ITimeRect

ITimeRect

1. Definition

ITimeRect derives from ISlideShowObject. It is a data structure for storing features of an object as a function of the playing time. For example, at time t₀ an object can elsewhere and otherwise be rotated, as at time t₁. Changes between these two time points are interpolated, which creates Movement paths and Camera pens. Please refer to Example

ITimeRect inherits from ISlideShowObject
  function GetAngleX: Float;
  function GetAngleY: Float;
  function GetAngleZ: Float;
  function GetBottom: Float;
  function GetBounds: TDoubleRect;
  function GetDDX: Float;
  function GetDDY: Float;
  function GetDDZ: Float;
  function GetDX: Float;
  function GetDY: Float;
  function GetDZ: Float;
  function GetHeight: Float;
  function GetLeft: Float;
  function GetRight: Float;
  function GetStretchMode: TStretchmode;
  function GetTime: Float;
  function GetTop: Float;
  function GetValueType: TTimeValueType;
  function GetWidth: Float;
  function GetX: Float;
  function GetY: Float;
  function GetZ: Float;
  procedure SetAngleX(const Value: Float);
  procedure SetAngleY(const Value: Float);
  procedure SetAngleZ(const Value: Float);
  procedure SetBottom(const Value: Float);
  procedure SetBounds(const Value: TDoubleRect);
  procedure SetHeight(const Value: Float);
  procedure SetLeft(const Value: Float);
  procedure SetRight(const Value: Float);
  procedure SetStretchMode(const Value: TStretchmode);
  procedure SetTime(const Value: Float);
  procedure SetTop(const Value: Float);
  procedure SetValueType(const Value: TTimeValueType);
  procedure SetWidth(const Value: Float);
  procedure SetX(const Value: Float);
  procedure SetY(const Value: Float);
  procedure SetZ(const Value: Float);
end;

2. Methods

function GetStretchMode: TStretchmode;
procedure SetStretchMode(const Value: TStretchmode);

• Time stamp in milliseconds

  function GetTime: Float;
  procedure SetTime(const Value: Float);

• Position in 3-dimansional space

  function GetX: Float;
  function GetY: Float;
  function GetZ: Float;
  procedure SetX(const Value: Float);
  procedure SetY(const Value: Float);
  procedure SetZ(const Value: Float);

• Rotation angle around three axes

  function GetAngleX: Float;
  function GetAngleY: Float;
  function GetAngleZ: Float;
  procedure SetAngleX(const Value: Float);
  procedure SetAngleY(const Value: Float);
  procedure SetAngleZ(const Value: Float);

• Bounds as outer contraints as TDoubleRect, or all values separate

  function GetBounds: TDoubleRect;
  function GetBottom: Float;
  function GetLeft: Float;
  function GetRight: Float;
  function GetTop: Float;
  procedure SetBottom(const Value: Float);
  procedure SetBounds(const Value: TDoubleRect);
  procedure SetLeft(const Value: Float);
  procedure SetRight(const Value: Float);
  procedure SetTop(const Value: Float);

• Height and width

  function GetWidth: Float;
  function GetHeight: Float;
  procedure SetWidth(const Value: Float);
  procedure SetHeight(const Value: Float);

• Type of interpolation at the point

  • Value tvtSmooth: interpolated coarsly
  • Value tvtEdge: no interpolation, corner
  • Value tvtHermite: better interpolation
  • Value tvtSpline: best interpolation, Attention: computationally-heavy

  function GetValueType: TTimeValueType;
  procedure SetValueType(const Value: TTimeValueType);

• Adjustment of images to different aspect ratios

  • Value smStretch: stretch object
  • Value smStretchRatio: stretch object, keep rati
  • Value smStretchRatioCut: fill canvas, crop object accordingly

  function GetStretchMode: TStretchmode;
  procedure SetStretchMode(const Value: TStretchmode);

• 1^st and 2^nd derivative of the curve at the point

  function GetDX: Float;
  function GetDY: Float;
  function GetDZ: Float;
  function GetDDX: Float;
  function GetDDY: Float;
  function GetDDZ: Float;