Add a hotspot with event

[MahmoudBashir97]

Hi dear , I need to know how i can convert from the clicked touch event x,y to a panorama coordinates to add a new Hotspot in android kotlin , please if you can help!

[gouravide]

override fun onLongPress(e: MotionEvent) {

    val x = e.x
    val y = e.y
    val screenWidth = resources.displayMetrics.widthPixels
    val screenHeight = resources.displayMetrics.heightPixels
    val normalizedX = x / screenWidth
    val normalizedY = y / screenHeight

    addHotspotAt(normalizedX, normalizedY, screenWidth, screenHeight)
    Toast.makeText(this, "${normalizedX}, ${screenHeight}", Toast.LENGTH_SHORT).show()
}

private fun addHotspotAt(
    normalizedX: Float, normalizedY: Float, screenWidth: Int, screenHeight: Int
) {
    // These values would ideally come from your panorama viewer or camera settings
    val currentYaw = plManager.panorama.camera.yaw
    val currentPitch = plManager.panorama.camera.pitch
    val fov = plManager.panorama.camera.fov  // Current FOV considering zoom
    val aspectRatio = screenWidth.toFloat() / screenHeight

    // Convert normalized screen coordinates to changes in yaw and pitch
    val yawChange = (normalizedX - 0.5f) * fov
    val pitchChange = (0.5f - normalizedY) * (fov / aspectRatio)

    // Calculate new yaw and pitch for the hotspot
    val hotspotYaw = (currentYaw + yawChange) % 360
    val hotspotPitch = currentPitch + pitchChange
    // Ensure pitch stays within bounds [-90, 90]
    val clampedPitch = hotspotPitch.coerceIn(-90f, 90f)

    // Now, create your hotspot at this new yaw and pitch
    createHotspot(hotspotPitch = clampedPitch, hotspotYaw = hotspotYaw)
}

private fun createHotspot(hotspotPitch: Float, hotspotYaw: Float) {
    val hotspot = ActionPLHotspot(
        this,
        System.currentTimeMillis(),
        PLImage(BitmapFactory.decodeResource(resources, R.raw.hotspot)),
        hotspotPitch,
        hotspotYaw,
        PLConstants.kDefaultHotspotSize,
        PLConstants.kDefaultHotspotSize
    )
    plManager.panorama.addHotspot(hotspot)
}