public override Vector3d2 DeformedToLocal(Vector3d2 deformedPt)
{
double l = deformedPt.Magnitude();
if (deformedPt.z >= Math.Abs(deformedPt.x) && deformedPt.z >= Math.Abs(deformedPt.y))
{
return(new Vector3d2(deformedPt.x / deformedPt.z * R, deformedPt.y / deformedPt.z * R, l - R));
}
if (deformedPt.z <= -Math.Abs(deformedPt.x) && deformedPt.z <= -Math.Abs(deformedPt.y))
{
return(new Vector3d2(double.PositiveInfinity, double.PositiveInfinity, double.PositiveInfinity));
}
if (deformedPt.y >= Math.Abs(deformedPt.x) && deformedPt.y >= Math.Abs(deformedPt.z))
{
return(new Vector3d2(deformedPt.x / deformedPt.y * R, (2.0 - deformedPt.z / deformedPt.y) * R, l - R));
}
if (deformedPt.y <= -Math.Abs(deformedPt.x) && deformedPt.y <= -Math.Abs(deformedPt.z))
{
return(new Vector3d2(-deformedPt.x / deformedPt.y * R, (-2.0 - deformedPt.z / deformedPt.y) * R, l - R));
}
if (deformedPt.x >= Math.Abs(deformedPt.y) && deformedPt.x >= Math.Abs(deformedPt.z))
{
return(new Vector3d2((2.0 - deformedPt.z / deformedPt.x) * R, deformedPt.y / deformedPt.x * R, l - R));
}
if (deformedPt.x <= -Math.Abs(deformedPt.y) && deformedPt.x <= -Math.Abs(deformedPt.z))
{
return(new Vector3d2((-2.0 - deformedPt.z / deformedPt.x) * R, -deformedPt.y / deformedPt.x * R, l - R));
}
//should never reach here
Debug.Log("Proland::SpericalDeformation::DeformToLocal - fail");
return(new Vector3d2());
}
public override Vector3d2 DeformedToLocal(Vector3d2 deformedPt)
{
double l = deformedPt.Magnitude();
if (deformedPt.z >= Math.Abs(deformedPt.x) && deformedPt.z >= Math.Abs(deformedPt.y)) {
return new Vector3d2(deformedPt.x / deformedPt.z * R, deformedPt.y / deformedPt.z * R, l - R);
}
if (deformedPt.z <= -Math.Abs(deformedPt.x) && deformedPt.z <= -Math.Abs(deformedPt.y)) {
return new Vector3d2(double.PositiveInfinity, double.PositiveInfinity, double.PositiveInfinity);
}
if (deformedPt.y >= Math.Abs(deformedPt.x) && deformedPt.y >= Math.Abs(deformedPt.z)) {
return new Vector3d2(deformedPt.x / deformedPt.y * R, (2.0 - deformedPt.z / deformedPt.y) * R, l - R);
}
if (deformedPt.y <= -Math.Abs(deformedPt.x) && deformedPt.y <= -Math.Abs(deformedPt.z)) {
return new Vector3d2(-deformedPt.x / deformedPt.y * R, (-2.0 - deformedPt.z / deformedPt.y) * R, l - R);
}
if (deformedPt.x >= Math.Abs(deformedPt.y) && deformedPt.x >= Math.Abs(deformedPt.z)) {
return new Vector3d2((2.0 - deformedPt.z / deformedPt.x) * R, deformedPt.y / deformedPt.x * R, l - R);
}
if (deformedPt.x <= -Math.Abs(deformedPt.y) && deformedPt.x <= -Math.Abs(deformedPt.z)) {
return new Vector3d2((-2.0 - deformedPt.z / deformedPt.x) * R, -deformedPt.y / deformedPt.x * R, l - R);
}
//should never reach here
Debug.Log("Proland::SpericalDeformation::DeformToLocal - fail");
return new Vector3d2();
}
public void updateCameraSpecificUniforms(Material oceanMaterial, Camera inCamera)
{
cameraToScreen = GL.GetGPUProjectionMatrix(inCamera.projectionMatrix, false);
screenToCamera = cameraToScreen.inverse;
m_oceanMaterial.SetMatrix("_Globals_CameraToScreen", cameraToScreen);
m_oceanMaterial.SetMatrix("_Globals_ScreenToCamera", screenToCamera);
//Calculates the required data for the projected grid
// compute ltoo = localToOcean transform, where ocean frame = tangent space at
// camera projection on sphere radius in local space
//move these to dedicated projected grid class?
Matrix4x4 ctol1 = inCamera.cameraToWorldMatrix;
Matrix4x4d cameraToWorld = new Matrix4x4d(ctol1.m00, ctol1.m01, ctol1.m02, ctol1.m03,
ctol1.m10, ctol1.m11, ctol1.m12, ctol1.m13,
ctol1.m20, ctol1.m21, ctol1.m22, ctol1.m23,
ctol1.m30, ctol1.m31, ctol1.m32, ctol1.m33);
Vector3d translation = m_manager.parentLocalTransform.position;
Matrix4x4d worldToLocal = new Matrix4x4d(1, 0, 0, -translation.x,
0, 1, 0, -translation.y,
0, 0, 1, -translation.z,
0, 0, 0, 1);
Matrix4x4d camToLocal = worldToLocal * cameraToWorld;
Matrix4x4d localToCam = camToLocal.Inverse();
// camera in local space relative to planet's origin
Vector3d2 cl = new Vector3d2();
cl = camToLocal * Vector3d2.Zero();
double radius = m_manager.GetRadius();
uz = cl.Normalized(); // unit z vector of ocean frame, in local space
if (m_oldlocalToOcean != Matrix4x4d.Identity())
{
ux = (new Vector3d2(m_oldlocalToOcean.m [1, 0], m_oldlocalToOcean.m [1, 1], m_oldlocalToOcean.m [1, 2])).Cross(uz).Normalized();
}
else
{
ux = Vector3d2.UnitZ().Cross(uz).Normalized();
}
uy = uz.Cross(ux); // unit y vector
oo = uz * (radius); // origin of ocean frame, in local space
//local to ocean transform
//computed from oo and ux, uy, uz should be correct
Matrix4x4d localToOcean = new Matrix4x4d(
ux.x, ux.y, ux.z, -ux.Dot(oo),
uy.x, uy.y, uy.z, -uy.Dot(oo),
uz.x, uz.y, uz.z, -uz.Dot(oo),
0.0, 0.0, 0.0, 1.0);
Matrix4x4d cameraToOcean = localToOcean * camToLocal;
Matrix4x4d worldToOcean = localToOcean * worldToLocal;
Vector3d2 delta = new Vector3d2(0, 0, 0);
if (m_oldlocalToOcean != Matrix4x4d.Identity())
{
delta = localToOcean * (m_oldlocalToOcean.Inverse() * Vector3d2.Zero());
m_offset += delta;
}
//reset offset when bigger than 20000 to avoid floating point issues when later casting the offset to float
if (Mathf.Max(Mathf.Abs((float)m_offset.x), Mathf.Abs((float)m_offset.y)) > 20000f)
{
m_offset.x = 0.0;
m_offset.y = 0.0;
}
m_oldlocalToOcean = localToOcean;
// Matrix4x4d ctos = ModifiedProjectionMatrix (inCamera); //moved to command buffer
// Matrix4x4d stoc = ctos.Inverse ();
Vector3d2 oc = cameraToOcean * Vector3d2.Zero();
h = oc.z;
offset = new Vector3d2(-m_offset.x, -m_offset.y, h);
//old horizon code
//This breaks down when you tilt the camera by 90 degrees in any direction
//I made some new horizon code down, scroll down
// Vector4d stoc_w = (stoc * Vector4d.UnitW ()).XYZ0 ();
// Vector4d stoc_x = (stoc * Vector4d.UnitX ()).XYZ0 ();
// Vector4d stoc_y = (stoc * Vector4d.UnitY ()).XYZ0 ();
//
// Vector3d2 A0 = (cameraToOcean * stoc_w).XYZ ();
// Vector3d2 dA = (cameraToOcean * stoc_x).XYZ ();
// Vector3d2 B = (cameraToOcean * stoc_y).XYZ ();
//
// Vector3d2 horizon1, horizon2;
//
// double h1 = h * (h + 2.0 * radius);
// double h2 = (h + radius) * (h + radius);
// double alpha = B.Dot (B) * h1 - B.z * B.z * h2;
//
// double beta0 = (A0.Dot (B) * h1 - B.z * A0.z * h2) / alpha;
// double beta1 = (dA.Dot (B) * h1 - B.z * dA.z * h2) / alpha;
//
// double gamma0 = (A0.Dot (A0) * h1 - A0.z * A0.z * h2) / alpha;
// double gamma1 = (A0.Dot (dA) * h1 - A0.z * dA.z * h2) / alpha;
// double gamma2 = (dA.Dot (dA) * h1 - dA.z * dA.z * h2) / alpha;
//
// horizon1 = new Vector3d2 (-beta0, -beta1, 0.0);
// horizon2 = new Vector3d2 (beta0 * beta0 - gamma0, 2.0 * (beta0 * beta1 - gamma1), beta1 * beta1 - gamma2);
Vector3d2 sunDir = new Vector3d2(m_manager.getDirectionToSun().normalized);
Vector3d2 oceanSunDir = localToOcean.ToMatrix3x3d() * sunDir;
oceanMaterial.SetMatrix(ShaderProperties._Globals_CameraToWorld_PROPERTY, cameraToWorld.ToMatrix4x4());
oceanMaterial.SetVector(ShaderProperties._Ocean_SunDir_PROPERTY, oceanSunDir.ToVector3());
oceanMaterial.SetMatrix(ShaderProperties._Ocean_CameraToOcean_PROPERTY, cameraToOcean.ToMatrix4x4());
oceanMaterial.SetMatrix(ShaderProperties._Ocean_OceanToCamera_PROPERTY, cameraToOcean.Inverse().ToMatrix4x4());
// oceanMaterial.SetMatrix (ShaderProperties._Globals_CameraToScreen_PROPERTY, ctos.ToMatrix4x4 ());
// oceanMaterial.SetMatrix (ShaderProperties._Globals_ScreenToCamera_PROPERTY, stoc.ToMatrix4x4 ());
oceanMaterial.SetMatrix(ShaderProperties._Globals_WorldToOcean_PROPERTY, worldToOcean.ToMatrix4x4());
oceanMaterial.SetMatrix(ShaderProperties._Globals_OceanToWorld_PROPERTY, worldToOcean.Inverse().ToMatrix4x4());
oceanMaterial.SetVector(ShaderProperties._Ocean_CameraPos_PROPERTY, offset.ToVector3());
//horizon calculations
//these are used to find where the horizon line is on screen
//and "clamp" vertexes that are above it back to it
//as the grid is projected on the whole screen, vertexes over the horizon need to be dealt with
//simply passing a flag to drop fragments or moving these vertexes offscreen will cause issues
//as the horizon line can be between two vertexes and the horizon line will appear "pixelated"
//as whole chunks go missing
//these need to be done here
//1)for double precision
//2)for speed
Vector3d2 sphereDir = localToCam * Vector3d2.Zero(); //vector to center of planet
double OHL = sphereDir.Magnitude(); //distance to center of planet
sphereDir = sphereDir.Normalized(); //direction to center of planet
double rHorizon = Math.Sqrt((OHL)*(OHL)-(radius * radius)); //distance to the horizon, i.e distance to ocean sphere tangent
//basic geometry yo
//Theta=angle to horizon, now all that is left to do is check the viewdir against this angle in the shader
double cosTheta = rHorizon / (OHL);
double sinTheta = Math.Sqrt(1 - cosTheta * cosTheta);
oceanMaterial.SetVector(ShaderProperties.sphereDir_PROPERTY, sphereDir.ToVector3());
oceanMaterial.SetFloat(ShaderProperties.cosTheta_PROPERTY, (float)cosTheta);
oceanMaterial.SetFloat(ShaderProperties.sinTheta_PROPERTY, (float)sinTheta);
//planetshine properties
if (Scatterer.Instance.mainSettings.usePlanetShine)
{
Matrix4x4 planetShineSourcesMatrix = m_manager.m_skyNode.planetShineSourcesMatrix;
Vector3d2 oceanSunDir2;
for (int i = 0; i < 4; i++)
{
Vector4 row = planetShineSourcesMatrix.GetRow(i);
oceanSunDir2 = localToOcean.ToMatrix3x3d() * new Vector3d2(row.x, row.y, row.z);
planetShineSourcesMatrix.SetRow(i, new Vector4((float)oceanSunDir2.x, (float)oceanSunDir2.y, (float)oceanSunDir2.z, row.w));
}
oceanMaterial.SetMatrix("planetShineSources", planetShineSourcesMatrix); //this can become shared code to not recompute
oceanMaterial.SetMatrix("planetShineRGB", m_manager.m_skyNode.planetShineRGBMatrix);
}
if (!ReferenceEquals(causticsShadowMaskModulator, null))
{
causticsShadowMaskModulator.CausticsShadowMaskModulateMaterial.SetMatrix("CameraToWorld", inCamera.cameraToWorldMatrix);
causticsShadowMaskModulator.CausticsShadowMaskModulateMaterial.SetMatrix("WorldToLight", Scatterer.Instance.sunLight.transform.worldToLocalMatrix);
causticsShadowMaskModulator.CausticsShadowMaskModulateMaterial.SetVector("PlanetOrigin", m_manager.parentLocalTransform.position);
float warpTime = (TimeWarp.CurrentRate > 1) ? (float)Planetarium.GetUniversalTime() : 0f;
causticsShadowMaskModulator.CausticsShadowMaskModulateMaterial.SetFloat("warpTime", warpTime);
}
}
