CODEWITHSUNDEEP
c#iosxamarin.iostransformcgaffinetransform
Mark Strawmyer
Mark Strawmyer

Reputation: 115

MonoTouch equivalent of transform.b and transform.a?

iOS has a property on a transform of "b" and "a". Example iOS code is below. What is the mono / monotouch equivalent?

CGFloat radians = atan2f(container.transform.b, container.transform.a);

Upvotes: 4

Views: 697

Answers (1)

poupou
poupou

Reputation: 43553

Apple's CGAffineTransform is defined with letters: a, b, c, d for it's matrix member (except the translation part).

struct CGAffineTransform {
    CGFloat a;
    CGFloat b;
    CGFloat c;
    CGFloat d;
    CGFloat tx;
    CGFloat ty;
};

Meanwhile MonoTouch use the, more .NET-like (e.g. System.Drawing), naming of: xx, yx, xy, yy.

public struct CGAffineTransform {
   public float xx;   // a
   public float yx;   // b 
   public float xy;   // c
   public float yy;   // d
   public float x0;   // tx
   public float y0;   // ty
}

That makes it easier to port existing C# code.

Upvotes: 4

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