/// <summary>
/// 把连续4个float值按照列优先的顺序转换为mat2
/// </summary>
/// <param name="values"></param>
/// <param name="startIndex"></param>
/// <returns></returns>
public static mat2 ToMat2(this float[] values, int startIndex = 0)
{
mat2 result = new mat2(
values.ToVec2(startIndex + 0), values.ToVec2(startIndex + 2));
return(result);
}
/// <summary>
/// 把连续4个float值按照列优先的顺序转换为mat2
/// </summary>
/// <param name="values"></param>
/// <param name="startIndex"></param>
/// <returns></returns>
public static mat2 ToMat2(this float[] values, int startIndex = 0)
{
mat2 result = new mat2(
values.ToVec2(startIndex + 0), values.ToVec2(startIndex + 2));
return result;
}
/// <summary>
/// Multiplies the <paramref name="lhs"/> matrix by the <paramref name="rhs"/> matrix.
/// </summary>
/// <param name="lhs">The LHS matrix.</param>
/// <param name="rhs">The RHS matrix.</param>
/// <returns>The product of <paramref name="lhs"/> and <paramref name="rhs"/>.</returns>
public static mat2 operator *(mat2 lhs, mat2 rhs)
{
mat2 result = new mat2(
new vec2(
lhs[0][0] * rhs[0][0] + lhs[1][0] * rhs[0][1],
lhs[0][1] * rhs[0][0] + lhs[1][1] * rhs[0][1]
),
new vec2(
lhs[0][0] * rhs[1][0] + lhs[1][0] * rhs[1][1],
lhs[0][1] * rhs[1][0] + lhs[1][1] * rhs[1][1]
)
);
return(result);
}
public bool GetUniformMat2ArrayValue(string varNameInShader, out mat2[] value)
{
value = null;
bool gotUniform = false;
foreach (var item in this.uniformVariables)
{
if (item.VarName == varNameInShader)
{
value = (item as UniformMat2Array).Value;
gotUniform = true;
break;
}
}
return gotUniform;
}
/// <summary>
///
/// </summary>
/// <param name="varNameInShader"></param>
/// <param name="value"></param>
/// <returns></returns>
public bool GetUniformMat2ArrayValue(string varNameInShader, out mat2[] value)
{
//if ((!this.Initialized) && (!this.Initializing)) { this.Initialize(); }
value = null;
bool gotUniform = false;
foreach (UniformVariable item in this.uniformVariables)
{
if (item.VarName == varNameInShader)
{
value = (item as UniformMat2Array).Value.Array;
gotUniform = true;
break;
}
}
return gotUniform;
}
internal override bool SetValue(ValueType value)
{
if (value.GetType() != typeof(mat2))
{
throw new ArgumentException(string.Format("[{0}] not match [{1}]'s value.",
value.GetType().Name, this.GetType().Name));
}
var v = (mat2)value;
if (v != this.value)
{
this.value = v;
this.Updated = true;
return(true);
}
else
{
return(false);
}
}
public bool SetUniform(string varNameInShader, mat2[] value)
{
bool gotUniform = false;
bool updated = false;
if (value.Length <= 0) { return updated; }
foreach (var item in this.uniformVariables)
{
if (item.VarName == varNameInShader)
{
(item as UniformMat2Array).Value = value;
updated = true;
gotUniform = true;
break;
}
}
if (!gotUniform)
{
int location = ShaderProgram.GetUniformLocation(varNameInShader);
if (location < 0)
{
throw new Exception(string.Format(
"uniform variable [{0}] not exists!", varNameInShader));
}
var variable = GetVariableArray(value, varNameInShader) as UniformMat2Array;
variable.Value = value;
this.uniformVariables.Add(variable);
updated = true;
}
return updated;
}
/// <summary>
/// Multiplies the <paramref name="lhs"/> matrix by the <paramref name="rhs"/> matrix.
/// </summary>
/// <param name="lhs">The LHS matrix.</param>
/// <param name="rhs">The RHS matrix.</param>
/// <returns>The product of <paramref name="lhs"/> and <paramref name="rhs"/>.</returns>
public static mat2 operator *(mat2 lhs, mat2 rhs)
{
mat2 result = new mat2(
new vec2(
lhs[0][0] * rhs[0][0] + lhs[1][0] * rhs[0][1],
lhs[0][1] * rhs[0][0] + lhs[1][1] * rhs[0][1]
),
new vec2(
lhs[0][0] * rhs[1][0] + lhs[1][0] * rhs[1][1],
lhs[0][1] * rhs[1][0] + lhs[1][1] * rhs[1][1]
)
);
return result;
}
/// <summary>
///
/// </summary>
/// <param name="varNameInShader"></param>
/// <param name="value"></param>
/// <returns></returns>
public bool SetUniform(string varNameInShader, mat2[] value)
{
//if ((!this.Initialized) && (!this.Initializing)) { this.Initialize(); }
bool gotUniform = false;
bool updated = false;
if (value.Length <= 0) { return updated; }
foreach (UniformVariable item in this.uniformVariables)
{
if (item.VarName == varNameInShader)
{
(item as UniformMat2Array).Value = new NoisyArray<mat2>(value);
updated = true;
gotUniform = true;
break;
}
}
if (!gotUniform)
{
//int location = Program.GetUniformLocation(varNameInShader);
//if (location < 0)
{
//throw new Exception(string.Format(
//"niform variable [{0}] not exists! Remember to invoke RendererBase.Initialize(); before this method.", varNameInShader));
}
var variable = GetVariableArray(value, varNameInShader) as UniformMat2Array;
variable.Value = new NoisyArray<mat2>(value);
this.uniformVariables.Add(variable);
updated = true;
}
return updated;
}
