Ejemplos de gimp_transform_matrix_scale en C++ (Cpp)

Ejemplo n.º 1

Archivo: gimpscaletool.c Proyecto: AdamGrzonkowski/gimp-1

static void
gimp_scale_tool_recalc_matrix (GimpTransformTool *tr_tool)
{
  gimp_matrix3_identity (&tr_tool->transform);
  gimp_transform_matrix_scale (&tr_tool->transform,
                               tr_tool->x1,
                               tr_tool->y1,
                               tr_tool->x2 - tr_tool->x1,
                               tr_tool->y2 - tr_tool->y1,
                               tr_tool->trans_info[X0],
                               tr_tool->trans_info[Y0],
                               tr_tool->trans_info[X1] - tr_tool->trans_info[X0],
                               tr_tool->trans_info[Y1] - tr_tool->trans_info[Y0]);
}

Ejemplo n.º 2

Archivo: transform-tools-cmds.c Proyecto: DevMaggio/gimp

static GimpValueArray *
scale_invoker (GimpProcedure         *procedure,
               Gimp                  *gimp,
               GimpContext           *context,
               GimpProgress          *progress,
               const GimpValueArray  *args,
               GError               **error)
{
  gboolean success = TRUE;
  GimpValueArray *return_vals;
  GimpDrawable *drawable;
  gboolean interpolation;
  gdouble x0;
  gdouble y0;
  gdouble x1;
  gdouble y1;

  drawable = gimp_value_get_drawable (gimp_value_array_index (args, 0), gimp);
  interpolation = g_value_get_boolean (gimp_value_array_index (args, 1));
  x0 = g_value_get_double (gimp_value_array_index (args, 2));
  y0 = g_value_get_double (gimp_value_array_index (args, 3));
  x1 = g_value_get_double (gimp_value_array_index (args, 4));
  y1 = g_value_get_double (gimp_value_array_index (args, 5));

  if (success)
    {
      gint x, y, width, height;

      success = (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL, TRUE, error) &&
                 x0 < x1 && y0 < y1);

      if (success &&
          gimp_item_mask_intersect (GIMP_ITEM (drawable), &x, &y, &width, &height))
        {
          GimpMatrix3           matrix;
          GimpInterpolationType interpolation_type = GIMP_INTERPOLATION_NONE;
          gint                  off_x, off_y;

          gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);

          x += off_x;
          y += off_y;

          /* Assemble the transformation matrix */
          gimp_matrix3_identity (&matrix);
          gimp_transform_matrix_scale (&matrix,
                                       x, y, width, height,
                                       x0, y0, x1 - x0, y1 - y0);

          if (interpolation)
            interpolation_type = gimp->config->interpolation_type;

          if (progress)
            gimp_progress_start (progress, _("Scaling"), FALSE);

          if (! gimp_viewable_get_children (GIMP_VIEWABLE (drawable)) &&
              ! gimp_channel_is_empty (gimp_image_get_mask (gimp_item_get_image (GIMP_ITEM (drawable)))))
            {
              if (! gimp_drawable_transform_affine (drawable, context,
                                                    &matrix,
                                                    GIMP_TRANSFORM_FORWARD,
                                                    interpolation_type, 3,
                                                    FALSE, progress))
                {
                  success = FALSE;
                }
            }
          else
            {
              gimp_item_transform (GIMP_ITEM (drawable), context, &matrix,
                                   GIMP_TRANSFORM_FORWARD,
                                   interpolation, 3,
                                   FALSE, progress);
            }

          if (progress)
            gimp_progress_end (progress);
        }
    }

  return_vals = gimp_procedure_get_return_values (procedure, success,
                                                  error ? *error : NULL);

  if (success)
    gimp_value_set_drawable (gimp_value_array_index (return_vals, 1), drawable);

  return return_vals;
}