangulation = points.delaunayTriangulation()
+        val triangles = triangulation.triangles()
+        val grid = triangulationToGrid(
+            delaunator = triangulation,
+            cellSize = cellSize,
+        )
+        grid.string().let(::println)
+        val slopeResult = SlopeCalculator.calculateSlope(
+            grid = grid,
+            slopeDirection = 0.0,
+            slopePercentage = 100.0,
+            baseHeightOffset = 0.0
+        )
+        slopeResult.designSurface.string().let(::println)
+        println("原来的 Volume: ${grid.volumeSum()}")
+        println("做坡的 Volume: ${slopeResult.designSurface.volumeSum()}")
+        println(slopeResult.earthworkResult)
+    }
+}
+
+fun GridModel.string() = buildString {
+    for (r in 0 until rows) {
+        for (c in 0 until cols) {
+            val originalElev = getValue(r, c) ?: continue
+            append("${originalElev.format()}, ")
+        }
+        appendLine()
+    }
+}
+
+fun GridModel.volumeSum(): Double {
+    var volume = 0.0
+    for (r in 0 until rows) {
+        for (c in 0 until cols) {
+            val height = getValue(r, c) ?: continue
+            volume += height
+        }
+    }
+    return volume
+}
+
+fun Double.format(): String {
+    return "%.1f".format(this)
+}