C++ (Cpp) calculateTransformCenter Examples

Example #1

File: editmesh_bevel.c Project: wisaac407/blender

static int edbm_bevel_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
	/* TODO make modal keymap (see fly mode) */
	RegionView3D *rv3d = CTX_wm_region_view3d(C);
	BevelData *opdata;
	float center_3d[3];

	if (!edbm_bevel_init(C, op, true)) {
		return OPERATOR_CANCELLED;
	}

	opdata = op->customdata;

	/* initialize mouse values */
	if (!calculateTransformCenter(C, V3D_AROUND_CENTER_MEAN, center_3d, opdata->mcenter)) {
		/* in this case the tool will likely do nothing,
		 * ideally this will never happen and should be checked for above */
		opdata->mcenter[0] = opdata->mcenter[1] = 0;
	}
	edbm_bevel_calc_initial_length(op, event, false);

	/* for OFFSET_VALUE only, the scale is the size of a pixel under the mouse in 3d space */
	opdata->scale[OFFSET_VALUE] = rv3d ? ED_view3d_pixel_size(rv3d, center_3d) : 1.0f;

	edbm_bevel_update_header(C, op);

	if (!edbm_bevel_calc(op)) {
		edbm_bevel_cancel(C, op);
		return OPERATOR_CANCELLED;
	}

	WM_event_add_modal_handler(C, op);

	return OPERATOR_RUNNING_MODAL;
}

Example #2

File: editmesh_inset.c Project: bitfusionio/blender

static int edbm_inset_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
	RegionView3D *rv3d = CTX_wm_region_view3d(C);
	InsetData *opdata;
	float mlen[2];
	float center_3d[3];

	if (!edbm_inset_init(C, op, true)) {
		return OPERATOR_CANCELLED;
	}

	opdata = op->customdata;

	/* initialize mouse values */
	if (!calculateTransformCenter(C, V3D_CENTROID, center_3d, opdata->mcenter)) {
		/* in this case the tool will likely do nothing,
		 * ideally this will never happen and should be checked for above */
		opdata->mcenter[0] = opdata->mcenter[1] = 0;
	}
	mlen[0] = opdata->mcenter[0] - event->mval[0];
	mlen[1] = opdata->mcenter[1] - event->mval[1];
	opdata->initial_length = len_v2(mlen);
	opdata->pixel_size = rv3d ? ED_view3d_pixel_size(rv3d, center_3d) : 1.0f;

	edbm_inset_calc(op);

	edbm_inset_update_header(op, C);

	WM_event_add_modal_handler(C, op);
	return OPERATOR_RUNNING_MODAL;
}

Example #3

File: editmesh_bevel.c Project: dfelinto/blender

static int edbm_bevel_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
  RegionView3D *rv3d = CTX_wm_region_view3d(C);
  BevelData *opdata;
  float center_3d[3];

  if (!edbm_bevel_init(C, op, true)) {
    return OPERATOR_CANCELLED;
  }

  opdata = op->customdata;

  /* initialize mouse values */
  if (!calculateTransformCenter(C, V3D_AROUND_CENTER_MEDIAN, center_3d, opdata->mcenter)) {
    /* in this case the tool will likely do nothing,
     * ideally this will never happen and should be checked for above */
    opdata->mcenter[0] = opdata->mcenter[1] = 0;
  }

  /* for OFFSET_VALUE only, the scale is the size of a pixel under the mouse in 3d space */
  opdata->scale[OFFSET_VALUE] = rv3d ? ED_view3d_pixel_size(rv3d, center_3d) : 1.0f;
  /* since we are affecting untransformed object but seeing in transformed space,
   * compensate for that */
  opdata->scale[OFFSET_VALUE] /= opdata->max_obj_scale;

  edbm_bevel_calc_initial_length(op, event, false);

  edbm_bevel_update_header(C, op);

  if (!edbm_bevel_calc(op)) {
    edbm_bevel_cancel(C, op);
    ED_workspace_status_text(C, NULL);
    return OPERATOR_CANCELLED;
  }

  WM_event_add_modal_handler(C, op);

  return OPERATOR_RUNNING_MODAL;
}