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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file grab3d_manipulator.c
* \ingroup wm
*
* \name Grab Manipulator
*
* 3D Manipulator, also works in 2D views.
*
* \brief Simple manipulator to grab and translate.
*
* - `matrix[0]` is derived from Y and Z.
* - `matrix[1]` currently not used.
* - `matrix[2]` is the widget direction (for all manipulators).
*
*/
#include "MEM_guardedalloc.h"
#include "BLI_math.h"
#include "BKE_context.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
#include "GPU_immediate.h"
#include "GPU_immediate_util.h"
#include "GPU_matrix.h"
#include "GPU_select.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "WM_api.h"
#include "WM_types.h"
#include "ED_screen.h"
#include "ED_view3d.h"
#include "ED_manipulator_library.h"
/* own includes */
#include "../manipulator_geometry.h"
#include "../manipulator_library_intern.h"
typedef struct GrabManipulator3D {
wmManipulator manipulator;
/* Added to 'matrix_basis' when calculating the matrix. */
float prop_co[3];
} GrabManipulator3D;
static void manipulator_grab_matrix_basis_get(const wmManipulator *mpr, float r_matrix[4][4])
{
GrabManipulator3D *grab = (GrabManipulator3D *)mpr;
copy_m4_m4(r_matrix, grab->manipulator.matrix_basis);
add_v3_v3(r_matrix[3], grab->prop_co);
}
static int manipulator_grab_modal(
bContext *C, wmManipulator *mpr, const wmEvent *event,
eWM_ManipulatorTweak tweak_flag);
typedef struct GrabInteraction {
float init_mval[2];
/* only for when using properties */
float init_prop_co[3];
float init_matrix_final[4][4];
} GrabInteraction;
#define DIAL_RESOLUTION 32
/* -------------------------------------------------------------------- */
static void grab_geom_draw(
const wmManipulator *mpr, const float color[4], const bool select, const int draw_options)
{
#ifdef USE_MANIPULATOR_CUSTOM_DIAL
UNUSED_VARS(grab3d, col, axis_modal_mat);
wm_manipulator_geometryinfo_draw(&wm_manipulator_geom_data_grab3d, select);
#else
const int draw_style = RNA_enum_get(mpr->ptr, "draw_style");
const bool filled = (draw_options & ED_MANIPULATOR_GRAB_DRAW_FLAG_FILL) != 0;
glLineWidth(mpr->line_width);
Gwn_VertFormat *format = immVertexFormat();
uint pos = GWN_vertformat_attr_add(format, "pos", GWN_COMP_F32, 2, GWN_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
immUniformColor4fv(color);
if (draw_style == ED_MANIPULATOR_GRAB_STYLE_RING_2D) {
if (filled) {
imm_draw_circle_fill_2d(pos, 0, 0, 1.0f, DIAL_RESOLUTION);
}
else {
imm_draw_circle_wire_2d(pos, 0, 0, 1.0f, DIAL_RESOLUTION);
}
}
else if (draw_style == ED_MANIPULATOR_GRAB_STYLE_CROSS_2D) {
immBegin(GWN_PRIM_LINES, 4);
immVertex2f(pos, 1.0f, 1.0f);
immVertex2f(pos, -1.0f, -1.0f);
immVertex2f(pos, -1.0f, 1.0f);
immVertex2f(pos, 1.0f, -1.0f);
immEnd();
}
else {
BLI_assert(0);
}
immUnbindProgram();
UNUSED_VARS(select);
#endif
}
static void grab3d_get_translate(
const wmManipulator *mpr, const wmEvent *event, const ARegion *ar,
float co_delta[3])
{
GrabInteraction *inter = mpr->interaction_data;
const float mval_delta[2] = {
event->mval[0] - inter->init_mval[0],
event->mval[1] - inter->init_mval[1],
};
RegionView3D *rv3d = ar->regiondata;
float co_ref[3];
mul_v3_mat3_m4v3(co_ref, mpr->matrix_space, inter->init_prop_co);
const float zfac = ED_view3d_calc_zfac(rv3d, co_ref, NULL);
ED_view3d_win_to_delta(ar, mval_delta, co_delta, zfac);
float matrix_space_inv[3][3];
copy_m3_m4(matrix_space_inv, mpr->matrix_space);
invert_m3(matrix_space_inv);
mul_m3_v3(matrix_space_inv, co_delta);
}
static void grab3d_draw_intern(
const bContext *C, wmManipulator *mpr,
const bool select, const bool highlight)
{
GrabInteraction *inter = mpr->interaction_data;
const int draw_options = RNA_enum_get(mpr->ptr, "draw_options");
const bool align_view = (draw_options & ED_MANIPULATOR_GRAB_DRAW_FLAG_ALIGN_VIEW) != 0;
float color[4];
float matrix_final[4][4];
float matrix_align[4][4];
manipulator_color_get(mpr, highlight, color);
WM_manipulator_calc_matrix_final(mpr, matrix_final);
gpuPushMatrix();
gpuMultMatrix(matrix_final);
if (align_view) {
float matrix_final_unit[4][4];
RegionView3D *rv3d = CTX_wm_region_view3d(C);
normalize_m4_m4(matrix_final_unit, matrix_final);
mul_m4_m4m4(matrix_align, rv3d->viewmat, matrix_final_unit);
zero_v3(matrix_align[3]);
transpose_m4(matrix_align);
gpuMultMatrix(matrix_align);
}
glEnable(GL_BLEND);
grab_geom_draw(mpr, color, select, draw_options);
glDisable(GL_BLEND);
gpuPopMatrix();
if (mpr->interaction_data) {
gpuPushMatrix();
gpuMultMatrix(inter->init_matrix_final);
if (align_view) {
gpuMultMatrix(matrix_align);
}
glEnable(GL_BLEND);
grab_geom_draw(mpr, (const float [4]){0.5f, 0.5f, 0.5f, 0.5f}, select, draw_options);
glDisable(GL_BLEND);
gpuPopMatrix();
}
}
static void manipulator_grab_draw_select(const bContext *C, wmManipulator *mpr, int select_id)
{
GPU_select_load_id(select_id);
grab3d_draw_intern(C, mpr, true, false);
}
static void manipulator_grab_draw(const bContext *C, wmManipulator *mpr)
{
const bool is_modal = mpr->state & WM_MANIPULATOR_STATE_MODAL;
const bool is_highlight = (mpr->state & WM_MANIPULATOR_STATE_HIGHLIGHT) != 0;
(void)is_modal;
glEnable(GL_BLEND);
grab3d_draw_intern(C, mpr, false, is_highlight);
glDisable(GL_BLEND);
}
static int manipulator_grab_modal(
bContext *C, wmManipulator *mpr, const wmEvent *event,
eWM_ManipulatorTweak UNUSED(tweak_flag))
{
GrabManipulator3D *grab = (GrabManipulator3D *)mpr;
GrabInteraction *inter = mpr->interaction_data;
ARegion *ar = CTX_wm_region(C);
float prop_delta[3];
if (CTX_wm_area(C)->spacetype == SPACE_VIEW3D) {
grab3d_get_translate(mpr, event, ar, prop_delta);
}
else {
float mval_proj_init[2], mval_proj_curr[2];
if ((manipulator_window_project_2d(
C, mpr, inter->init_mval, 2, false, mval_proj_init) == false) ||
(manipulator_window_project_2d(
C, mpr, (const float[2]){UNPACK2(event->mval)}, 2, false, mval_proj_curr) == false))
{
return OPERATOR_RUNNING_MODAL;
}
sub_v2_v2v2(prop_delta, mval_proj_curr, mval_proj_init);
prop_delta[2] = 0.0f;
}
add_v3_v3v3(grab->prop_co, inter->init_prop_co, prop_delta);
/* set the property for the operator and call its modal function */
wmManipulatorProperty *mpr_prop = WM_manipulator_target_property_find(mpr, "offset");
if (WM_manipulator_target_property_is_valid(mpr_prop)) {
WM_manipulator_target_property_value_set_array(C, mpr, mpr_prop, grab->prop_co);
}
else {
zero_v3(grab->prop_co);
}
ED_region_tag_redraw(ar);
return OPERATOR_RUNNING_MODAL;
}
static int manipulator_grab_invoke(
bContext *UNUSED(C), wmManipulator *mpr, const wmEvent *event)
{
GrabInteraction *inter = MEM_callocN(sizeof(GrabInteraction), __func__);
inter->init_mval[0] = event->mval[0];
inter->init_mval[1] = event->mval[1];
#if 0
copy_v3_v3(inter->init_prop_co, grab->prop_co);
#else
wmManipulatorProperty *mpr_prop = WM_manipulator_target_property_find(mpr, "offset");
if (WM_manipulator_target_property_is_valid(mpr_prop)) {
WM_manipulator_target_property_value_get_array(mpr, mpr_prop, inter->init_prop_co);
}
#endif
WM_manipulator_calc_matrix_final(mpr, inter->init_matrix_final);
mpr->interaction_data = inter;
return OPERATOR_RUNNING_MODAL;
}
static int manipulator_grab_test_select(
bContext *C, wmManipulator *mpr, const wmEvent *event)
{
float point_local[2];
if (manipulator_window_project_2d(
C, mpr, (const float[2]){UNPACK2(event->mval)}, 2, true, point_local) == false)
{
return -1;
}
if (len_squared_v2(point_local) < SQUARE(mpr->scale_final)) {
return 0;
}
return -1;
}
static void manipulator_grab_property_update(wmManipulator *mpr, wmManipulatorProperty *mpr_prop)
{
GrabManipulator3D *grab = (GrabManipulator3D *)mpr;
if (WM_manipulator_target_property_is_valid(mpr_prop)) {
WM_manipulator_target_property_value_get_array(mpr, mpr_prop, grab->prop_co);
}
else {
zero_v3(grab->prop_co);
}
}
static int manipulator_grab_cursor_get(wmManipulator *UNUSED(mpr))
{
return BC_HANDCURSOR;
}
/* -------------------------------------------------------------------- */
/** \name Grab Manipulator API
*
* \{ */
static void MANIPULATOR_WT_grab_3d(wmManipulatorType *wt)
{
/* identifiers */
wt->idname = "MANIPULATOR_WT_grab_3d";
/* api callbacks */
wt->draw = manipulator_grab_draw;
wt->draw_select = manipulator_grab_draw_select;
wt->test_select = manipulator_grab_test_select;
wt->matrix_basis_get = manipulator_grab_matrix_basis_get;
wt->invoke = manipulator_grab_invoke;
wt->property_update = manipulator_grab_property_update;
wt->modal = manipulator_grab_modal;
wt->cursor_get = manipulator_grab_cursor_get;
wt->struct_size = sizeof(GrabManipulator3D);
/* rna */
static EnumPropertyItem rna_enum_draw_style[] = {
{ED_MANIPULATOR_GRAB_STYLE_RING_2D, "RING_2D", 0, "Ring", ""},
{ED_MANIPULATOR_GRAB_STYLE_CROSS_2D, "CROSS_2D", 0, "Ring", ""},
{0, NULL, 0, NULL, NULL}
};
static EnumPropertyItem rna_enum_draw_options[] = {
{ED_MANIPULATOR_GRAB_DRAW_FLAG_FILL, "FILL", 0, "Filled", ""},
{ED_MANIPULATOR_GRAB_DRAW_FLAG_ALIGN_VIEW, "ALIGN_VIEW", 0, "Align View", ""},
{0, NULL, 0, NULL, NULL}
};
RNA_def_enum(wt->srna, "draw_style", rna_enum_draw_style, ED_MANIPULATOR_GRAB_STYLE_RING_2D, "Draw Style", "");
RNA_def_enum_flag(wt->srna, "draw_options", rna_enum_draw_options, 0, "Draw Options", "");
WM_manipulatortype_target_property_def(wt, "offset", PROP_FLOAT, 3);
}
void ED_manipulatortypes_grab_3d(void)
{
WM_manipulatortype_append(MANIPULATOR_WT_grab_3d);
}
/** \} */ // Grab Manipulator API
|