public static CameraMatricesExpressions GetMatricesExpressions(IEnumerable <VFXNamedExpression> expressions, VFXCoordinateSpace cameraSpace, VFXCoordinateSpace outputSpace)
{
var fov = expressions.First(e => e.name == "Camera_fieldOfView");
var aspect = expressions.First(e => e.name == "Camera_aspectRatio");
var near = expressions.First(e => e.name == "Camera_nearPlane");
var far = expressions.First(e => e.name == "Camera_farPlane");
var cameraMatrix = expressions.First(e => e.name == "Camera_transform");
VFXExpression ViewToVFX = cameraMatrix.exp;
if (cameraSpace == VFXCoordinateSpace.World && outputSpace == VFXCoordinateSpace.Local)
{
ViewToVFX = new VFXExpressionTransformMatrix(VFXBuiltInExpression.WorldToLocal, cameraMatrix.exp);
}
else if (cameraSpace == VFXCoordinateSpace.Local && outputSpace == VFXCoordinateSpace.World)
{
ViewToVFX = new VFXExpressionTransformMatrix(VFXBuiltInExpression.LocalToWorld, cameraMatrix.exp);
}
VFXExpression VFXToView = new VFXExpressionInverseTRSMatrix(ViewToVFX);
VFXExpression ViewToClip = VFXOperatorUtility.GetPerspectiveMatrix(fov.exp, aspect.exp, near.exp, far.exp);
VFXExpression ClipToView = new VFXExpressionInverseMatrix(ViewToClip);
return(new CameraMatricesExpressions()
{
ViewToVFX = new VFXNamedExpression(ViewToVFX, "ViewToVFX"),
VFXToView = new VFXNamedExpression(VFXToView, "VFXToView"),
ViewToClip = new VFXNamedExpression(ViewToClip, "ViewToClip"),
ClipToView = new VFXNamedExpression(ClipToView, "ClipToView"),
});
}
public void ProcessExpressionInverseMatrix()
{
var t = new Vector3(0.2f, 0.3f, 0.4f);
var r = new Vector3(0.5f, 0.6f, 0.7f);
var s = new Vector3(0.8f, 0.9f, 1.0f);
var q = Quaternion.Euler(r);
Matrix4x4 inputMatrix = new Matrix4x4();
inputMatrix.SetTRS(t, q, s);
Matrix4x4 outputMatrix = inputMatrix.inverse;
var matrixExpression = VFXValue.Constant(inputMatrix);
var invMatrixExpressions = new VFXExpressionInverseMatrix(matrixExpression);
var context = new VFXExpression.Context(VFXExpressionContextOption.CPUEvaluation);
var resultExpression = context.Compile(invMatrixExpressions);
Assert.AreEqual(resultExpression.Get <Matrix4x4>(), outputMatrix);
}
public static CameraMatricesExpressions GetMatricesExpressions(IEnumerable <VFXNamedExpression> expressions)
{
var fov = expressions.First(e => e.name == "Camera_fieldOfView");
var aspect = expressions.First(e => e.name == "Camera_aspectRatio");
var near = expressions.First(e => e.name == "Camera_nearPlane");
var far = expressions.First(e => e.name == "Camera_farPlane");
var cameraMatrix = expressions.First(e => e.name == "Camera_transform");
VFXExpression ViewToVFX = cameraMatrix.exp;
VFXExpression VFXToView = new VFXExpressionInverseTRSMatrix(ViewToVFX);
VFXExpression ViewToClip = VFXOperatorUtility.GetPerspectiveMatrix(fov.exp, aspect.exp, near.exp, far.exp);
VFXExpression ClipToView = new VFXExpressionInverseMatrix(ViewToClip);
return(new CameraMatricesExpressions()
{
ViewToVFX = new VFXNamedExpression(ViewToVFX, "ViewToVFX"),
VFXToView = new VFXNamedExpression(VFXToView, "VFXToView"),
ViewToClip = new VFXNamedExpression(ViewToClip, "ViewToClip"),
ClipToView = new VFXNamedExpression(ClipToView, "ClipToView"),
});
}
