diff options
Diffstat (limited to 'source/blender/editors/space_view3d/view3d_navigate_zoom.c')
| -rw-r--r-- | source/blender/editors/space_view3d/view3d_navigate_zoom.c | 598 |
1 files changed, 598 insertions, 0 deletions
diff --git a/source/blender/editors/space_view3d/view3d_navigate_zoom.c b/source/blender/editors/space_view3d/view3d_navigate_zoom.c new file mode 100644 index 00000000000..a6c7d06c079 --- /dev/null +++ b/source/blender/editors/space_view3d/view3d_navigate_zoom.c @@ -0,0 +1,598 @@ +/* + * 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 spview3d + */ + +#include "BLI_math.h" +#include "BLI_rect.h" + +#include "BKE_context.h" +#include "BKE_screen.h" + +#include "DEG_depsgraph_query.h" + +#include "WM_api.h" + +#include "RNA_access.h" + +#include "ED_screen.h" + +#include "PIL_time.h" + +#include "view3d_intern.h" +#include "view3d_navigate.h" /* own include */ + +/* -------------------------------------------------------------------- */ +/** \name View Zoom Operator + * \{ */ + +/* #viewdolly_modal_keymap has an exact copy of this, apply fixes to both. */ +void viewzoom_modal_keymap(wmKeyConfig *keyconf) +{ + static const EnumPropertyItem modal_items[] = { + {VIEW_MODAL_CONFIRM, "CONFIRM", 0, "Confirm", ""}, + + {VIEWROT_MODAL_SWITCH_ROTATE, "SWITCH_TO_ROTATE", 0, "Switch to Rotate"}, + {VIEWROT_MODAL_SWITCH_MOVE, "SWITCH_TO_MOVE", 0, "Switch to Move"}, + + {0, NULL, 0, NULL, NULL}, + }; + + wmKeyMap *keymap = WM_modalkeymap_find(keyconf, "View3D Zoom Modal"); + + /* this function is called for each spacetype, only needs to add map once */ + if (keymap && keymap->modal_items) { + return; + } + + keymap = WM_modalkeymap_ensure(keyconf, "View3D Zoom Modal", modal_items); + + /* disabled mode switching for now, can re-implement better, later on */ +#if 0 + WM_modalkeymap_add_item(keymap, LEFTMOUSE, KM_RELEASE, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ROTATE); + WM_modalkeymap_add_item(keymap, LEFTCTRLKEY, KM_RELEASE, KM_ANY, 0, VIEWROT_MODAL_SWITCH_ROTATE); + WM_modalkeymap_add_item(keymap, LEFTSHIFTKEY, KM_PRESS, KM_ANY, 0, VIEWROT_MODAL_SWITCH_MOVE); +#endif + + /* assign map to operators */ + WM_modalkeymap_assign(keymap, "VIEW3D_OT_zoom"); +} + +/** + * \param zoom_xy: Optionally zoom to window location + * (coords compatible w/ #wmEvent.xy). Use when not NULL. + */ +static void view_zoom_to_window_xy_camera(Scene *scene, + Depsgraph *depsgraph, + View3D *v3d, + ARegion *region, + float dfac, + const int zoom_xy[2]) +{ + RegionView3D *rv3d = region->regiondata; + const float zoomfac = BKE_screen_view3d_zoom_to_fac(rv3d->camzoom); + const float zoomfac_new = clamp_f( + zoomfac * (1.0f / dfac), RV3D_CAMZOOM_MIN_FACTOR, RV3D_CAMZOOM_MAX_FACTOR); + const float camzoom_new = BKE_screen_view3d_zoom_from_fac(zoomfac_new); + + if (zoom_xy != NULL) { + float zoomfac_px; + rctf camera_frame_old; + rctf camera_frame_new; + + const float pt_src[2] = {zoom_xy[0], zoom_xy[1]}; + float pt_dst[2]; + float delta_px[2]; + + ED_view3d_calc_camera_border(scene, depsgraph, region, v3d, rv3d, &camera_frame_old, false); + BLI_rctf_translate(&camera_frame_old, region->winrct.xmin, region->winrct.ymin); + + rv3d->camzoom = camzoom_new; + CLAMP(rv3d->camzoom, RV3D_CAMZOOM_MIN, RV3D_CAMZOOM_MAX); + + ED_view3d_calc_camera_border(scene, depsgraph, region, v3d, rv3d, &camera_frame_new, false); + BLI_rctf_translate(&camera_frame_new, region->winrct.xmin, region->winrct.ymin); + + BLI_rctf_transform_pt_v(&camera_frame_new, &camera_frame_old, pt_dst, pt_src); + sub_v2_v2v2(delta_px, pt_dst, pt_src); + + /* translate the camera offset using pixel space delta + * mapped back to the camera (same logic as panning in camera view) */ + zoomfac_px = BKE_screen_view3d_zoom_to_fac(rv3d->camzoom) * 2.0f; + + rv3d->camdx += delta_px[0] / (region->winx * zoomfac_px); + rv3d->camdy += delta_px[1] / (region->winy * zoomfac_px); + CLAMP(rv3d->camdx, -1.0f, 1.0f); + CLAMP(rv3d->camdy, -1.0f, 1.0f); + } + else { + rv3d->camzoom = camzoom_new; + CLAMP(rv3d->camzoom, RV3D_CAMZOOM_MIN, RV3D_CAMZOOM_MAX); + } +} + +/** + * \param zoom_xy: Optionally zoom to window location + * (coords compatible w/ #wmEvent.xy). Use when not NULL. + */ +static void view_zoom_to_window_xy_3d(ARegion *region, float dfac, const int zoom_xy[2]) +{ + RegionView3D *rv3d = region->regiondata; + const float dist_new = rv3d->dist * dfac; + + if (zoom_xy != NULL) { + float dvec[3]; + float tvec[3]; + float tpos[3]; + float mval_f[2]; + + float zfac; + + negate_v3_v3(tpos, rv3d->ofs); + + mval_f[0] = (float)(((zoom_xy[0] - region->winrct.xmin) * 2) - region->winx) / 2.0f; + mval_f[1] = (float)(((zoom_xy[1] - region->winrct.ymin) * 2) - region->winy) / 2.0f; + + /* Project cursor position into 3D space */ + zfac = ED_view3d_calc_zfac(rv3d, tpos, NULL); + ED_view3d_win_to_delta(region, mval_f, dvec, zfac); + + /* Calculate view target position for dolly */ + add_v3_v3v3(tvec, tpos, dvec); + negate_v3(tvec); + + /* Offset to target position and dolly */ + copy_v3_v3(rv3d->ofs, tvec); + rv3d->dist = dist_new; + + /* Calculate final offset */ + madd_v3_v3v3fl(rv3d->ofs, tvec, dvec, dfac); + } + else { + rv3d->dist = dist_new; + } +} + +static float viewzoom_scale_value(const rcti *winrct, + const eViewZoom_Style viewzoom, + const bool zoom_invert, + const bool zoom_invert_force, + const int xy_curr[2], + const int xy_init[2], + const float val, + const float val_orig, + double *r_timer_lastdraw) +{ + float zfac; + + if (viewzoom == USER_ZOOM_CONTINUE) { + double time = PIL_check_seconds_timer(); + float time_step = (float)(time - *r_timer_lastdraw); + float fac; + + if (U.uiflag & USER_ZOOM_HORIZ) { + fac = (float)(xy_init[0] - xy_curr[0]); + } + else { + fac = (float)(xy_init[1] - xy_curr[1]); + } + + fac /= U.dpi_fac; + + if (zoom_invert != zoom_invert_force) { + fac = -fac; + } + + zfac = 1.0f + ((fac / 20.0f) * time_step); + *r_timer_lastdraw = time; + } + else if (viewzoom == USER_ZOOM_SCALE) { + /* method which zooms based on how far you move the mouse */ + + const int ctr[2] = { + BLI_rcti_cent_x(winrct), + BLI_rcti_cent_y(winrct), + }; + float len_new = (5 * U.dpi_fac) + ((float)len_v2v2_int(ctr, xy_curr) / U.dpi_fac); + float len_old = (5 * U.dpi_fac) + ((float)len_v2v2_int(ctr, xy_init) / U.dpi_fac); + + /* intentionally ignore 'zoom_invert' for scale */ + if (zoom_invert_force) { + SWAP(float, len_new, len_old); + } + + zfac = val_orig * (len_old / max_ff(len_new, 1.0f)) / val; + } + else { /* USER_ZOOM_DOLLY */ + float len_new = 5 * U.dpi_fac; + float len_old = 5 * U.dpi_fac; + + if (U.uiflag & USER_ZOOM_HORIZ) { + len_new += (winrct->xmax - (xy_curr[0])) / U.dpi_fac; + len_old += (winrct->xmax - (xy_init[0])) / U.dpi_fac; + } + else { + len_new += (winrct->ymax - (xy_curr[1])) / U.dpi_fac; + len_old += (winrct->ymax - (xy_init[1])) / U.dpi_fac; + } + + if (zoom_invert != zoom_invert_force) { + SWAP(float, len_new, len_old); + } + + zfac = val_orig * (2.0f * ((len_new / max_ff(len_old, 1.0f)) - 1.0f) + 1.0f) / val; + } + + return zfac; +} + +static float viewzoom_scale_value_offset(const rcti *winrct, + const eViewZoom_Style viewzoom, + const bool zoom_invert, + const bool zoom_invert_force, + const int xy_curr[2], + const int xy_init[2], + const int xy_offset[2], + const float val, + const float val_orig, + double *r_timer_lastdraw) +{ + const int xy_curr_offset[2] = { + xy_curr[0] + xy_offset[0], + xy_curr[1] + xy_offset[1], + }; + const int xy_init_offset[2] = { + xy_init[0] + xy_offset[0], + xy_init[1] + xy_offset[1], + }; + return viewzoom_scale_value(winrct, + viewzoom, + zoom_invert, + zoom_invert_force, + xy_curr_offset, + xy_init_offset, + val, + val_orig, + r_timer_lastdraw); +} + +static void viewzoom_apply_camera(ViewOpsData *vod, + const int xy[2], + const eViewZoom_Style viewzoom, + const bool zoom_invert, + const bool zoom_to_pos) +{ + float zfac; + float zoomfac_prev = BKE_screen_view3d_zoom_to_fac(vod->init.camzoom) * 2.0f; + float zoomfac = BKE_screen_view3d_zoom_to_fac(vod->rv3d->camzoom) * 2.0f; + + zfac = viewzoom_scale_value_offset(&vod->region->winrct, + viewzoom, + zoom_invert, + true, + xy, + vod->init.event_xy, + vod->init.event_xy_offset, + zoomfac, + zoomfac_prev, + &vod->prev.time); + + if (!ELEM(zfac, 1.0f, 0.0f)) { + /* calculate inverted, then invert again (needed because of camera zoom scaling) */ + zfac = 1.0f / zfac; + view_zoom_to_window_xy_camera(vod->scene, + vod->depsgraph, + vod->v3d, + vod->region, + zfac, + zoom_to_pos ? vod->prev.event_xy : NULL); + } + + ED_region_tag_redraw(vod->region); +} + +static void viewzoom_apply_3d(ViewOpsData *vod, + const int xy[2], + const eViewZoom_Style viewzoom, + const bool zoom_invert, + const bool zoom_to_pos) +{ + float zfac; + float dist_range[2]; + + ED_view3d_dist_range_get(vod->v3d, dist_range); + + zfac = viewzoom_scale_value_offset(&vod->region->winrct, + viewzoom, + zoom_invert, + false, + xy, + vod->init.event_xy, + vod->init.event_xy_offset, + vod->rv3d->dist, + vod->init.dist, + &vod->prev.time); + + if (zfac != 1.0f) { + const float zfac_min = dist_range[0] / vod->rv3d->dist; + const float zfac_max = dist_range[1] / vod->rv3d->dist; + CLAMP(zfac, zfac_min, zfac_max); + + view_zoom_to_window_xy_3d(vod->region, zfac, zoom_to_pos ? vod->prev.event_xy : NULL); + } + + /* these limits were in old code too */ + CLAMP(vod->rv3d->dist, dist_range[0], dist_range[1]); + + if (RV3D_LOCK_FLAGS(vod->rv3d) & RV3D_BOXVIEW) { + view3d_boxview_sync(vod->area, vod->region); + } + + ED_view3d_camera_lock_sync(vod->depsgraph, vod->v3d, vod->rv3d); + + ED_region_tag_redraw(vod->region); +} + +static void viewzoom_apply(ViewOpsData *vod, + const int xy[2], + const eViewZoom_Style viewzoom, + const bool zoom_invert, + const bool zoom_to_pos) +{ + if ((vod->rv3d->persp == RV3D_CAMOB) && + (vod->rv3d->is_persp && ED_view3d_camera_lock_check(vod->v3d, vod->rv3d)) == 0) { + viewzoom_apply_camera(vod, xy, viewzoom, zoom_invert, zoom_to_pos); + } + else { + viewzoom_apply_3d(vod, xy, viewzoom, zoom_invert, zoom_to_pos); + } +} + +static int viewzoom_modal(bContext *C, wmOperator *op, const wmEvent *event) +{ + ViewOpsData *vod = op->customdata; + short event_code = VIEW_PASS; + bool use_autokey = false; + int ret = OPERATOR_RUNNING_MODAL; + + /* execute the events */ + if (event->type == TIMER && event->customdata == vod->timer) { + /* continuous zoom */ + event_code = VIEW_APPLY; + } + else if (event->type == MOUSEMOVE) { + event_code = VIEW_APPLY; + } + else if (event->type == EVT_MODAL_MAP) { + switch (event->val) { + case VIEW_MODAL_CONFIRM: + event_code = VIEW_CONFIRM; + break; + case VIEWROT_MODAL_SWITCH_MOVE: + WM_operator_name_call(C, "VIEW3D_OT_move", WM_OP_INVOKE_DEFAULT, NULL); + event_code = VIEW_CONFIRM; + break; + case VIEWROT_MODAL_SWITCH_ROTATE: + WM_operator_name_call(C, "VIEW3D_OT_rotate", WM_OP_INVOKE_DEFAULT, NULL); + event_code = VIEW_CONFIRM; + break; + } + } + else if (event->type == vod->init.event_type && event->val == KM_RELEASE) { + event_code = VIEW_CONFIRM; + } + + if (event_code == VIEW_APPLY) { + const bool use_cursor_init = RNA_boolean_get(op->ptr, "use_cursor_init"); + viewzoom_apply(vod, + event->xy, + (eViewZoom_Style)U.viewzoom, + (U.uiflag & USER_ZOOM_INVERT) != 0, + (use_cursor_init && (U.uiflag & USER_ZOOM_TO_MOUSEPOS))); + if (ED_screen_animation_playing(CTX_wm_manager(C))) { + use_autokey = true; + } + } + else if (event_code == VIEW_CONFIRM) { + use_autokey = true; + ret = OPERATOR_FINISHED; + } + + if (use_autokey) { + ED_view3d_camera_lock_autokey(vod->v3d, vod->rv3d, C, false, true); + } + + if (ret & OPERATOR_FINISHED) { + viewops_data_free(C, op->customdata); + op->customdata = NULL; + } + + return ret; +} + +static int viewzoom_exec(bContext *C, wmOperator *op) +{ + Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C); + Scene *scene = CTX_data_scene(C); + View3D *v3d; + RegionView3D *rv3d; + ScrArea *area; + ARegion *region; + bool use_cam_zoom; + float dist_range[2]; + + const int delta = RNA_int_get(op->ptr, "delta"); + const bool use_cursor_init = RNA_boolean_get(op->ptr, "use_cursor_init"); + + if (op->customdata) { + ViewOpsData *vod = op->customdata; + + area = vod->area; + region = vod->region; + } + else { + area = CTX_wm_area(C); + region = CTX_wm_region(C); + } + + v3d = area->spacedata.first; + rv3d = region->regiondata; + + use_cam_zoom = (rv3d->persp == RV3D_CAMOB) && + !(rv3d->is_persp && ED_view3d_camera_lock_check(v3d, rv3d)); + + int zoom_xy_buf[2]; + const int *zoom_xy = NULL; + if (use_cursor_init && (U.uiflag & USER_ZOOM_TO_MOUSEPOS)) { + zoom_xy_buf[0] = RNA_struct_property_is_set(op->ptr, "mx") ? RNA_int_get(op->ptr, "mx") : + region->winx / 2; + zoom_xy_buf[1] = RNA_struct_property_is_set(op->ptr, "my") ? RNA_int_get(op->ptr, "my") : + region->winy / 2; + zoom_xy = zoom_xy_buf; + } + + ED_view3d_dist_range_get(v3d, dist_range); + + if (delta < 0) { + const float step = 1.2f; + if (use_cam_zoom) { + view_zoom_to_window_xy_camera(scene, depsgraph, v3d, region, step, zoom_xy); + } + else { + if (rv3d->dist < dist_range[1]) { + view_zoom_to_window_xy_3d(region, step, zoom_xy); + } + } + } + else { + const float step = 1.0f / 1.2f; + if (use_cam_zoom) { + view_zoom_to_window_xy_camera(scene, depsgraph, v3d, region, step, zoom_xy); + } + else { + if (rv3d->dist > dist_range[0]) { + view_zoom_to_window_xy_3d(region, step, zoom_xy); + } + } + } + + if (RV3D_LOCK_FLAGS(rv3d) & RV3D_BOXVIEW) { + view3d_boxview_sync(area, region); + } + + ED_view3d_camera_lock_sync(depsgraph, v3d, rv3d); + ED_view3d_camera_lock_autokey(v3d, rv3d, C, false, true); + + ED_region_tag_redraw(region); + + viewops_data_free(C, op->customdata); + op->customdata = NULL; + + return OPERATOR_FINISHED; +} + +/* viewdolly_invoke() copied this function, changes here may apply there */ +static int viewzoom_invoke(bContext *C, wmOperator *op, const wmEvent *event) +{ + ViewOpsData *vod; + + const bool use_cursor_init = RNA_boolean_get(op->ptr, "use_cursor_init"); + + vod = op->customdata = viewops_data_create( + C, + event, + (viewops_flag_from_prefs() & ~VIEWOPS_FLAG_ORBIT_SELECT) | + (use_cursor_init ? VIEWOPS_FLAG_USE_MOUSE_INIT : 0)); + + ED_view3d_smooth_view_force_finish(C, vod->v3d, vod->region); + + /* if one or the other zoom position aren't set, set from event */ + if (!RNA_struct_property_is_set(op->ptr, "mx") || !RNA_struct_property_is_set(op->ptr, "my")) { + RNA_int_set(op->ptr, "mx", event->xy[0]); + RNA_int_set(op->ptr, "my", event->xy[1]); + } + + if (RNA_struct_property_is_set(op->ptr, "delta")) { + viewzoom_exec(C, op); + } + else { + if (ELEM(event->type, MOUSEZOOM, MOUSEPAN)) { + + if (U.uiflag & USER_ZOOM_HORIZ) { + vod->init.event_xy[0] = vod->prev.event_xy[0] = event->xy[0]; + } + else { + /* Set y move = x move as MOUSEZOOM uses only x axis to pass magnification value */ + vod->init.event_xy[1] = vod->prev.event_xy[1] = vod->init.event_xy[1] + event->xy[0] - + event->prev_xy[0]; + } + viewzoom_apply(vod, + event->prev_xy, + USER_ZOOM_DOLLY, + (U.uiflag & USER_ZOOM_INVERT) != 0, + (use_cursor_init && (U.uiflag & USER_ZOOM_TO_MOUSEPOS))); + ED_view3d_camera_lock_autokey(vod->v3d, vod->rv3d, C, false, true); + + viewops_data_free(C, op->customdata); + op->customdata = NULL; + return OPERATOR_FINISHED; + } + + if (U.viewzoom == USER_ZOOM_CONTINUE) { + /* needs a timer to continue redrawing */ + vod->timer = WM_event_add_timer(CTX_wm_manager(C), CTX_wm_window(C), TIMER, 0.01f); + vod->prev.time = PIL_check_seconds_timer(); + } + + /* add temp handler */ + WM_event_add_modal_handler(C, op); + + return OPERATOR_RUNNING_MODAL; + } + return OPERATOR_FINISHED; +} + +static void viewzoom_cancel(bContext *C, wmOperator *op) +{ + viewops_data_free(C, op->customdata); + op->customdata = NULL; +} + +void VIEW3D_OT_zoom(wmOperatorType *ot) +{ + /* identifiers */ + ot->name = "Zoom View"; + ot->description = "Zoom in/out in the view"; + ot->idname = "VIEW3D_OT_zoom"; + + /* api callbacks */ + ot->invoke = viewzoom_invoke; + ot->exec = viewzoom_exec; + ot->modal = viewzoom_modal; + ot->poll = view3d_zoom_or_dolly_poll; + ot->cancel = viewzoom_cancel; + + /* flags */ + ot->flag = OPTYPE_BLOCKING | OPTYPE_GRAB_CURSOR_XY; + + /* properties */ + view3d_operator_properties_common( + ot, V3D_OP_PROP_DELTA | V3D_OP_PROP_MOUSE_CO | V3D_OP_PROP_USE_MOUSE_INIT); +} + +/** \} */ |