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D2D1_BEZIER_SEGMENT structure (d2d1.h)

  • Article

Represents a cubic bezier segment drawn between two points.

Syntax

typedef struct D2D1_BEZIER_SEGMENT {
  D2D1_POINT_2F point1;
  D2D1_POINT_2F point2;
  D2D1_POINT_2F point3;
} D2D1_BEZIER_SEGMENT;

Members

point1

Type: D2D1_POINT_2F

The first control point for the Bezier segment.

point2

Type: D2D1_POINT_2F

The second control point for the Bezier segment.

point3

Type: D2D1_POINT_2F

The end point for the Bezier segment.

Remarks

A cubic Bezier curve is defined by four points: a start point, an end point (point3), and two control points (point1 and point2). A Bezier segment does not contain a property for the starting point of the curve; it defines only the end point. The beginning point of the curve is the current point of the path to which the Bezier curve is added.

The two control points of a cubic Bezier curve behave like magnets, attracting portions of what would otherwise be a straight line toward themselves and producing a curve. The first control point, point1, affects the beginning portion of the curve; the second control point, point2, affects the ending portion of the curve.

Note  The curve doesn't necessarily pass through either of the control points; each control point moves its portion of the line toward itself, but not through itself.
 

Requirements

Requirement Value
Minimum supported client Windows 7, Windows Vista with SP2 and Platform Update for Windows Vista [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 R2, Windows Server 2008 with SP2 and Platform Update for Windows Server 2008 [desktop apps | UWP apps]
Header d2d1.h