njGetMotionScale | Japanese
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This is a node motion information function (scale).

### Syntax

      #include <Ninja.h>
      void    njGetMotionScale( Float *scl, Int spline_flag );
      Float   *scl
      Int     spline_flag

### Arguments

scl
  Information on scale (but scl[3])
spline_flag
  Spline attribute flag (0: linear and 1:spline)

### Return Value

  None

### Error

  None

### Description

  Information on scale at each node is stored in the argument.
  To obtain information such as frame motion, this function must call the njSetCurrentMotion function
  before use, and, if necessary (if within the hierarchical structure), must call njSetNextMotionNode
  to update the node information after use. (See example.)

### Usage Example

      #include <NINJA.H>

      #define OBJECT    object_sample
      #define MOTION    motion_sample
      #define MDATA3    ((NJS_MDATA3 *) MOTION->mdata)
      #define LINEAR    0
      #define SPLINE    1

      extern NJS_MOTION  MOTION[];
      extern NJS_OBJECT  OBJECT[];

      Float  ff = 0.f;
      Int  spline_flg = SPLINE;

      /* This mdata is for getting object information */
      NJS_MDATA3 *mdata;

      ...........

      Sint32 njUserMain(void)
      {
        ...........

        mdata = MDATA3;
        njSetCurrentMotion(MOTION, ff );
        PushPopMotion( OBJECT );

        ff+=0.2f;
        if( ff >= (MOTION->nbFrame-1) ) ff=0.f;
        ...........
      }

      PushPopMotion(NJS_OBJECT *obj)
      {
        float pos[3], scl[3];
        Angle ang[3];

        njPushMatrix( NULL );

        /* Execute motion function */

        /* Same as processing of the following function */
        /* njMotionTranslate( NULL, obj, spline_flg );  */
        /* njMotionRotateXYZ( NULL, obj, spline_flg );  */
        /* njMotionScale( NULL, obj, spline_flg );    */
        /* njSetNextMotionNode();            */

        if (mdata->p[0] != NULL) {
          njGetMotionTranslate( pos, spline_flg );
        } else  {
          pos[0] = obj->pos[0];
          pos[1] = obj->pos[1];
          pos[2] = obj->pos[2];
        }
        if (mdata->p[1] != NULL) {
          njGetMotionRotate( ang, spline_flg );
        } else  {
          ang[0] = obj->ang[0];
          ang[1] = obj->ang[1];
          ang[2] = obj->ang[2];
        }
        if (mdata->p[2] != NULL) {
          njGetMotionScale( scl, spline_flg );
        } else  {
          scl[0] = obj->scl[0];
          scl[1] = obj->scl[1];
          scl[2] = obj->scl[2];
        }
        njTranslate( NULL, pos[0], pos[1], pos[2] );
        njRotateXYZ( NULL, ang[0], ang[1], ang[2] );
        njScale( NULL, scl[0], scl[1], scl[2] );
        njSetNextMotionNode();
        mdata++;

        /* Draw picture of model */
        if( obj->model != NULL )
          njDrawModel( obj->model );

        if( obj->child != NULL )
          PushPopMotion( (NJS_OBJECT*)obj->child );

        njPopMatrix( 1 );

        if( obj->sibling != NULL )
          PushPopMotion( (NJS_OBJECT*)obj->sibling );
      }

      ...........

### Remark

  This function is used as one of the functions for navigating the parent-child hierarchy (push/pop).

### Related Items

  njSetCurrentMotion
  njMotionTransform
  njMotionTransformZXY
  njMotionTranslate
  njMotionRotateXYZ
  njMotionRotateZXY
  njMotionScale
  njGetMotionTranslate
  njGetMotionRotate
  njSetNextMotionNode

njGetMotionScale |
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