TQuad

The TQuad type is a record which stores four TPoints (Top, Right, Bottom, Left)

See: https://en.wikipedia.org/wiki/Quadrilateral

• Top is the “most” top point (lowest Y)

• Right is the “most” right point (highest X)

• Bottom is the “most” bottom point (highest Y)

• Left is the “most” left point (lowest X)

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TQuad.Create

function TQuad.Create(ATop, ARight, ABottom, ALeft: TPoint): TQuad; static;

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TQuad.Create

function TQuad.Create(Box: TBox): TQuad; static;

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TQuad.Create

function TQuad.Create(Points: TPointArray): TQuad; static;

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TQuad.Rotate

function TQuad.Rotate(Angle: Double): TQuad;

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TQuad.Contains

function TQuad.Contains(P: TPoint): Boolean;

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TQuad.Offset

function TQuad.Offset(P: TPoint): TQuad;

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TQuad.Extract

function TQuad.Extract(Points: TPointArray): TPointArray;

Returns all points that are in the quad.

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TQuad.Exclude

function TQuad.Exclude(Points: TPointArray): TPointArray;

Returns all points that are not inside the quad.

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TQuad.Expand

function TQuad.Expand(Amount: Double): TQuad;

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TQuad.NearestEdge

function TQuad.NearestEdge(P: TPoint): TPoint;

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TQuad.Normalize

function TQuad.Normalize: TQuad;

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TQuad.RandomPoint

function TQuad.RandomPoint: TPoint;

Returns a completely random point in the quad.

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TQuad.RandomPointCenter

function TQuad.RandomPointCenter: TPoint;

Returns a random point in the quad which is weighted torwards the quad’s center.

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TQuad.Area

property TQuad.Area: Integer;

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TQuad.Corners

property TQuad.Corners: TPointArray;

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TQuad.Bounds

property TQuad.Bounds: TBox;

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TQuad.ShortSideLen

property TQuad.ShortSideLen: Integer;

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TQuad.LongSideLen

property TQuad.LongSideLen: Integer;

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TQuad.Mean

property TQuad.Mean: TPoint;

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in

operator in(Left: TPoint; Right: TQuad): Boolean;