void PositionJavaPinButtonExample::Project (const Eegeo::Space::LatLongAltitude& location, Eegeo::v3& screenPosition)
{
//project a 3D Ecef location to the screen
Eegeo::m44 finalMatrix;
Eegeo::Camera::RenderCamera renderCamera(GetGlobeCameraController().GetRenderCamera());
Eegeo::m44::Mul (finalMatrix,
renderCamera.GetProjectionMatrix(),
renderCamera.GetViewMatrix());
Eegeo::v3 local = (location.ToECEF() - renderCamera.GetEcefLocation()).ToSingle();
Eegeo::v4 inVector(local, 1.0f);
// get clip space coords
Eegeo::v4 outVector = Eegeo::v4::Mul(inVector, finalMatrix);
// divide through by w to get normalized device space coords -- range [-1, 1]
screenPosition.SetX((outVector.GetX()/outVector.GetW()));
screenPosition.SetY((outVector.GetY()/outVector.GetW()));
screenPosition.SetZ((outVector.GetZ()/outVector.GetW()));
// transform from [-1, 1] to [0, 1]
screenPosition.SetX((screenPosition.GetX() + 1.0f) * 0.5f);
screenPosition.SetY(1.0f - ((screenPosition.GetY() + 1.0f) * 0.5f));
float viewport[] = {0, 0, renderCamera.GetViewportWidth(), renderCamera.GetViewportHeight()};
// transform from [0, 1] to screen coords.
screenPosition.SetX((screenPosition.GetX()*(viewport[2]-viewport[0])) + viewport[0]);
screenPosition.SetY((screenPosition.GetY()*(viewport[3]-viewport[1])) + viewport[1]);
}
void PositionJavaPinButtonExample::Draw()
{
//lazily create the pin button when we start drawing so it is not displayed on top of the loading screen
if(m_world.Initialising())
{
return;
}
else if(m_buttonID == 0)
{
CreateButton();
}
//get an env for the current thread
//
//AndroidSafeNativeThreadAttachment will detach the thread if required at the end of the method
AndroidSafeNativeThreadAttachment attached(m_nativeState);
JNIEnv* env = attached.envForThread;
//calculate a screen position for the pin based on an ECEF location
const Eegeo::Space::LatLongAltitude pinLocation = Eegeo::Space::LatLongAltitude::FromDegrees(37.7858,-122.401, 0.f);
Eegeo::v3 screenPosition;
Project(pinLocation, screenPosition);
//update the screen position of the pin using the cached update method on the cached object reference to
//the pin controller, using the parameters we have calculated and the handle to the pin created earlier
env->CallVoidMethod(
m_hudPinController,
m_updateLocationMethodId,
m_buttonID,
screenPosition.GetX(),
screenPosition.GetY()
);
}
void WorldPinsScaleController::GetScreenLocation(const WorldPinItemModel& worldPinItemModel,
Eegeo::v2& screenLocation,
const Eegeo::Camera::RenderCamera& renderCamera) const
{
Eegeo::dv3 ecefLocation;
m_worldPinsService.GetPinEcefAndScreenLocations(worldPinItemModel, ecefLocation, screenLocation);
Eegeo::v3 cameraLocal = (ecefLocation - renderCamera.GetEcefLocation()).ToSingle();
Eegeo::v3 screenPos;
renderCamera.Project(cameraLocal, screenPos);
screenLocation.Set(screenPos.GetX(), screenPos.GetY());
}
void BoundsVisualiser::Build(const Eegeo::v3& minExtents, const Eegeo::v3& maxExtents)
{
Vertex vertexBuffer[NumVerts];
u16 indexBuffer[NumIndices];
float minX = minExtents.GetX();
float minY = minExtents.GetY();
float minZ = minExtents.GetZ();
float maxX = maxExtents.GetX();
float maxY = maxExtents.GetY();
float maxZ = maxExtents.GetZ();
std::vector<Eegeo::v3> verts;
verts.push_back(Eegeo::v3(minX, minY, minZ));
verts.push_back(Eegeo::v3(minX, minY, maxZ));
verts.push_back(Eegeo::v3(minX, maxY, minZ));
verts.push_back(Eegeo::v3(minX, maxY, maxZ));
verts.push_back(Eegeo::v3(maxX, minY, minZ));
verts.push_back(Eegeo::v3(maxX, minY, maxZ));
verts.push_back(Eegeo::v3(maxX, maxY, minZ));
verts.push_back(Eegeo::v3(maxX, maxY, maxZ));
for(size_t i = 0; i < NumVerts; ++ i)
{
vertexBuffer[i].x = verts[i].GetX();
vertexBuffer[i].y = verts[i].GetY();
vertexBuffer[i].z = verts[i].GetZ();
}
indexBuffer[0] = 0;
indexBuffer[1] = 1;
indexBuffer[2] = 2;
indexBuffer[3] = 1;
indexBuffer[4] = 3;
indexBuffer[5] = 2;
indexBuffer[6] = 4;
indexBuffer[7] = 5;
indexBuffer[8] = 6;
indexBuffer[9] = 5;
indexBuffer[10] = 7;
indexBuffer[11] = 6;
indexBuffer[12] = 4;
indexBuffer[13] = 1;
indexBuffer[14] = 0;
indexBuffer[15] = 4;
indexBuffer[16] = 5;
indexBuffer[17] = 1;
indexBuffer[18] = 5;
indexBuffer[19] = 3;
indexBuffer[20] = 1;
indexBuffer[21] = 7;
indexBuffer[22] = 3;
indexBuffer[23] = 5;
indexBuffer[24] = 2;
indexBuffer[25] = 3;
indexBuffer[26] = 7;
indexBuffer[27] = 7;
indexBuffer[28] = 6;
indexBuffer[29] = 2;
indexBuffer[30] = 4;
indexBuffer[31] = 0;
indexBuffer[32] = 6;
indexBuffer[33] = 2;
indexBuffer[34] = 6;
indexBuffer[35] = 0;
InitMeshGLBuffers(vertexBuffer, indexBuffer);
}
