Differential D5819 Diff 18274 source/blender/editors/transform/transform_op_mode_rotate.c

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source/blender/editors/transform/transform_op_mode_rotate.c

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				/*
				* This program is free software; you can redistribute it and/or
				* modify it under the terms of the GNU General Public License
				* as published by the Free Software Foundation; either version 2
				* of the License, or (at your option) any later version.
				*
				* This program is distributed in the hope that it will be useful,
				* but WITHOUT ANY WARRANTY; without even the implied warranty of
				* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
				* GNU General Public License for more details.
				*
				* You should have received a copy of the GNU General Public License
				* along with this program; if not, write to the Free Software Foundation,
				* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
				*/

				/** \file
				* \ingroup edtransform
				*/

				#include "MEM_guardedalloc.h"

				#include "BLI_math.h"

				#include "BKE_context.h"
				#include "BKE_unit.h"

				#include "RNA_define.h"

				#include "WM_api.h"
				#include "WM_types.h"

				#include "UI_interface.h"

				#include "ED_screen.h"

				#include "transform.h"
				#include "transform_op.h"

				const char OP_ROTATION[] = "TRANSFORM_OT_rotate";

				/* -------------------------------------------------------------------- */
				/* Transform (Rotation) */

				/** \name Transform Rotation
				* \{ */

				static float large_rotation_limit(float angle)
				{
				/* Limit rotation to 1001 turns max
				* (otherwise iterative handling of 'large' rotations would become too slow). */
				const float angle_max = (float)(M_PI * 2000.0);
				if (fabsf(angle) > angle_max) {
				const float angle_sign = angle < 0.0f ? -1.0f : 1.0f;
				angle = angle_sign * (fmodf(fabsf(angle), (float)(M_PI * 2.0)) + angle_max);
				}
				return angle;
				}

				static void applyRotationValue(TransInfo *t,
				float angle,
				float axis[3],
				const bool is_large_rotation)
				{
				float mat[3][3];
				int i;

				const float angle_sign = angle < 0.0f ? -1.0f : 1.0f;
				/* We cannot use something too close to 180°, or 'continuous' rotation may fail
				* due to computing error... */
				const float angle_step = angle_sign * (float)(0.9 * M_PI);

				if (is_large_rotation) {
				/* Just in case, calling code should have already done that in practice
				* (for UI feedback reasons). */
				angle = large_rotation_limit(angle);
				}

				axis_angle_normalized_to_mat3(mat, axis, angle);
				/* Counter for needed updates (when we need to update to non-default matrix,
				* we also need another update on next iteration to go back to default matrix,
				* hence the '2' value used here, instead of a mere boolean). */
				short do_update_matrix = 0;

				FOREACH_TRANS_DATA_CONTAINER (t, tc) {
				TransData *td = tc->data;
				for (i = 0; i < tc->data_len; i++, td++) {
				if (td->flag & TD_NOACTION) {
				break;
				}

				if (td->flag & TD_SKIP) {
				continue;
				}

				float angle_final = angle;
				if (t->con.applyRot) {
				t->con.applyRot(t, tc, td, axis, NULL);
				angle_final = angle * td->factor;
				/* Even though final angle might be identical to orig value,
				* we have to update the rotation matrix in that case... */
				do_update_matrix = 2;
				}
				else if (t->flag & T_PROP_EDIT) {
				angle_final = angle * td->factor;
				}

				/* Rotation is very likely to be above 180°, we need to do rotation by steps.
				* Note that this is only needed when doing 'absolute' rotation
				* (i.e. from initial rotation again, typically when using numinput).
				* regular incremental rotation (from mouse/widget/...) will be called often enough,
				* hence steps are small enough to be properly handled without that complicated trick.
				* Note that we can only do that kind of stepped rotation if we have initial rotation values
				* (and access to some actual rotation value storage).
				* Otherwise, just assume it's useless (e.g. in case of mesh/UV/etc. editing).
				* Also need to be in Euler rotation mode, the others never allow more than one turn anyway.
				*/
				if (is_large_rotation && td->ext != NULL && td->ext->rotOrder == ROT_MODE_EUL) {
				copy_v3_v3(td->ext->rot, td->ext->irot);
				for (float angle_progress = angle_step; fabsf(angle_progress) < fabsf(angle_final);
				angle_progress += angle_step) {
				axis_angle_normalized_to_mat3(mat, axis, angle_progress);
				ElementRotation(t, tc, td, mat, t->around);
				}
				do_update_matrix = 2;
				}
				else if (angle_final != angle) {
				do_update_matrix = 2;
				}

				if (do_update_matrix > 0) {
				axis_angle_normalized_to_mat3(mat, axis, angle_final);
				do_update_matrix--;
				}

				ElementRotation(t, tc, td, mat, t->around);
				}
				}
				}

				static void applyRotation(TransInfo *t, const int UNUSED(mval[2]))
				{
				char str[UI_MAX_DRAW_STR];

				float final;

				final = t->values[0];

				snapGridIncrement(t, &final);

				float axis_final[3];
				copy_v3_v3(axis_final, t->orient_matrix[t->orient_axis]);

				if ((t->con.mode & CON_APPLY) && t->con.applyRot) {
				t->con.applyRot(t, NULL, NULL, axis_final, NULL);
				}

				applySnapping(t, &final);

				if (applyNumInput(&t->num, &final)) {
				/* We have to limit the amount of turns to a reasonable number here,
				* to avoid things getting very slow, see how applyRotationValue() handles those... */
				final = large_rotation_limit(final);
				}

				t->values_final[0] = final;

				headerRotation(t, str, final);

				const bool is_large_rotation = hasNumInput(&t->num);
				applyRotationValue(t, final, axis_final, is_large_rotation);

				recalcData(t);

				ED_area_status_text(t->sa, str);
				}

				void initRotation(TransInfo *t)
				{
				t->mode = TFM_ROTATION;
				t->transform = applyRotation;

				setInputPostFct(&t->mouse, postInputRotation);
				initMouseInputMode(t, &t->mouse, INPUT_ANGLE);

				t->idx_max = 0;
				t->num.idx_max = 0;
				t->snap[0] = 0.0f;
				t->snap[1] = DEG2RAD(5.0);
				t->snap[2] = DEG2RAD(1.0);

				copy_v3_fl(t->num.val_inc, t->snap[2]);
				t->num.unit_sys = t->scene->unit.system;
				t->num.unit_use_radians = (t->scene->unit.system_rotation == USER_UNIT_ROT_RADIANS);
				t->num.unit_type[0] = B_UNIT_ROTATION;

				if (t->flag & T_2D_EDIT) {
				t->flag \|= T_NO_CONSTRAINT;
				}
				}
				/** \} */

				void TRANSFORM_OT_rotate(struct wmOperatorType *ot)
				{
				/* identifiers */
				ot->name = "Rotate";
				ot->description = "Rotate selected items";
				ot->idname = OP_ROTATION;
				ot->flag = OPTYPE_REGISTER \| OPTYPE_UNDO \| OPTYPE_BLOCKING;

				/* api callbacks */
				ot->invoke = transform_invoke;
				ot->exec = transform_exec;
				ot->modal = transform_modal;
				ot->cancel = transform_cancel;
				ot->poll = ED_operator_screenactive;
				ot->poll_property = transform_poll_property;

				RNA_def_float_rotation(
				ot->srna, "value", 0, NULL, -FLT_MAX, FLT_MAX, "Angle", "", -M_PI * 2, M_PI * 2);

				WM_operatortype_props_advanced_begin(ot);

				Transform_Properties(ot,
				P_ORIENT_AXIS \| P_ORIENT_MATRIX \| P_CONSTRAINT \| P_PROPORTIONAL \| P_MIRROR \|
				P_GEO_SNAP \| P_GPENCIL_EDIT \| P_CENTER);
				}