• Runtimes

  • Retrieve size of a CCSkeletonAnimation

    английский

Hi all,

I was wondering, how can I retrieve the size of an CCSkeletonAnimation ? I need it to compute where to place my CCSkeletonAnimation instances with respect to each other, in a project where the textures change (different atlases for some characters that share the animation)

I've tried the following commands and they always return an empty CGPoint :

[ccSkeletonAnimInstance contentSize] 

[ccSkeletonAnimInstance boundingBox]

I'm using spine 1.1 with Cocos2D 2.1. Running on several iPad (iOS 7, 8 and up).

Thanks!

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  • Ddanielrodriguez

    • Сообщение #2
    • Изменено
    • Это сообщение на английский

    • toojuice

      • Сообщение #3
      • Это сообщение на английский

      I had the same problem with cocos2d-x initially. Until you have started an animation, the contentSize and boundingBoxs are zero. To get around this, in my init function:

      1) set an initial animation
      2) call SkeletonAnimation::update and pass in 0 (i.e. the starting pose of the animation)
      3) if necessary, clear the track

      After this, I can poll boundingBox

      • Nate

      • Сообщение #4
      • Это сообщение на английский

      Thanks, toojuice. The skeleton hasn't been posed yet, so the bounds are zero.

      5 дней спустя

      This is great, thank you so much!

      By the way, how would you go about rendering such bound around the animating element ?

      I thought of adding this code, but there's an offset which I cannot account for :

      // CCSkeleton::-draw
// near end of method...
if (_debugRect) { // a new property I added for debugging...
        // Position and bounding box
        CGPoint pos =  [[self parent] convertToWorldSpace:[self position]];
        CGRect bb = [self boundingBox];
       // draw the rect...
        glLineWidth(2);
        ccDrawColor4B(255, 0, 0, 255);
        CGPoint points[4];
        points[0] = ccp(pos.x, pos.y);
        points[1] = ccp(pos.x + bb.size.width, pos.y);
        points[2] = ccp(pos.x + bb.size.width, pos.y + bb.size.height);
        points[3] = ccp(pos.x, pos.y + bb.size.height);
        ccDrawPoly(points, 4, true);
    }

      • Nate

      • Сообщение #6
      • Это сообщение на английский

      The bounding box is in the coordinates of the CCSkeletonAnimation node. Pseudo code:

      points[0] = ccp(pos.x + bb.x, pos.y + bb.y);
points[1] = ccp(pos.x + bb.x + bb.width, pos.y + bb.y);
points[2] = ccp(pos.x + bb.x + bb.width, pos.y + bb.y + bb.height);
points[3] = ccp(pos.x + bb.x, pos.y + bb.y + bb.height);