Display 3D buildings with 3D lights | Maps SDK | Android Docs

Extrude the building layer in the Mapbox Standard style and set up the light position.

Kotlin

Lights3DActivity.kt


package com.mapbox.maps.testapp.examples.terrain3D

import android.graphics.Color
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.mapbox.geojson.Point
import com.mapbox.maps.CameraOptions
import com.mapbox.maps.Style
import com.mapbox.maps.extension.style.light.generated.ambientLight
import com.mapbox.maps.extension.style.light.generated.directionalLight
import com.mapbox.maps.extension.style.light.setLight
import com.mapbox.maps.testapp.databinding.ActivityFillExtrusionBinding

/**
 * Extrude the building layer in the Mapbox Standard style
 * and set up the light position.
 */
class Lights3DActivity : AppCompatActivity() {

  private var isRedColor: Boolean = false
  private lateinit var binding: ActivityFillExtrusionBinding

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    binding = ActivityFillExtrusionBinding.inflate(layoutInflater)
    setContentView(binding.root)
    val mapboxMap = binding.mapView.mapboxMap
    mapboxMap.setCamera(
      CameraOptions.Builder()
        .center(Point.fromLngLat(24.943849, 60.171924))
        .bearing(-17.6)
        .pitch(45.0)
        .zoom(16.0)
        .build()
    )

    mapboxMap.loadStyle(
      Style.STANDARD
    ) { style ->
      setupLights3D(style)
    }
  }

  private fun setupLights3D(style: Style) {
    // setup 3d light
    val ambientLight = ambientLight(AMBIENT_LIGHT_ID) {
      color(Color.WHITE)
      intensity(0.5)
    }
    val directionalLight = directionalLight(DIRECTIONAL_LIGHT_ID) {
      color(Color.YELLOW)
      intensity(0.9)
      castShadows(true)
      direction(listOf(0.0, 15.0))
    }
    style.setLight(
      ambientLight,
      directionalLight,
    )
    // change color on fab click
    binding.fabLightColor.setOnClickListener {
      isRedColor = !isRedColor
      if (isRedColor) {
        ambientLight.color(Color.RED)
      } else {
        ambientLight.color(Color.WHITE)
      }
    }

    binding.fabLightPosition.setOnClickListener {
      directionalLight.direction(listOf(0.0, (directionalLight.direction!![1] + 5.0) % 90.0))
    }
  }

  private companion object {
    private const val AMBIENT_LIGHT_ID = "ambient_id"
    private const val DIRECTIONAL_LIGHT_ID = "directional_id"
  }
}

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