Declarations

function Reflect(Value, Max: Integer): Integer; overload;
function Reflect(Value, Min, Max: Integer): Integer; overload;

Overload Details

Overload 1

function Reflect(Value, Max: Integer): Integer; overload;

Reflects an integer value in range [0..Max].

Parameter	Type	Description
Value	Integer	Integer value to reflect.
Max	Integer	Inclusive upper bound.

Type	Description
Integer	Reflected integer coordinate in range [0..Max].

Overload 2

function Reflect(Value, Min, Max: Integer): Integer; overload;

Reflects an integer value in range [Min..Max].

Parameter	Type	Description
Value	Integer	Integer value to reflect.
Min	Integer	Inclusive lower bound.
Max	Integer	Inclusive upper bound.

Type	Description
Integer	Reflected integer coordinate in range [Min..Max].

Description

Reflect constrains Value to range [0..Max] (or [Min..Max]) using symmetry around the outer edge of boundary pixels (cycle length $2\times (\text{Max}+1)$).

For example, for Max = 3, the sequence of values generated across coordinate space is: 0, 1, 2, 3, 3, 2, 1, 0, 0, 1, 2, 3, 3, 2, 1, 0.

See also

• ReflectPow2
• Mirror
• Wrap
• Clamp