diff options
| -rw-r--r-- | source/blender/editors/gizmo_library/gizmo_types/cage2d_gizmo.c | 219 |
1 files changed, 216 insertions, 3 deletions
diff --git a/source/blender/editors/gizmo_library/gizmo_types/cage2d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/cage2d_gizmo.c index 08dbdd021d3..34d3f737f58 100644 --- a/source/blender/editors/gizmo_library/gizmo_types/cage2d_gizmo.c +++ b/source/blender/editors/gizmo_library/gizmo_types/cage2d_gizmo.c @@ -886,11 +886,224 @@ static int gizmo_cage2d_invoke(bContext *C, wmGizmo *gz, const wmEvent *event) return OPERATOR_RUNNING_MODAL; } -static int gizmo_cage2d_modal(bContext *UNUSED(C), - wmGizmo *UNUSED(gz), - const wmEvent *UNUSED(event), +static void gizmo_rect_pivot_from_scale_part(int part, float r_pt[2], bool r_constrain_axis[2]) +{ + bool x = true, y = true; + switch (part) { + case ED_GIZMO_CAGE2D_PART_SCALE_MIN_X: { + ARRAY_SET_ITEMS(r_pt, 0.5, 0.0); + x = false; + break; + } + case ED_GIZMO_CAGE2D_PART_SCALE_MAX_X: { + ARRAY_SET_ITEMS(r_pt, -0.5, 0.0); + x = false; + break; + } + case ED_GIZMO_CAGE2D_PART_SCALE_MIN_Y: { + ARRAY_SET_ITEMS(r_pt, 0.0, 0.5); + y = false; + break; + } + case ED_GIZMO_CAGE2D_PART_SCALE_MAX_Y: { + ARRAY_SET_ITEMS(r_pt, 0.0, -0.5); + y = false; + break; + } + case ED_GIZMO_CAGE2D_PART_SCALE_MIN_X_MIN_Y: { + ARRAY_SET_ITEMS(r_pt, 0.5, 0.5); + x = y = false; + break; + } + case ED_GIZMO_CAGE2D_PART_SCALE_MIN_X_MAX_Y: { + ARRAY_SET_ITEMS(r_pt, 0.5, -0.5); + x = y = false; + break; + } + case ED_GIZMO_CAGE2D_PART_SCALE_MAX_X_MIN_Y: { + ARRAY_SET_ITEMS(r_pt, -0.5, 0.5); + x = y = false; + break; + } + case ED_GIZMO_CAGE2D_PART_SCALE_MAX_X_MAX_Y: { + ARRAY_SET_ITEMS(r_pt, -0.5, -0.5); + x = y = false; + break; + } + default: + BLI_assert(0); + } + r_constrain_axis[0] = x; + r_constrain_axis[1] = y; +} + +static int gizmo_cage2d_modal(bContext *C, + wmGizmo *gz, + const wmEvent *event, eWM_GizmoFlagTweak UNUSED(tweak_flag)) { + if (event->type != MOUSEMOVE) { + return OPERATOR_RUNNING_MODAL; + } + /* For transform logic to be manageable we operate in -0.5..0.5 2D space, + * no matter the size of the rectangle, mouse coords are scaled to unit space. + * The mouse coords have been projected into the matrix + * so we don't need to worry about axis alignment. + * + * - The cursor offset are multiplied by 'dims'. + * - Matrix translation is also multiplied by 'dims'. + */ + RectTransformInteraction *data = gz->interaction_data; + float point_local[2]; + + float dims[2]; + RNA_float_get_array(gz->ptr, "dimensions", dims); + + { + float matrix_back[4][4]; + copy_m4_m4(matrix_back, gz->matrix_offset); + copy_m4_m4(gz->matrix_offset, data->orig_matrix_offset); + + bool ok = gizmo_window_project_2d( + C, gz, (const float[2]){UNPACK2(event->mval)}, 2, false, point_local); + copy_m4_m4(gz->matrix_offset, matrix_back); + if (!ok) { + return OPERATOR_RUNNING_MODAL; + } + } + + const int transform_flag = RNA_enum_get(gz->ptr, "transform"); + wmGizmoProperty *gz_prop; + + gz_prop = WM_gizmo_target_property_find(gz, "matrix"); + if (gz_prop->type != NULL) { + WM_gizmo_target_property_float_get_array(gz, gz_prop, &gz->matrix_offset[0][0]); + } + + if (gz->highlight_part == ED_GIZMO_CAGE2D_PART_TRANSLATE) { + /* do this to prevent clamping from changing size */ + copy_m4_m4(gz->matrix_offset, data->orig_matrix_offset); + gz->matrix_offset[3][0] = data->orig_matrix_offset[3][0] + + (point_local[0] - data->orig_mouse[0]); + gz->matrix_offset[3][1] = data->orig_matrix_offset[3][1] + + (point_local[1] - data->orig_mouse[1]); + } + else if (gz->highlight_part == ED_GIZMO_CAGE2D_PART_ROTATE) { + +#define MUL_V2_V3_M4_FINAL(test_co, mouse_co) \ + mul_v3_m4v3( \ + test_co, data->orig_matrix_final_no_offset, ((const float[3]){UNPACK2(mouse_co), 0.0})) + + float test_co[3]; + + if (data->dial == NULL) { + MUL_V2_V3_M4_FINAL(test_co, data->orig_matrix_offset[3]); + + data->dial = BLI_dial_init(test_co, FLT_EPSILON); + + MUL_V2_V3_M4_FINAL(test_co, data->orig_mouse); + BLI_dial_angle(data->dial, test_co); + } + + /* rotate */ + MUL_V2_V3_M4_FINAL(test_co, point_local); + const float angle = BLI_dial_angle(data->dial, test_co); + + float matrix_space_inv[4][4]; + float matrix_rotate[4][4]; + float pivot[3]; + + copy_v3_v3(pivot, data->orig_matrix_offset[3]); + + invert_m4_m4(matrix_space_inv, gz->matrix_space); + + unit_m4(matrix_rotate); + mul_m4_m4m4(matrix_rotate, matrix_rotate, matrix_space_inv); + rotate_m4(matrix_rotate, 'Z', -angle); + mul_m4_m4m4(matrix_rotate, matrix_rotate, gz->matrix_space); + + zero_v3(matrix_rotate[3]); + transform_pivot_set_m4(matrix_rotate, pivot); + + mul_m4_m4m4(gz->matrix_offset, matrix_rotate, data->orig_matrix_offset); + +#undef MUL_V2_V3_M4_FINAL + } + else { + /* scale */ + copy_m4_m4(gz->matrix_offset, data->orig_matrix_offset); + float pivot[2]; + bool constrain_axis[2] = {false}; + + if (transform_flag & ED_GIZMO_CAGE2D_XFORM_FLAG_TRANSLATE) { + gizmo_rect_pivot_from_scale_part(gz->highlight_part, pivot, constrain_axis); + } + else { + zero_v2(pivot); + } + + /* Cursor deltas scaled to (-0.5..0.5). */ + float delta_orig[2], delta_curr[2]; + for (int i = 0; i < 2; i++) { + delta_orig[i] = ((data->orig_mouse[i] - data->orig_matrix_offset[3][i]) / dims[i]) - + pivot[i]; + delta_curr[i] = ((point_local[i] - data->orig_matrix_offset[3][i]) / dims[i]) - pivot[i]; + } + + float scale[2] = {1.0f, 1.0f}; + for (int i = 0; i < 2; i++) { + if (constrain_axis[i] == false) { + if (delta_orig[i] < 0.0f) { + delta_orig[i] *= -1.0f; + delta_curr[i] *= -1.0f; + } + const int sign = signum_i(scale[i]); + + scale[i] = 1.0f + ((delta_curr[i] - delta_orig[i]) / len_v3(data->orig_matrix_offset[i])); + + if ((transform_flag & ED_GIZMO_CAGE2D_XFORM_FLAG_SCALE_SIGNED) == 0) { + if (sign != signum_i(scale[i])) { + scale[i] = 0.0f; + } + } + } + } + + if (transform_flag & ED_GIZMO_CAGE2D_XFORM_FLAG_SCALE_UNIFORM) { + if (constrain_axis[0] == false && constrain_axis[1] == false) { + scale[1] = scale[0] = (scale[1] + scale[0]) / 2.0f; + } + else if (constrain_axis[0] == false) { + scale[1] = scale[0]; + } + else if (constrain_axis[1] == false) { + scale[0] = scale[1]; + } + else { + BLI_assert(0); + } + } + + /* scale around pivot */ + float matrix_scale[4][4]; + unit_m4(matrix_scale); + + mul_v3_fl(matrix_scale[0], scale[0]); + mul_v3_fl(matrix_scale[1], scale[1]); + + transform_pivot_set_m4(matrix_scale, + (const float[3]){pivot[0] * dims[0], pivot[1] * dims[1], 0.0f}); + mul_m4_m4m4(gz->matrix_offset, data->orig_matrix_offset, matrix_scale); + } + + if (gz_prop->type != NULL) { + WM_gizmo_target_property_float_set_array(C, gz, gz_prop, &gz->matrix_offset[0][0]); + } + + /* tag the region for redraw */ + ED_region_tag_redraw_editor_overlays(CTX_wm_region(C)); + WM_event_add_mousemove(CTX_wm_window(C)); + return OPERATOR_RUNNING_MODAL; } |