/// <summary>
/// Builds marble geometry
/// </summary>
private void BuildGeometry( Units.Metres radius )
{
DestroyGeometry( );
Graphics.Draw.StartCache( );
Graphics.Draw.Sphere( null, Point3.Origin, ( float )radius.ToAstroRenderUnits, 20, 20 );
m_Geometry = Graphics.Draw.StopCache( );
m_GeometryRadius = radius;
}
/// <summary>
/// Sets the default camera position above a planet
/// </summary>
/// <param name="camera"></param>
protected override void SetDefaultCameraPosition( IUniCamera camera )
{
// Move the camera up to the surface of the planet
Units.Metres cameraHeight;
IPlanetTerrainModel terrain = Planet.Model.GetModel<IPlanetTerrainModel>( );
if ( terrain != null )
{
cameraHeight = terrain.MaximumHeight;
}
else
{
cameraHeight = new Units.Metres( 1000 );
}
cameraHeight += m_Planet.Model.Radius;
camera.Position.Set( cameraHeight.ToUniUnits, 0, 0 );
}
/// <summary>
/// Rebuilds the ring goemetry
/// </summary>
private bool RebuildRingGeometry( )
{
DestroyVertices( );
ISpherePlanetRingModel model = Planet.Model.GetModel<ISpherePlanetRingModel>( );
if ( model == null )
{
return false;
}
int subdivisionCount = 256;
List<RingVertex> vertices = new List<RingVertex>( );
m_BuildInnerRadius = model.InnerRadius;
m_BuildWidth = model.Width;
float innerRadius = ( float )model.InnerRadius.ToAstroRenderUnits;
float outerRadius = ( float )( model.InnerRadius + model.Width ).ToAstroRenderUnits;
float angle = 0;
float angleInc = Constants.TwoPi / ( subdivisionCount - 1 );
bool toggle = false;
for ( int subdivision = 0; subdivision < subdivisionCount; ++subdivision )
{
float x = Functions.Sin( angle );
float y = 0;
float z = Functions.Cos( angle );
vertices.Add( new RingVertex( x * innerRadius, y * innerRadius, z * innerRadius, toggle ? 0 : 1, 0 ) );
vertices.Add( new RingVertex( x * outerRadius, y * outerRadius, z * outerRadius, toggle ? 0 : 1, 1 ) );
toggle = !toggle;
angle += angleInc;
}
m_Vertices = Graphics.Factory.CreateVertexBuffer( );
m_Vertices.Create( vertices.ToArray( ) );
return true;
}
/// <summary>
/// Setup constructor
/// </summary>
/// <param name="oldRadius">Old radius</param>
/// <param name="newRadius">New radius</param>
public RadiusChangedEventArgs( Units.Metres oldRadius, Units.Metres newRadius )
{
m_OldRadius = oldRadius;
m_NewRadius = newRadius;
}
/// <summary>
/// Creates a cloud shell renderable from a cloud model
/// </summary>
private void BuildCloudShell( IPlanetSimpleCloudModel simpleCloudModel )
{
DestroyCloudShell( );
m_BuildRadius = ( simpleCloudModel.CloudLayerHeight + Planet.Model.Radius );
Graphics.Draw.StartCache( );
Graphics.Draw.Sphere( null, Point3.Origin, m_BuildRadius.ToRenderUnits, 50, 50 );
m_CloudShell = Graphics.Draw.StopCache( );
}
/// <summary>
/// Creates cloud sphere geometry
/// </summary>
private IRenderable CreateCloudSphere( )
{
m_BuildRadius = SpherePlanet.PlanetModel.Radius + SpherePlanet.PlanetModel.CloudModel.CloudLayerMinHeight;
float radius = m_BuildRadius.ToRenderUnits;
Graphics.Draw.StartCache( );
Graphics.Draw.Sphere( null, Point3.Origin, radius, 50, 50 );
return Graphics.Draw.StopCache( );
}
/// <summary>
/// Creates the camera used by the main display
/// </summary>
private ICamera CreateCamera( ICommandUser user )
{
FirstPersonCamera camera = new FirstPersonCamera( );
camera.PerspectiveZNear = 1.0f;
camera.PerspectiveZFar = 15000.0f;
Units.Metres cameraPos = BuilderState.Instance.SpherePlanet.PlanetModel.Radius;
if ( BuilderState.Instance.SpherePlanet.PlanetModel.TerrainModel != null )
{
cameraPos += BuilderState.Instance.SpherePlanet.PlanetModel.TerrainModel.MaximumHeight;
}
else
{
cameraPos += new Units.Metres( 1000000 );
}
camera.Position = new UniPoint3( cameraPos.ToUniUnits, 0, 0 );
new FirstPersonCameraController( user, camera );
testDisplay.OnBeginRender += delegate { InteractionUpdateTimer.Instance.OnUpdate( ); };
CommandControlInputSource.StartMonitoring( user, testDisplay, FirstPersonCameraCommands.DefaultBindings );
return camera;
}
/// <summary>
/// Creates a geo sphere
/// </summary>
private IRenderable CreateGeoSphere( Units.Metres radius, int subdivisions )
{
m_GeometryRadius = radius;
Vector3[] sideNormals = new Vector3[ 6 ]
{
new Vector3( 1, 0, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),
new Vector3( -1, 0, 0 ), new Vector3( 0, -1, 0 ), new Vector3( 0, 0, -1 )
};
VertexBufferFormat format = new VertexBufferFormat( );
format.Add<float>( VertexFieldSemantic.Position, 3 );
format.Add<float>( VertexFieldSemantic.Normal, 3 );
format.Add<float>( VertexFieldSemantic.Texture0, 2 );
float renderRadius = radius.ToRenderUnits;
float modelSideLength = 10.0f;
float uvMul = 1.0f / subdivisions;
VertexBufferBuilder vbBuilder = new VertexBufferBuilder( format );
for ( int sideNormalIndex = 0; sideNormalIndex < sideNormals.Length; ++sideNormalIndex )
{
Vector3 sideNormal = sideNormals[ sideNormalIndex ];
Vector3 xAxis = sideNormals[ ( sideNormalIndex + 1 ) % sideNormals.Length ];
Vector3 yAxis = sideNormals[ ( sideNormalIndex + 2 ) % sideNormals.Length ];
Vector3 xStride = xAxis * modelSideLength;
Vector3 yStride = yAxis * modelSideLength;
Vector3 xStep = xStride / subdivisions;
Vector3 yStep = yStride / subdivisions;
Point3 mid = Point3.Origin + sideNormal * modelSideLength / 2;
Point3 topLeft = mid - ( xStride / 2 ) - ( yStride / 2 );
Point3 sidePos = topLeft;
for ( int y = 0; y < subdivisions; ++y )
{
Point3 curPos = sidePos;
float v = y * uvMul;
float nV = ( y + 1 ) * uvMul;
for ( int x = 0; x < subdivisions; ++x )
{
Vector3 sphereNormal = curPos.ToVector3( ).MakeNormal( );
Vector3 sphereNxNormal = ( curPos + xStep ).ToVector3( ).MakeNormal( );
Vector3 sphereNyNormal = ( curPos + yStep ).ToVector3( ).MakeNormal( );
Vector3 sphereNxNyNormal = ( curPos + xStep + yStep ).ToVector3( ).MakeNormal( );
Point3 spherePos = ( sphereNormal * renderRadius ).ToPoint3( );
Point3 sphereNxPos = ( sphereNxNormal * renderRadius ).ToPoint3( );
Point3 sphereNyPos = ( sphereNyNormal * renderRadius ).ToPoint3( );
Point3 sphereNxNyPos = ( sphereNxNyNormal * renderRadius ).ToPoint3( );
float u = x * uvMul;
float nU = ( x + 1 ) * uvMul;
vbBuilder.Add( VertexFieldSemantic.Position, spherePos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, u, v );
vbBuilder.Add( VertexFieldSemantic.Position, sphereNxPos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNxNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, nU, v );
vbBuilder.Add( VertexFieldSemantic.Position, sphereNyPos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNyNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, u, nV );
vbBuilder.Add( VertexFieldSemantic.Position, sphereNxPos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNxNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, nU, v );
vbBuilder.Add( VertexFieldSemantic.Position, sphereNxNyPos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNxNyNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, nU, nV );
vbBuilder.Add( VertexFieldSemantic.Position, sphereNyPos );
vbBuilder.Add( VertexFieldSemantic.Normal, sphereNyNormal );
vbBuilder.Add( VertexFieldSemantic.Texture0, u, nV );
curPos += xStep;
}
sidePos += yStep;
}
}
return new VertexBufferRenderer( vbBuilder.Build( ), PrimitiveType.TriList );
}
/// <summary>
/// Setup constructor
/// </summary>
public SpherePlanetRingModel( Units.Metres innerRadius, Units.Metres width )
{
m_InnerRadius = innerRadius;
Width = width;
}
private void radiusRangeSlider_ValueChanged( object sender, System.EventArgs e )
{
if ( ModelRadiusChanged != null )
{
Units.Metres radius = new Units.Metres( ( double )radiusRangeSlider.Value * 1000.0 );
ModelRadiusChanged( radius );
}
}