void EditorCamera::mainLoop()
{
if (mRenderCamera == NULL)
return;
mVerticalAngle = mClampF(mVerticalAngle, -4.7f, -1.7f);
VectorF rotation = mTransform.getRotationEuler();
rotation.y = mVerticalAngle;
rotation.z = mHorizontalAngle;
mTransform.setRotation(rotation);
VectorF up(0.0f, 0.0f, 1.0f);
Point3F look;
Point3F cameraForward(1.0f, 0.0f, 0.0f);
bx::vec3MulMtx(look, cameraForward, mTransform.matrix);
if (mForwardVelocity.len() > 0.01f)
{
MatrixF lookMatrix;
bx::mtxLookAt(lookMatrix, mWorldPosition, look, up);
mWorldPosition += (lookMatrix.getForwardVector() * mForwardVelocity.x);
mWorldPosition -= (lookMatrix.getRightVector() * mForwardVelocity.y);
mTransform.setPosition(mWorldPosition);
}
bx::vec3MulMtx(look, cameraForward, mTransform.matrix);
bx::mtxLookAt(mRenderCamera->viewMatrix, mWorldPosition, look, up);
mRenderCamera->position = mWorldPosition;
}
void OrientedBox3F::set( const MatrixF& transform, const Point3F& extents )
{
mCenter = transform.getPosition();
mAxes[ RightVector ] = transform.getRightVector();
mAxes[ ForwardVector ] = transform.getForwardVector();
mAxes[ UpVector ] = transform.getUpVector();
mHalfExtents = extents * 0.5f;
_initPoints();
}
void OrientedBox3F::set( const MatrixF& transform, const Box3F& aabb )
{
mCenter = aabb.getCenter();
transform.mulP( mCenter );
mAxes[ RightVector ] = transform.getRightVector();
mAxes[ ForwardVector ] = transform.getForwardVector();
mAxes[ UpVector ] = transform.getUpVector();
mHalfExtents[ 0 ] = aabb.len_x() / 2.f;
mHalfExtents[ 1 ] = aabb.len_y() / 2.f;
mHalfExtents[ 2 ] = aabb.len_z() / 2.f;
_initPoints();
}
void AdvancedLightBinManager::_setupPerFrameParameters( const SceneRenderState *state )
{
PROFILE_SCOPE( AdvancedLightBinManager_SetupPerFrameParameters );
const Frustum &frustum = state->getCameraFrustum();
MatrixF invCam( frustum.getTransform() );
invCam.inverse();
const Point3F *wsFrustumPoints = frustum.getPoints();
const Point3F& cameraPos = frustum.getPosition();
// Perform a camera offset. We need to manually perform this offset on the sun (or vector) light's
// polygon, which is at the far plane.
const Point2F& projOffset = frustum.getProjectionOffset();
Point3F cameraOffsetPos = cameraPos;
if(!projOffset.isZero())
{
// First we need to calculate the offset at the near plane. The projOffset
// given above can be thought of a percent as it ranges from 0..1 (or 0..-1).
F32 nearOffset = frustum.getNearRight() * projOffset.x;
// Now given the near plane distance from the camera we can solve the right
// triangle and calcuate the SIN theta for the offset at the near plane.
// SIN theta = x/y
F32 sinTheta = nearOffset / frustum.getNearDist();
// Finally, we can calcuate the offset at the far plane, which is where our sun (or vector)
// light's polygon is drawn.
F32 farOffset = frustum.getFarDist() * sinTheta;
// We can now apply this far plane offset to the far plane itself, which then compensates
// for the project offset.
MatrixF camTrans = frustum.getTransform();
VectorF offset = camTrans.getRightVector();
offset *= farOffset;
cameraOffsetPos += offset;
}
// Now build the quad for drawing full-screen vector light
// passes.... this is a volatile VB and updates every frame.
FarFrustumQuadVert verts[4];
{
verts[0].point.set( wsFrustumPoints[Frustum::FarBottomLeft] - cameraPos );
invCam.mulP( wsFrustumPoints[Frustum::FarBottomLeft], &verts[0].normal );
verts[0].texCoord.set( -1.0, -1.0 );
verts[0].tangent.set(wsFrustumPoints[Frustum::FarBottomLeft] - cameraOffsetPos);
verts[1].point.set( wsFrustumPoints[Frustum::FarTopLeft] - cameraPos );
invCam.mulP( wsFrustumPoints[Frustum::FarTopLeft], &verts[1].normal );
verts[1].texCoord.set( -1.0, 1.0 );
verts[1].tangent.set(wsFrustumPoints[Frustum::FarTopLeft] - cameraOffsetPos);
verts[2].point.set( wsFrustumPoints[Frustum::FarTopRight] - cameraPos );
invCam.mulP( wsFrustumPoints[Frustum::FarTopRight], &verts[2].normal );
verts[2].texCoord.set( 1.0, 1.0 );
verts[2].tangent.set(wsFrustumPoints[Frustum::FarTopRight] - cameraOffsetPos);
verts[3].point.set( wsFrustumPoints[Frustum::FarBottomRight] - cameraPos );
invCam.mulP( wsFrustumPoints[Frustum::FarBottomRight], &verts[3].normal );
verts[3].texCoord.set( 1.0, -1.0 );
verts[3].tangent.set(wsFrustumPoints[Frustum::FarBottomRight] - cameraOffsetPos);
}
mFarFrustumQuadVerts.set( GFX, 4 );
dMemcpy( mFarFrustumQuadVerts.lock(), verts, sizeof( verts ) );
mFarFrustumQuadVerts.unlock();
PlaneF farPlane(wsFrustumPoints[Frustum::FarBottomLeft], wsFrustumPoints[Frustum::FarTopLeft], wsFrustumPoints[Frustum::FarTopRight]);
PlaneF vsFarPlane(verts[0].normal, verts[1].normal, verts[2].normal);
// Parameters calculated, assign them to the materials
LightMatTable::Iterator iter = mLightMaterials.begin();
for ( ; iter != mLightMaterials.end(); iter++ )
{
if ( iter->value )
iter->value->setViewParameters( frustum.getNearDist(),
frustum.getFarDist(),
frustum.getPosition(),
farPlane,
vsFarPlane);
}
}
