##### Ninja Library - Model Function

# njSetConstantMaterial

Sets model materials

### FORMAT

`

  void njSetConstantMaterial( *argb )
  NJS_ARGB *argb

`

### PARAMETER

  `argb` | Material data

### RETURN

  None

### DESCRIPTION

  Specifies model material data. Value set in argd parameter is between -1.0f and +1.0f. Unless `njControl3D()` function is specified, initial value is undefined without a value to refer.

  Effective when NJD_CONTROL_3D_CONSTANT_MATERIAL or NJD_CONTROL_3D_OFFSET_MATERIAL is specified for `njControl3D()` function.

  Model drawn using specified material when NJD_CONTROL_3D_CONSTANT_MATERIAL is specified.

  When NJD_CONTROL_3D_OFFSET_MATERIAL is specified, drawing performed by adding specified material to model data material. Additionally, the color operation of sprite drawing is used.

### EXAMPLE

      The following displays semitransparent model.

      sbInitSystem( NJD_RESOLUTION_640x240_NTSCNI, NJD_FRAMEBUFFER_MODE_RGB565, 1 );
      njInitVertexBuffer( 500000, 0, 10000, 0, 0 );
      njInitMatrix( matrix, 128, 0);
      njInit3D( vbuf, 4096 );
      njInitView( &view );
      njCreateLight( &light, NJD_DIR_LIGHT );
      njSetView( &view );
      njControl3D( NJD_CONTROL_3D_OFFSET_MATERIAL );
      njSetConstantAttr( 0xFFFFFFFF, NJD_FLAG_USE_ALPHA)
      /* When semitransparent model is not set */
      argb.a = -0.5f;
      argb.r = 0.f;
      argb.g = 0.f;
      argb.b = 0.f;
      njSetConstantMaterial( &argb );
      while(1) {
       njClearMatrix();
       njTranslate( NULL, 0.f, 0.f, -10.f );
       njRotateXYZ( NULL, xx,yy,zz );
       njDrawModel( model );
       xx += 257;
       yy += 179;
       zz += 193;
       njWaitVSync();
      }

### REFERENCE

  `njInit3D()
  njControl3D()
  njDrawModel()
  njDrawObject()
  njDrawSprite2D()
  njDrawSprite3D()
  `

njSetConstantMaterial

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