public void SignPrecedence()
{
var eq = new ImageFramework.Model.Equation.Equation("-1+2");
var hlsl = eq.GetHlslExpression();
var expected = $"(({NumberToken.ToHlsl(-1.0f)}*{NumberToken.ToHlsl(1.0f)})+{NumberToken.ToHlsl(2.0f)})";
Assert.AreEqual(expected, hlsl.Replace(" ", ""));
}
public void SignOperatorAndBrackets()
{
var eq = new ImageFramework.Model.Equation.Equation("1+0.4*-2");
var hlsl = eq.GetHlslExpression();
var expected =
$"({NumberToken.ToHlsl(1.0f)}+({NumberToken.ToHlsl(0.4f)}*({NumberToken.ToHlsl(-1.0f)}*{NumberToken.ToHlsl(2.0f)})))";
Assert.AreEqual(expected, hlsl.Replace(" ", ""));
}
public void PowTranslation()
{
// this should translate to the same expression
var eq = new ImageFramework.Model.Equation.Equation("red(I0)^2*0.1");
var eq2 = new ImageFramework.Model.Equation.Equation("pow(red(I0),2)*0.1");
var hlsl = eq.GetHlslExpression();
var hlsl2 = eq2.GetHlslExpression();
Assert.AreEqual(hlsl2, hlsl);
}
// equation should succeed
private void AssertSuccess(string formula)
{
try
{
var eq = new ImageFramework.Model.Equation.Equation(formula);
}
catch (Exception e)
{
Assert.Fail(e.Message);
}
}
// equation should fail
private void AssertThrow(string formula)
{
try
{
var eq = new ImageFramework.Model.Equation.Equation(formula);
}
catch (Exception)
{
return;
}
Assert.Fail("formula was invalid but passed");
}
private int GetMaxImage(string formula)
{
try
{
var eq = new ImageFramework.Model.Equation.Equation(formula);
return(eq.MaxImageId);
}
catch (Exception e)
{
Assert.Fail(e.Message);
return(-1);
}
}
// equation should scceed with result
private void AssertEquals(string formula, string result)
{
try
{
var eq = new ImageFramework.Model.Equation.Equation(formula);
var res = eq.GetHlslExpression();
Assert.IsTrue(res.Equals(result));
}
catch (Exception e)
{
Assert.Fail(e.Message);
}
}
public void OperatorPrecedence()
{
var eq = new ImageFramework.Model.Equation.Equation("(3-1)*0.4+1");
var hlsl = eq.GetHlslExpression();
var expected =
$"((({NumberToken.ToHlsl(3.0f)}-{NumberToken.ToHlsl(1.0f)})*{NumberToken.ToHlsl(0.4f)})+{NumberToken.ToHlsl(1.0f)})";
Assert.AreEqual(expected, hlsl.Replace(" ", ""));
eq = new ImageFramework.Model.Equation.Equation("1+0.4*(3-1)");
hlsl = eq.GetHlslExpression();
expected =
$"({NumberToken.ToHlsl(1.0f)}+({NumberToken.ToHlsl(0.4f)}*({NumberToken.ToHlsl(3.0f)}-{NumberToken.ToHlsl(1.0f)})))";
Assert.AreEqual(expected, hlsl.Replace(" ", ""));
}
