Math¶

function Distance(const X1, Y1, X2, Y2: Double): Double;

function Distance(const P1, P2: TPoint): Double;

function LogN(base, x: Double): Double;

function Sar(x: Integer; Shift: Byte): Integer;

function Ror(x: UInt32; Shift: Byte): UInt32;

function Rol(x: UInt32; Shift: Byte): UInt32;

function DegToRad(Deg: Double): Double;

function RadToDeg(Rad: Double): Double;

function RadNormalize(Rad: Double): Double;

function DegNormalize(Deg: Double): Double;

function Log2(x: Double): Double;

function Log10(x: Double): Double;

function NextPower2(const n: Integer): Integer;

function Modulo(const X, Y: Integer): Integer;

function Modulo(const X, Y: Double): Double;

function DeltaAngle(const DegreesA, DegreesB: Double; R: Double = 360): Double;

function ExpandPolygon(const Polygon: TPointArray; Amount: Integer): TPointArray;

function PolygonArea(const Polygon: TPointArray): Double;

function CrossProduct(const r, p, q: TPoint): Int64;

function CrossProduct(const rx,ry, px,py, qx,qy: Double): Double;

function LinesIntersect(const P1, P2, Q1, Q2: TPoint): Boolean;

function LinesIntersect(const P1, P2, Q1, Q2: TPoint; out Where: TPoint): Boolean;

function DistToLine(const P, P1, P2: TPoint; out Nearest: TPoint): Double;

function DistToLine(const P, P1, P2: TPoint): Double;

function PointInTriangle(const P, P1, P2, P3: TPoint): Boolean;

function PointInBox(const P: TPoint; const Box: TBox): Boolean;

function PointInQuad(const P: TPoint; const A,B,C,D: TPoint): Boolean;

function PointInPolygon(const P: TPoint; const Polygon: TPointArray): Boolean;

function PointInCircle(const P, Center: TPoint; Radius: Double): Boolean; static;

function PointInEllipse(const P, Center: TPoint; const YRadius, XRadius: Double): Boolean;

function IsNumber(const Value: Single): Boolean;

function IsNumber(const Value: Double): Boolean;