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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 edgizmolib
*
* \name Primitive Gizmo
*
* 3D Gizmo
*
* \brief Gizmo with primitive drawing type (plane, cube, etc.).
* Currently only plane primitive supported without own handling, use with operator only.
*/
#include "MEM_guardedalloc.h"
#include "BLI_math.h"
#include "DNA_view3d_types.h"
#include "BKE_context.h"
#include "GPU_immediate.h"
#include "GPU_matrix.h"
#include "GPU_select.h"
#include "GPU_state.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "WM_api.h"
#include "WM_types.h"
#include "ED_gizmo_library.h"
/* own includes */
#include "../gizmo_library_intern.h"
static float verts_plane[4][3] = {
{-1, -1, 0},
{1, -1, 0},
{1, 1, 0},
{-1, 1, 0},
};
/* -------------------------------------------------------------------- */
static void gizmo_primitive_draw_geom(const float col_inner[4],
const float col_outer[4],
const int draw_style)
{
float(*verts)[3];
uint vert_count = 0;
if (draw_style == ED_GIZMO_PRIMITIVE_STYLE_PLANE) {
verts = verts_plane;
vert_count = ARRAY_SIZE(verts_plane);
}
if (vert_count > 0) {
uint pos = GPU_vertformat_attr_add(immVertexFormat(), "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
wm_gizmo_vec_draw(col_inner, verts, vert_count, pos, GPU_PRIM_TRI_FAN);
wm_gizmo_vec_draw(col_outer, verts, vert_count, pos, GPU_PRIM_LINE_LOOP);
immUnbindProgram();
}
}
static void gizmo_primitive_draw_intern(wmGizmo *gz,
const bool UNUSED(select),
const bool highlight)
{
float color_inner[4], color_outer[4];
float matrix_final[4][4];
const int draw_style = RNA_enum_get(gz->ptr, "draw_style");
gizmo_color_get(gz, highlight, color_outer);
copy_v4_v4(color_inner, color_outer);
color_inner[3] *= 0.5f;
WM_gizmo_calc_matrix_final(gz, matrix_final);
GPU_matrix_push();
GPU_matrix_mul(matrix_final);
GPU_blend(true);
gizmo_primitive_draw_geom(color_inner, color_outer, draw_style);
GPU_blend(false);
GPU_matrix_pop();
if (gz->interaction_data) {
GizmoInteraction *inter = gz->interaction_data;
copy_v4_fl(color_inner, 0.5f);
copy_v3_fl(color_outer, 0.5f);
color_outer[3] = 0.8f;
GPU_matrix_push();
GPU_matrix_mul(inter->init_matrix_final);
GPU_blend(true);
gizmo_primitive_draw_geom(color_inner, color_outer, draw_style);
GPU_blend(false);
GPU_matrix_pop();
}
}
static void gizmo_primitive_draw_select(const bContext *UNUSED(C), wmGizmo *gz, int select_id)
{
GPU_select_load_id(select_id);
gizmo_primitive_draw_intern(gz, true, false);
}
static void gizmo_primitive_draw(const bContext *UNUSED(C), wmGizmo *gz)
{
gizmo_primitive_draw_intern(gz, false, (gz->state & WM_GIZMO_STATE_HIGHLIGHT));
}
static void gizmo_primitive_setup(wmGizmo *gz)
{
gz->flag |= WM_GIZMO_DRAW_MODAL;
}
static int gizmo_primitive_invoke(bContext *UNUSED(C), wmGizmo *gz, const wmEvent *UNUSED(event))
{
GizmoInteraction *inter = MEM_callocN(sizeof(GizmoInteraction), __func__);
WM_gizmo_calc_matrix_final(gz, inter->init_matrix_final);
gz->interaction_data = inter;
return OPERATOR_RUNNING_MODAL;
}
/* -------------------------------------------------------------------- */
/** \name Primitive Gizmo API
*
* \{ */
static void GIZMO_GT_primitive_3d(wmGizmoType *gzt)
{
/* identifiers */
gzt->idname = "GIZMO_GT_primitive_3d";
/* api callbacks */
gzt->draw = gizmo_primitive_draw;
gzt->draw_select = gizmo_primitive_draw_select;
gzt->setup = gizmo_primitive_setup;
gzt->invoke = gizmo_primitive_invoke;
gzt->struct_size = sizeof(wmGizmo);
static EnumPropertyItem rna_enum_draw_style[] = {
{ED_GIZMO_PRIMITIVE_STYLE_PLANE, "PLANE", 0, "Plane", ""},
{0, NULL, 0, NULL, NULL},
};
RNA_def_enum(gzt->srna,
"draw_style",
rna_enum_draw_style,
ED_GIZMO_PRIMITIVE_STYLE_PLANE,
"Draw Style",
"");
}
void ED_gizmotypes_primitive_3d(void)
{
WM_gizmotype_append(GIZMO_GT_primitive_3d);
}
/** \} */
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