bool PoiRingTouchController::HandleTouchMove(const AppInterface::TouchData &data, const Eegeo::Camera::RenderCamera &renderCamera, const Eegeo::dv3& nonFlattenedCameraPosition)
{
if (m_myPinCreationModel.GetCreationStage() != Ring)
{
return false;
}
if (m_isDragging)
{
float screenPixelX = data.point.GetX();
float screenPixelY = data.point.GetY();
Eegeo::dv3 rayDirection;
Eegeo::Camera::CameraHelpers::GetScreenPickRay(renderCamera, screenPixelX, screenPixelY, rayDirection);
Eegeo::dv3 rayOrigin = nonFlattenedCameraPosition;
Eegeo::dv3 rayIntersectionPoint;
double intersectionParam;
float terrainHeight;
float heightAboveTerrain;
bool rayPick = PerformRayPick(rayOrigin, rayDirection, rayIntersectionPoint, intersectionParam, terrainHeight, heightAboveTerrain);
if (rayPick)
{
const float currentCameraAltitiude = renderCamera.GetAltitude();
float offsetScale = 0.0f;
if(currentCameraAltitiude != 0.0f && m_initialCameraAltitiude != 0.0f)
{
offsetScale = currentCameraAltitiude /m_initialCameraAltitiude;
}
Eegeo::Space::LatLong latLong = Eegeo::Space::LatLong::FromECEF(rayIntersectionPoint - (m_dragOffset * offsetScale));
m_myPinCreationModel.SetLatLong(latLong);
m_myPinCreationModel.SetTerrainHeight(terrainHeight);
m_myPinCreationModel.SetHeightAboveTerrain(heightAboveTerrain);
}
return true;
}
return false;
}
bool PoiRingTouchController::TouchDownRaycast(const AppInterface::TouchData &data,
const Eegeo::Camera::RenderCamera &renderCamera,
const Eegeo::dv3 &rayOrigin)
{
float screenPixelX = data.point.GetX();
float screenPixelY = data.point.GetY();
Eegeo::dv3 rayDirection;
Eegeo::Camera::CameraHelpers::GetScreenPickRay(renderCamera, screenPixelX, screenPixelY, rayDirection);
Eegeo::dv3 rayIntersectionPoint;
double intersectionParam;
float terrainHeight;
float heightAboveTerrain;
bool rayPick = PerformRayPick(rayOrigin, rayDirection, rayIntersectionPoint, intersectionParam, terrainHeight, heightAboveTerrain);
if (rayPick)
{
Eegeo::dv3 iconPosition;
float iconSize;
m_poiRingController.GetIconPositionAndSize(iconPosition, iconSize);
Eegeo::dv3 spherePosition;
float sphereRadius;
m_poiRingController.GetSpherePositionAndRadius(spherePosition, sphereRadius);
m_initialCameraAltitiude = renderCamera.GetAltitude();
bool hitIcon = Eegeo::Geometry::IntersectionTests::TestRaySphere(rayOrigin, rayDirection, iconPosition, iconSize/2.0f);
if ((rayIntersectionPoint - spherePosition).Length() < sphereRadius || hitIcon)
{
m_dragOffset = rayIntersectionPoint - spherePosition;
m_isDragging = true;
return true;
}
}
return false;
}