mirrored from https://projects.blender.org/blender/blender.git
/
editmesh_knife.cc
4984 lines (4223 loc) · 146 KB
/
editmesh_knife.cc
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/* SPDX-FileCopyrightText: 2007 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup edmesh
*
* Interactive editmesh knife tool.
*/
#ifdef _MSC_VER
# define _USE_MATH_DEFINES
#endif
#include <fmt/format.h>
#include "MEM_guardedalloc.h"
#include "BLF_api.hh"
#include "BLI_alloca.h"
#include "BLI_linklist.h"
#include "BLI_listbase.h"
#include "BLI_map.hh"
#include "BLI_math_color.h"
#include "BLI_math_matrix.h"
#include "BLI_math_rotation.h"
#include "BLI_math_vector_types.hh"
#include "BLI_memarena.h"
#include "BLI_set.hh"
#include "BLI_stack.h"
#include "BLI_string.h"
#include "BLI_vector.hh"
#include "BLT_translation.hh"
#include "BKE_bvhutils.hh"
#include "BKE_context.hh"
#include "BKE_editmesh.hh"
#include "BKE_layer.hh"
#include "BKE_report.hh"
#include "BKE_scene.hh"
#include "BKE_unit.hh"
#include "GPU_immediate.hh"
#include "GPU_matrix.hh"
#include "GPU_state.hh"
#include "ED_mesh.hh"
#include "ED_numinput.hh"
#include "ED_screen.hh"
#include "ED_space_api.hh"
#include "ED_transform.hh"
#include "ED_view3d.hh"
#include "WM_api.hh"
#include "WM_types.hh"
#include "DNA_object_types.h"
#include "UI_interface.hh"
#include "UI_resources.hh"
#include "RNA_access.hh"
#include "RNA_define.hh"
#include "DEG_depsgraph.hh"
#include "DEG_depsgraph_query.hh"
#include "mesh_intern.hh" /* Own include. */
using namespace blender;
/* Detect isolated holes and fill them. */
#define USE_NET_ISLAND_CONNECT
#define KMAXDIST (10 * UI_SCALE_FAC) /* Max mouse distance from edge before not detecting it. */
/* WARNING: Knife float precision is fragile:
* Be careful before making changes here see: (#43229, #42864, #42459, #41164).
*/
#define KNIFE_FLT_EPS 0.00001f
#define KNIFE_FLT_EPS_SQUARED (KNIFE_FLT_EPS * KNIFE_FLT_EPS)
#define KNIFE_FLT_EPSBIG 0.0005f
#define KNIFE_FLT_EPS_PX_VERT 0.5f
#define KNIFE_FLT_EPS_PX_EDGE 0.05f
#define KNIFE_FLT_EPS_PX_FACE 0.05f
#define KNIFE_DEFAULT_ANGLE_SNAPPING_INCREMENT 30.0f
#define KNIFE_MIN_ANGLE_SNAPPING_INCREMENT 0.0f
#define KNIFE_MAX_ANGLE_SNAPPING_INCREMENT 180.0f
struct KnifeColors {
uchar line[3];
uchar edge[3];
uchar edge_extra[3];
uchar curpoint[3];
uchar curpoint_a[4];
uchar point[3];
uchar point_a[4];
uchar xaxis[3];
uchar yaxis[3];
uchar zaxis[3];
uchar axis_extra[3];
};
/* Knife-tool Operator. */
struct KnifeVert {
BMVert *v; /* Non-null if this is an original vert. */
ListBase edges;
ListBase faces;
/* Index of the associated object.
* -1 represents the absence of an object. */
int ob_index;
float co[3], cageco[3];
bool is_cut; /* Along a cut created by user input (will draw too). */
bool is_invalid;
bool is_splitting; /* Created when an edge was split. */
};
struct KnifeEdge {
KnifeVert *v1, *v2;
BMFace *basef; /* Face to restrict face fill to. */
ListBase faces;
BMEdge *e; /* Non-null if this is an original edge. */
bool is_cut; /* Along a cut created by user input (will draw too). */
bool is_invalid;
int splits; /* Number of times this edge has been split. */
};
struct KnifeLineHit {
float hit[3], cagehit[3];
float schit[2]; /* Screen coordinates for cagehit. */
float l; /* Lambda along cut line. */
float m; /* Depth front-to-back. */
/* Exactly one of kfe, v, or f should be non-null,
* saying whether cut line crosses and edge,
* is snapped to a vert, or is in the middle of some face. */
KnifeEdge *kfe;
KnifeVert *v;
BMFace *f;
/* Index of the associated object.
* -1 represents the absence of an object. */
int ob_index;
};
struct KnifePosData {
float3 cage;
/* At most one of vert, edge, or bmface should be non-null,
* saying whether the point is snapped to a vertex, edge, or in a face.
* If none are set, this point is in space and is_space should be true. */
KnifeVert *vert;
KnifeEdge *edge;
BMFace *bmface;
/* Index of the associated object.
* -1 represents the absence of an object. */
int ob_index;
float2 mval; /* Mouse screen position (may be non-integral if snapped to something). */
bool is_space() const
{
return this->ob_index == -1;
}
};
struct KnifeMeasureData {
float cage[3];
float mval[2];
bool is_stored;
};
struct KnifeUndoFrame {
int cuts; /* Line hits cause multiple edges/cuts to be created at once. */
int splits; /* Number of edges split. */
KnifePosData pos; /* Store previous KnifePosData. */
KnifeMeasureData mdata;
};
struct KnifeBVH {
BVHTree *tree; /* Knife Custom BVH Tree. */
/* Used by #knife_bvh_raycast_cb to store the intersecting triangles. */
blender::Span<std::array<BMLoop *, 3>> looptris;
int ob_index;
/* Use #bm_ray_cast_cb_elem_not_in_face_check. */
bool (*filter_cb)(BMFace *f, void *userdata);
void *filter_data;
};
/** Additional per-object data. */
struct KnifeObjectInfo {
Array<float3> positions_cage;
/**
* Optionally allocate triangle indices, these are needed for non-interactive knife
* projection as multiple cuts are made without the BVH being updated.
* Using these indices the it's possible to access `cagecos` even if the face has been cut
* and the loops in `em->looptris` no longer refer to the original triangles, see: #97153.
*/
Array<int3> tri_indices;
/** Only assigned for convenient access. */
BMEditMesh *em;
};
enum KnifeMode { MODE_IDLE, MODE_DRAGGING, MODE_CONNECT, MODE_PANNING };
/* struct for properties used while drawing */
struct KnifeTool_OpData {
ARegion *region; /* Region that knifetool was activated in. */
void *draw_handle; /* For drawing preview loop. */
ViewContext vc; /* NOTE: _don't_ use 'mval', instead use the one we define below. */
float mval[2]; /* Mouse value with snapping applied. */
Scene *scene;
/* Used for swapping current object when in multi-object edit mode. */
Vector<Object *> objects;
/** Array `objects_len` length of additional per-object data. */
Array<KnifeObjectInfo> objects_info;
MemArena *arena;
/* Reused for edge-net filling. */
struct {
/* Cleared each use. */
GSet *edge_visit;
#ifdef USE_NET_ISLAND_CONNECT
MemArena *arena;
#endif
} edgenet;
GHash *origvertmap;
GHash *origedgemap;
GHash *kedgefacemap;
GHash *facetrimap;
KnifeBVH bvh;
BLI_mempool *kverts;
BLI_mempool *kedges;
bool no_cuts; /* A cut has not been made yet. */
BLI_Stack *undostack;
BLI_Stack *splitstack; /* Store edge splits by #knife_split_edge. */
float vthresh;
float ethresh;
/* Used for drag-cutting. */
Vector<KnifeLineHit> linehits;
/* Data for mouse-position-derived data. */
KnifePosData curr; /* Current point under the cursor. */
KnifePosData prev; /* Last added cut (a line draws from the cursor to this). */
KnifePosData init; /* The first point in the cut-list, used for closing the loop. */
/* Number of knife edges `kedges`. */
int totkedge;
/* Number of knife vertices, `kverts`. */
int totkvert;
BLI_mempool *refs;
KnifeColors colors;
/* Run by the UI or not. */
bool is_interactive;
/* Operator options. */
bool cut_through; /* Preference, can be modified at runtime (that feature may go). */
bool only_select; /* Set on initialization. */
bool select_result; /* Set on initialization. */
bool is_ortho;
float ortho_extent;
float ortho_extent_center[3];
float clipsta, clipend;
enum KnifeMode mode;
bool is_drag_hold;
int prevmode;
bool snap_midpoints;
bool ignore_edge_snapping;
bool ignore_vert_snapping;
NumInput num;
float angle_snapping_increment; /* Degrees */
/* Use to check if we're currently dragging an angle snapped line. */
short angle_snapping_mode;
bool is_angle_snapping;
bool angle_snapping;
float angle;
/* Relative angle snapping reference edge. */
KnifeEdge *snap_ref_edge;
int snap_ref_edges_count;
int snap_edge; /* Used by #KNF_MODAL_CYCLE_ANGLE_SNAP_EDGE to choose an edge for snapping. */
short constrain_axis;
short constrain_axis_mode;
bool axis_constrained;
char axis_string[2];
short dist_angle_mode;
bool show_dist_angle;
KnifeMeasureData mdata; /* Data for distance and angle drawing calculations. */
KnifeUndoFrame *undo; /* Current undo frame. */
bool is_drag_undo;
bool depth_test;
};
enum {
KNF_MODAL_CANCEL = 1,
KNF_MODAL_CONFIRM,
KNF_MODAL_UNDO,
KNF_MODAL_MIDPOINT_ON,
KNF_MODAL_MIDPOINT_OFF,
KNF_MODAL_NEW_CUT,
KNF_MODAL_IGNORE_SNAP_ON,
KNF_MODAL_IGNORE_SNAP_OFF,
KNF_MODAL_ADD_CUT,
KNF_MODAL_ANGLE_SNAP_TOGGLE,
KNF_MODAL_CYCLE_ANGLE_SNAP_EDGE,
KNF_MODAL_CUT_THROUGH_TOGGLE,
KNF_MODAL_SHOW_DISTANCE_ANGLE_TOGGLE,
KNF_MODAL_DEPTH_TEST_TOGGLE,
KNF_MODAL_PANNING,
KNF_MODAL_X_AXIS,
KNF_MODAL_Y_AXIS,
KNF_MODAL_Z_AXIS,
KNF_MODAL_ADD_CUT_CLOSED,
};
enum {
KNF_CONSTRAIN_ANGLE_MODE_NONE = 0,
KNF_CONSTRAIN_ANGLE_MODE_SCREEN = 1,
KNF_CONSTRAIN_ANGLE_MODE_RELATIVE = 2
};
enum {
KNF_CONSTRAIN_AXIS_NONE = 0,
KNF_CONSTRAIN_AXIS_X = 1,
KNF_CONSTRAIN_AXIS_Y = 2,
KNF_CONSTRAIN_AXIS_Z = 3
};
enum {
KNF_CONSTRAIN_AXIS_MODE_NONE = 0,
KNF_CONSTRAIN_AXIS_MODE_GLOBAL = 1,
KNF_CONSTRAIN_AXIS_MODE_LOCAL = 2
};
enum {
KNF_MEASUREMENT_NONE = 0,
KNF_MEASUREMENT_BOTH = 1,
KNF_MEASUREMENT_DISTANCE = 2,
KNF_MEASUREMENT_ANGLE = 3
};
/* -------------------------------------------------------------------- */
/** \name Drawing
* \{ */
static void knifetool_raycast_planes(const KnifeTool_OpData *kcd, float r_v1[3], float r_v2[3])
{
float planes[4][4];
planes_from_projmat(
kcd->vc.rv3d->persmat, planes[2], planes[0], planes[1], planes[3], nullptr, nullptr);
/* Ray-cast all planes. */
float ray_dir[3];
float ray_hit_best[2][3] = {{UNPACK3(kcd->prev.cage)}, {UNPACK3(kcd->curr.cage)}};
float lambda_best[2] = {-FLT_MAX, FLT_MAX};
int i;
{
float curr_cage_adjust[3];
float co_depth[3];
copy_v3_v3(co_depth, kcd->prev.cage);
ED_view3d_win_to_3d(kcd->vc.v3d, kcd->region, co_depth, kcd->curr.mval, curr_cage_adjust);
sub_v3_v3v3(ray_dir, curr_cage_adjust, kcd->prev.cage);
}
for (i = 0; i < 4; i++) {
float ray_hit[3];
float lambda_test;
if (!isect_ray_plane_v3(kcd->prev.cage, ray_dir, planes[i], &lambda_test, false)) {
continue;
}
madd_v3_v3v3fl(ray_hit, kcd->prev.cage, ray_dir, lambda_test);
if (lambda_test < 0.0f) {
if (lambda_test > lambda_best[0]) {
copy_v3_v3(ray_hit_best[0], ray_hit);
lambda_best[0] = lambda_test;
}
}
else {
if (lambda_test < lambda_best[1]) {
copy_v3_v3(ray_hit_best[1], ray_hit);
lambda_best[1] = lambda_test;
}
}
}
copy_v3_v3(r_v1, ray_hit_best[0]);
copy_v3_v3(r_v2, ray_hit_best[1]);
}
static void knifetool_draw_angle_snapping(const KnifeTool_OpData *kcd)
{
float v1[3], v2[3];
knifetool_raycast_planes(kcd, v1, v2);
uint pos = GPU_vertformat_attr_add(immVertexFormat(), "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
immUniformThemeColor3(TH_TRANSFORM);
GPU_line_width(2.0);
immBegin(GPU_PRIM_LINES, 2);
immVertex3fv(pos, v1);
immVertex3fv(pos, v2);
immEnd();
immUnbindProgram();
}
static void knifetool_draw_orientation_locking(const KnifeTool_OpData *kcd)
{
if (compare_v3v3(kcd->prev.cage, kcd->curr.cage, KNIFE_FLT_EPSBIG)) {
return;
}
float v1[3], v2[3];
/* This is causing buggy behavior when `prev.cage` and `curr.cage` are too close together. */
knifetool_raycast_planes(kcd, v1, v2);
uint pos = GPU_vertformat_attr_add(immVertexFormat(), "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
switch (kcd->constrain_axis) {
case KNF_CONSTRAIN_AXIS_X: {
immUniformColor3ubv(kcd->colors.xaxis);
break;
}
case KNF_CONSTRAIN_AXIS_Y: {
immUniformColor3ubv(kcd->colors.yaxis);
break;
}
case KNF_CONSTRAIN_AXIS_Z: {
immUniformColor3ubv(kcd->colors.zaxis);
break;
}
default: {
immUniformColor3ubv(kcd->colors.axis_extra);
break;
}
}
GPU_line_width(2.0);
immBegin(GPU_PRIM_LINES, 2);
immVertex3fv(pos, v1);
immVertex3fv(pos, v2);
immEnd();
immUnbindProgram();
}
static void knifetool_draw_visible_distances(const KnifeTool_OpData *kcd)
{
GPU_matrix_push_projection();
GPU_matrix_push();
GPU_matrix_identity_set();
wmOrtho2_region_pixelspace(kcd->region);
uint pos = GPU_vertformat_attr_add(immVertexFormat(), "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
char numstr[256];
float numstr_size[2];
float posit[2];
const float bg_margin = 4.0f * UI_SCALE_FAC;
const float font_size = 14.0f;
const int distance_precision = 4;
/* Calculate distance and convert to string. */
const float cut_len = len_v3v3(kcd->prev.cage, kcd->curr.cage);
const UnitSettings *unit = &kcd->scene->unit;
if (unit->system == USER_UNIT_NONE) {
SNPRINTF(numstr, "%.*f", distance_precision, cut_len);
}
else {
BKE_unit_value_as_string(numstr,
sizeof(numstr),
double(cut_len * unit->scale_length),
distance_precision,
B_UNIT_LENGTH,
unit,
false);
}
BLF_enable(blf_mono_font, BLF_ROTATION);
BLF_size(blf_mono_font, font_size * UI_SCALE_FAC);
BLF_rotation(blf_mono_font, 0.0f);
BLF_width_and_height(blf_mono_font, numstr, sizeof(numstr), &numstr_size[0], &numstr_size[1]);
/* Center text. */
mid_v2_v2v2(posit, kcd->prev.mval, kcd->curr.mval);
posit[0] -= numstr_size[0] / 2.0f;
posit[1] -= numstr_size[1] / 2.0f;
/* Draw text background. */
float color_back[4] = {0.0f, 0.0f, 0.0f, 0.5f}; /* TODO: Replace with theme color. */
immUniformColor4fv(color_back);
GPU_blend(GPU_BLEND_ALPHA);
immRectf(pos,
posit[0] - bg_margin,
posit[1] - bg_margin,
posit[0] + bg_margin + numstr_size[0],
posit[1] + bg_margin + numstr_size[1]);
GPU_blend(GPU_BLEND_NONE);
immUnbindProgram();
/* Draw text. */
uchar color_text[3];
UI_GetThemeColor3ubv(TH_TEXT, color_text);
BLF_color3ubv(blf_mono_font, color_text);
BLF_position(blf_mono_font, posit[0], posit[1], 0.0f);
BLF_draw(blf_mono_font, numstr, sizeof(numstr));
BLF_disable(blf_mono_font, BLF_ROTATION);
GPU_matrix_pop();
GPU_matrix_pop_projection();
}
static void knifetool_draw_angle(const KnifeTool_OpData *kcd,
const float start[3],
const float mid[3],
const float end[3],
const float start_ss[2],
const float mid_ss[2],
const float end_ss[2],
const float angle)
{
const RegionView3D *rv3d = static_cast<const RegionView3D *>(kcd->region->regiondata);
const int arc_steps = 24;
const float arc_size = 64.0f * UI_SCALE_FAC;
const float bg_margin = 4.0f * UI_SCALE_FAC;
const float cap_size = 4.0f * UI_SCALE_FAC;
const float font_size = 14.0f;
const int angle_precision = 3;
/* Angle arc in 3d space. */
GPU_blend(GPU_BLEND_ALPHA);
const uint pos_3d = GPU_vertformat_attr_add(
immVertexFormat(), "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
{
float dir_tmp[3];
float ar_coord[3];
float dir_a[3];
float dir_b[3];
float quat[4];
float axis[3];
float arc_angle;
Object *ob = kcd->objects[kcd->bvh.ob_index];
const float inverse_average_scale = 1 / (ob->object_to_world().ptr()[0][0] +
ob->object_to_world().ptr()[1][1] +
ob->object_to_world().ptr()[2][2]);
const float px_scale =
3.0f * inverse_average_scale *
(ED_view3d_pixel_size_no_ui_scale(rv3d, mid) *
min_fff(arc_size, len_v2v2(start_ss, mid_ss) / 2.0f, len_v2v2(end_ss, mid_ss) / 2.0f));
sub_v3_v3v3(dir_a, start, mid);
sub_v3_v3v3(dir_b, end, mid);
normalize_v3(dir_a);
normalize_v3(dir_b);
cross_v3_v3v3(axis, dir_a, dir_b);
arc_angle = angle_normalized_v3v3(dir_a, dir_b);
axis_angle_to_quat(quat, axis, arc_angle / arc_steps);
copy_v3_v3(dir_tmp, dir_a);
immUniformThemeColor3(TH_WIRE);
GPU_line_width(1.0);
immBegin(GPU_PRIM_LINE_STRIP, arc_steps + 1);
for (int j = 0; j <= arc_steps; j++) {
madd_v3_v3v3fl(ar_coord, mid, dir_tmp, px_scale);
mul_qt_v3(quat, dir_tmp);
immVertex3fv(pos_3d, ar_coord);
}
immEnd();
}
immUnbindProgram();
/* Angle text and background in 2d space. */
GPU_matrix_push_projection();
GPU_matrix_push();
GPU_matrix_identity_set();
wmOrtho2_region_pixelspace(kcd->region);
uint pos_2d = GPU_vertformat_attr_add(
immVertexFormat(), "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
/* Angle as string. */
char numstr[256];
float numstr_size[2];
float posit[2];
const UnitSettings *unit = &kcd->scene->unit;
if (unit->system == USER_UNIT_NONE) {
SNPRINTF(numstr, "%.*f" BLI_STR_UTF8_DEGREE_SIGN, angle_precision, RAD2DEGF(angle));
}
else {
BKE_unit_value_as_string(
numstr, sizeof(numstr), double(angle), angle_precision, B_UNIT_ROTATION, unit, false);
}
BLF_enable(blf_mono_font, BLF_ROTATION);
BLF_size(blf_mono_font, font_size * UI_SCALE_FAC);
BLF_rotation(blf_mono_font, 0.0f);
BLF_width_and_height(blf_mono_font, numstr, sizeof(numstr), &numstr_size[0], &numstr_size[1]);
posit[0] = mid_ss[0] + (cap_size * 2.0f);
posit[1] = mid_ss[1] - (numstr_size[1] / 2.0f);
/* Draw text background. */
float color_back[4] = {0.0f, 0.0f, 0.0f, 0.5f}; /* TODO: Replace with theme color. */
immUniformColor4fv(color_back);
GPU_blend(GPU_BLEND_ALPHA);
immRectf(pos_2d,
posit[0] - bg_margin,
posit[1] - bg_margin,
posit[0] + bg_margin + numstr_size[0],
posit[1] + bg_margin + numstr_size[1]);
GPU_blend(GPU_BLEND_NONE);
immUnbindProgram();
/* Draw text. */
uchar color_text[3];
UI_GetThemeColor3ubv(TH_TEXT, color_text);
BLF_color3ubv(blf_mono_font, color_text);
BLF_position(blf_mono_font, posit[0], posit[1], 0.0f);
BLF_rotation(blf_mono_font, 0.0f);
BLF_draw(blf_mono_font, numstr, sizeof(numstr));
BLF_disable(blf_mono_font, BLF_ROTATION);
GPU_matrix_pop();
GPU_matrix_pop_projection();
GPU_blend(GPU_BLEND_NONE);
}
static void knifetool_draw_visible_angles(const KnifeTool_OpData *kcd)
{
KnifeVert *kfv;
KnifeVert *tempkfv;
KnifeEdge *kfe;
KnifeEdge *tempkfe;
if (kcd->curr.vert) {
kfv = kcd->curr.vert;
float min_angle = FLT_MAX;
float angle = 0.0f;
float *end;
kfe = static_cast<KnifeEdge *>(((LinkData *)kfv->edges.first)->data);
LISTBASE_FOREACH (LinkData *, ref, &kfv->edges) {
tempkfe = static_cast<KnifeEdge *>(ref->data);
if (tempkfe->v1 != kfv) {
tempkfv = tempkfe->v1;
}
else {
tempkfv = tempkfe->v2;
}
angle = angle_v3v3v3(kcd->prev.cage, kcd->curr.cage, tempkfv->cageco);
if (angle < min_angle) {
min_angle = angle;
kfe = tempkfe;
end = tempkfv->cageco;
}
}
if (min_angle > KNIFE_FLT_EPSBIG) {
/* Last vertex in screen space. */
float end_ss[2];
ED_view3d_project_float_global(kcd->region, end, end_ss, V3D_PROJ_TEST_NOP);
knifetool_draw_angle(kcd,
kcd->prev.cage,
kcd->curr.cage,
end,
kcd->prev.mval,
kcd->curr.mval,
end_ss,
min_angle);
}
}
else if (kcd->curr.edge) {
kfe = kcd->curr.edge;
/* Check for most recent cut (if cage is part of previous cut). */
if (!compare_v3v3(kfe->v1->cageco, kcd->prev.cage, KNIFE_FLT_EPSBIG) &&
!compare_v3v3(kfe->v2->cageco, kcd->prev.cage, KNIFE_FLT_EPSBIG))
{
/* Determine acute angle. */
float angle1 = angle_v3v3v3(kcd->prev.cage, kcd->curr.cage, kfe->v1->cageco);
float angle2 = angle_v3v3v3(kcd->prev.cage, kcd->curr.cage, kfe->v2->cageco);
float angle;
float *end;
if (angle1 < angle2) {
angle = angle1;
end = kfe->v1->cageco;
}
else {
angle = angle2;
end = kfe->v2->cageco;
}
/* Last vertex in screen space. */
float end_ss[2];
ED_view3d_project_float_global(kcd->region, end, end_ss, V3D_PROJ_TEST_NOP);
knifetool_draw_angle(
kcd, kcd->prev.cage, kcd->curr.cage, end, kcd->prev.mval, kcd->curr.mval, end_ss, angle);
}
}
if (kcd->prev.vert) {
kfv = kcd->prev.vert;
float min_angle = FLT_MAX;
float angle = 0.0f;
float *end;
/* If using relative angle snapping, always draw angle to reference edge. */
if (kcd->is_angle_snapping && kcd->angle_snapping_mode == KNF_CONSTRAIN_ANGLE_MODE_RELATIVE) {
kfe = kcd->snap_ref_edge;
if (kfe->v1 != kfv) {
tempkfv = kfe->v1;
}
else {
tempkfv = kfe->v2;
}
min_angle = angle_v3v3v3(kcd->curr.cage, kcd->prev.cage, tempkfv->cageco);
end = tempkfv->cageco;
}
else {
/* Choose minimum angle edge. */
kfe = static_cast<KnifeEdge *>(((LinkData *)kfv->edges.first)->data);
LISTBASE_FOREACH (LinkData *, ref, &kfv->edges) {
tempkfe = static_cast<KnifeEdge *>(ref->data);
if (tempkfe->v1 != kfv) {
tempkfv = tempkfe->v1;
}
else {
tempkfv = tempkfe->v2;
}
angle = angle_v3v3v3(kcd->curr.cage, kcd->prev.cage, tempkfv->cageco);
if (angle < min_angle) {
min_angle = angle;
kfe = tempkfe;
end = tempkfv->cageco;
}
}
}
if (min_angle > KNIFE_FLT_EPSBIG) {
/* Last vertex in screen space. */
float end_ss[2];
ED_view3d_project_float_global(kcd->region, end, end_ss, V3D_PROJ_TEST_NOP);
knifetool_draw_angle(kcd,
kcd->curr.cage,
kcd->prev.cage,
end,
kcd->curr.mval,
kcd->prev.mval,
end_ss,
min_angle);
}
}
else if (kcd->prev.edge) {
/* Determine acute angle. */
kfe = kcd->prev.edge;
float angle1 = angle_v3v3v3(kcd->curr.cage, kcd->prev.cage, kfe->v1->cageco);
float angle2 = angle_v3v3v3(kcd->curr.cage, kcd->prev.cage, kfe->v2->cageco);
float angle;
float *end;
/* kcd->prev.edge can have one vertex part of cut and one part of mesh? */
/* This never seems to happen for kcd->curr.edge. */
if ((!kcd->prev.vert || kcd->prev.vert->v == kfe->v1->v) || kfe->v1->is_cut) {
angle = angle2;
end = kfe->v2->cageco;
}
else if ((!kcd->prev.vert || kcd->prev.vert->v == kfe->v2->v) || kfe->v2->is_cut) {
angle = angle1;
end = kfe->v1->cageco;
}
else {
if (angle1 < angle2) {
angle = angle1;
end = kfe->v1->cageco;
}
else {
angle = angle2;
end = kfe->v2->cageco;
}
}
/* Last vertex in screen space. */
float end_ss[2];
ED_view3d_project_float_global(kcd->region, end, end_ss, V3D_PROJ_TEST_NOP);
knifetool_draw_angle(
kcd, kcd->curr.cage, kcd->prev.cage, end, kcd->curr.mval, kcd->prev.mval, end_ss, angle);
}
else if (kcd->mdata.is_stored && !kcd->prev.is_space()) {
float angle = angle_v3v3v3(kcd->curr.cage, kcd->prev.cage, kcd->mdata.cage);
knifetool_draw_angle(kcd,
kcd->curr.cage,
kcd->prev.cage,
kcd->mdata.cage,
kcd->curr.mval,
kcd->prev.mval,
kcd->mdata.mval,
angle);
}
}
static void knifetool_draw_dist_angle(const KnifeTool_OpData *kcd)
{
switch (kcd->dist_angle_mode) {
case KNF_MEASUREMENT_BOTH: {
knifetool_draw_visible_distances(kcd);
knifetool_draw_visible_angles(kcd);
break;
}
case KNF_MEASUREMENT_DISTANCE: {
knifetool_draw_visible_distances(kcd);
break;
}
case KNF_MEASUREMENT_ANGLE: {
knifetool_draw_visible_angles(kcd);
break;
}
}
}
/* Modal loop selection drawing callback. */
static void knifetool_draw(const bContext * /*C*/, ARegion * /*region*/, void *arg)
{
const KnifeTool_OpData *kcd = static_cast<const KnifeTool_OpData *>(arg);
GPU_depth_test(GPU_DEPTH_NONE);
GPU_matrix_push_projection();
GPU_polygon_offset(1.0f, 1.0f);
GPUVertFormat *format = immVertexFormat();
uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
if (kcd->mode == MODE_DRAGGING) {
immUniformColor3ubv(kcd->colors.line);
GPU_line_width(2.0);
immBegin(GPU_PRIM_LINES, 2);
immVertex3fv(pos, kcd->prev.cage);
immVertex3fv(pos, kcd->curr.cage);
immEnd();
}
if (kcd->prev.vert) {
immUniformColor3ubv(kcd->colors.point);
GPU_point_size(11 * UI_SCALE_FAC);
immBegin(GPU_PRIM_POINTS, 1);
immVertex3fv(pos, kcd->prev.cage);
immEnd();
}
if (kcd->prev.bmface || kcd->prev.edge) {
immUniformColor3ubv(kcd->colors.curpoint);
GPU_point_size(9 * UI_SCALE_FAC);
immBegin(GPU_PRIM_POINTS, 1);
immVertex3fv(pos, kcd->prev.cage);
immEnd();
}
if (kcd->curr.vert) {
immUniformColor3ubv(kcd->colors.point);
GPU_point_size(11 * UI_SCALE_FAC);
immBegin(GPU_PRIM_POINTS, 1);
immVertex3fv(pos, kcd->curr.cage);
immEnd();
}
else if (kcd->curr.edge) {
immUniformColor3ubv(kcd->colors.edge);
GPU_line_width(2.0);
immBegin(GPU_PRIM_LINES, 2);
immVertex3fv(pos, kcd->curr.edge->v1->cageco);
immVertex3fv(pos, kcd->curr.edge->v2->cageco);
immEnd();
}
if (kcd->curr.bmface || kcd->curr.edge) {
immUniformColor3ubv(kcd->colors.curpoint);
GPU_point_size(9 * UI_SCALE_FAC);
immBegin(GPU_PRIM_POINTS, 1);
immVertex3fv(pos, kcd->curr.cage);
immEnd();
}
if (kcd->depth_test) {
GPU_depth_test(GPU_DEPTH_LESS_EQUAL);
}
if (kcd->totkedge > 0) {
BLI_mempool_iter iter;
KnifeEdge *kfe;
immUniformColor3ubv(kcd->colors.line);
GPU_line_width(1.0);
gpu::Batch *batch = immBeginBatchAtMost(GPU_PRIM_LINES, BLI_mempool_len(kcd->kedges) * 2);
BLI_mempool_iternew(kcd->kedges, &iter);
for (kfe = static_cast<KnifeEdge *>(BLI_mempool_iterstep(&iter)); kfe;
kfe = static_cast<KnifeEdge *>(BLI_mempool_iterstep(&iter)))
{
if (!kfe->is_cut || kfe->is_invalid) {
continue;
}
immVertex3fv(pos, kfe->v1->cageco);
immVertex3fv(pos, kfe->v2->cageco);
}
immEnd();
GPU_batch_draw(batch);
GPU_batch_discard(batch);
}
if (kcd->totkvert > 0) {
BLI_mempool_iter iter;
KnifeVert *kfv;
immUniformColor3ubv(kcd->colors.point);
GPU_point_size(5.0 * UI_SCALE_FAC);
gpu::Batch *batch = immBeginBatchAtMost(GPU_PRIM_POINTS, BLI_mempool_len(kcd->kverts));
BLI_mempool_iternew(kcd->kverts, &iter);
for (kfv = static_cast<KnifeVert *>(BLI_mempool_iterstep(&iter)); kfv;