Welcome to mirror list, hosted at ThFree Co, Russian Federation.

git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
path: root/source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c
diff options
context:
space:
mode:
Diffstat (limited to 'source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c')
-rw-r--r--source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c173
1 files changed, 165 insertions, 8 deletions
diff --git a/source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c b/source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c
index 8935bdd1870..f3110cf87b6 100644
--- a/source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c
+++ b/source/blender/gpencil_modifiers/intern/lineart/lineart_chain.c
@@ -126,7 +126,7 @@ static LineartEdgeChainItem *lineart_chain_append_point(LineartRenderBuffer *rb,
eci = lineart_mem_acquire(rb->chain_data_pool, sizeof(LineartEdgeChainItem));
- copy_v2_v2(eci->pos, fbcoord);
+ copy_v4_v4(eci->pos, fbcoord);
copy_v3_v3(eci->gpos, gpos);
eci->index = index;
copy_v3_v3(eci->normal, normal);
@@ -156,7 +156,7 @@ static LineartEdgeChainItem *lineart_chain_prepend_point(LineartRenderBuffer *rb
eci = lineart_mem_acquire(rb->chain_data_pool, sizeof(LineartEdgeChainItem));
- copy_v2_v2(eci->pos, fbcoord);
+ copy_v4_v4(eci->pos, fbcoord);
copy_v3_v3(eci->gpos, gpos);
eci->index = index;
copy_v3_v3(eci->normal, normal);
@@ -177,15 +177,15 @@ void MOD_lineart_chain_feature_lines(LineartRenderBuffer *rb)
int last_occlusion;
unsigned char last_transparency;
/* Used when converting from double. */
- float use_fbcoord[2];
+ float use_fbcoord[4];
float use_gpos[3];
#define VERT_COORD_TO_FLOAT(a) \
- copy_v2fl_v2db(use_fbcoord, (a)->fbcoord); \
+ copy_v4fl_v4db(use_fbcoord, (a)->fbcoord); \
copy_v3fl_v3db(use_gpos, (a)->gloc);
#define POS_TO_FLOAT(lpos, gpos) \
- copy_v2fl_v2db(use_fbcoord, lpos); \
+ copy_v3fl_v3db(use_fbcoord, lpos); \
copy_v3fl_v3db(use_gpos, gpos);
LRT_ITER_ALL_LINES_BEGIN
@@ -262,6 +262,7 @@ void MOD_lineart_chain_feature_lines(LineartRenderBuffer *rb)
double global_at = lfb[3] * es->at / (es->at * lfb[3] + (1 - es->at) * rfb[3]);
interp_v3_v3v3_db(lpos, new_e->v1->fbcoord, new_e->v2->fbcoord, es->at);
interp_v3_v3v3_db(gpos, new_e->v1->gloc, new_e->v2->gloc, global_at);
+ use_fbcoord[3] = interpf(new_e->v2->fbcoord[3], new_e->v1->fbcoord[3], global_at);
POS_TO_FLOAT(lpos, gpos)
lineart_chain_prepend_point(rb,
ec,
@@ -287,6 +288,7 @@ void MOD_lineart_chain_feature_lines(LineartRenderBuffer *rb)
double global_at = lfb[3] * es->at / (es->at * lfb[3] + (1 - es->at) * rfb[3]);
interp_v3_v3v3_db(lpos, new_e->v1->fbcoord, new_e->v2->fbcoord, es->at);
interp_v3_v3v3_db(gpos, new_e->v1->gloc, new_e->v2->gloc, global_at);
+ use_fbcoord[3] = interpf(new_e->v2->fbcoord[3], new_e->v1->fbcoord[3], global_at);
POS_TO_FLOAT(lpos, gpos)
lineart_chain_prepend_point(rb,
ec,
@@ -340,6 +342,7 @@ void MOD_lineart_chain_feature_lines(LineartRenderBuffer *rb)
double global_at = lfb[3] * es->at / (es->at * lfb[3] + (1 - es->at) * rfb[3]);
interp_v3_v3v3_db(lpos, e->v1->fbcoord, e->v2->fbcoord, es->at);
interp_v3_v3v3_db(gpos, e->v1->gloc, e->v2->gloc, global_at);
+ use_fbcoord[3] = interpf(e->v2->fbcoord[3], e->v1->fbcoord[3], global_at);
POS_TO_FLOAT(lpos, gpos)
lineart_chain_append_point(rb,
ec,
@@ -403,6 +406,7 @@ void MOD_lineart_chain_feature_lines(LineartRenderBuffer *rb)
double global_at = lfb[3] * es->at / (es->at * lfb[3] + (1 - es->at) * rfb[3]);
interp_v3_v3v3_db(lpos, new_e->v1->fbcoord, new_e->v2->fbcoord, es->at);
interp_v3_v3v3_db(gpos, new_e->v1->gloc, new_e->v2->gloc, global_at);
+ use_fbcoord[3] = interpf(new_e->v2->fbcoord[3], new_e->v1->fbcoord[3], global_at);
last_occlusion = es->prev ? es->prev->occlusion : last_occlusion;
last_transparency = es->prev ? es->prev->material_mask_bits : last_transparency;
POS_TO_FLOAT(lpos, gpos)
@@ -430,6 +434,7 @@ void MOD_lineart_chain_feature_lines(LineartRenderBuffer *rb)
double global_at = lfb[3] * es->at / (es->at * lfb[3] + (1 - es->at) * rfb[3]);
interp_v3_v3v3_db(lpos, new_e->v1->fbcoord, new_e->v2->fbcoord, es->at);
interp_v3_v3v3_db(gpos, new_e->v1->gloc, new_e->v2->gloc, global_at);
+ use_fbcoord[3] = interpf(new_e->v2->fbcoord[3], new_e->v1->fbcoord[3], global_at);
POS_TO_FLOAT(lpos, gpos)
lineart_chain_append_point(rb,
ec,
@@ -926,9 +931,9 @@ void MOD_lineart_chain_clear_picked_flag(LineartCache *lc)
void MOD_lineart_smooth_chains(LineartRenderBuffer *rb, float tolerance)
{
- LISTBASE_FOREACH (LineartEdgeChain *, rlc, &rb->chains) {
+ LISTBASE_FOREACH (LineartEdgeChain *, ec, &rb->chains) {
LineartEdgeChainItem *next_eci;
- for (LineartEdgeChainItem *eci = rlc->chain.first; eci; eci = next_eci) {
+ for (LineartEdgeChainItem *eci = ec->chain.first; eci; eci = next_eci) {
next_eci = eci->next;
LineartEdgeChainItem *eci2, *eci3, *eci4;
@@ -944,7 +949,7 @@ void MOD_lineart_smooth_chains(LineartRenderBuffer *rb, float tolerance)
if (dist_to_line_segment_v2(eci3->pos, eci->pos, eci2->pos) < tolerance) {
/* And if p4 is on the extension of p1-p2 , we remove p3. */
if ((eci4 = eci3->next) && (dist_to_line_v2(eci4->pos, eci->pos, eci2->pos) < tolerance)) {
- BLI_remlink(&rlc->chain, eci3);
+ BLI_remlink(&ec->chain, eci3);
next_eci = eci;
}
}
@@ -952,6 +957,116 @@ void MOD_lineart_smooth_chains(LineartRenderBuffer *rb, float tolerance)
}
}
+static LineartEdgeChainItem *lineart_chain_create_crossing_point(LineartRenderBuffer *rb,
+ LineartEdgeChainItem *eci_inside,
+ LineartEdgeChainItem *eci_outside)
+{
+ float isec[2];
+ float LU[2] = {-1.0f, 1.0f}, LB[2] = {-1.0f, -1.0f}, RU[2] = {1.0f, 1.0f}, RB[2] = {1.0f, -1.0f};
+ bool found = false;
+ LineartEdgeChainItem *eci2 = eci_outside, *eci1 = eci_inside;
+ if (eci2->pos[0] < -1.0f) {
+ found = (isect_seg_seg_v2_point(eci1->pos, eci2->pos, LU, LB, isec) > 0);
+ }
+ if (!found && eci2->pos[0] > 1.0f) {
+ found = (isect_seg_seg_v2_point(eci1->pos, eci2->pos, RU, RB, isec) > 0);
+ }
+ if (!found && eci2->pos[1] < -1.0f) {
+ found = (isect_seg_seg_v2_point(eci1->pos, eci2->pos, LB, RB, isec) > 0);
+ }
+ if (!found && eci2->pos[1] > 1.0f) {
+ found = (isect_seg_seg_v2_point(eci1->pos, eci2->pos, LU, RU, isec) > 0);
+ }
+
+ if (UNLIKELY(!found)) {
+ return NULL;
+ }
+
+ float ratio = (fabs(eci2->pos[0] - eci1->pos[0]) > fabs(eci2->pos[1] - eci1->pos[1])) ?
+ ratiof(eci1->pos[0], eci2->pos[0], isec[0]) :
+ ratiof(eci1->pos[1], eci2->pos[1], isec[1]);
+ float gratio = eci1->pos[3] * ratio / (ratio * eci1->pos[3] + (1 - ratio) * eci2->pos[3]);
+
+ LineartEdgeChainItem *eci = lineart_mem_acquire(rb->chain_data_pool,
+ sizeof(LineartEdgeChainItem));
+ memcpy(eci, eci1, sizeof(LineartEdgeChainItem));
+ interp_v3_v3v3(eci->gpos, eci1->gpos, eci2->gpos, gratio);
+ interp_v3_v3v3(eci->pos, eci1->pos, eci2->pos, ratio);
+ eci->pos[3] = interpf(eci2->pos[3], eci1->pos[3], gratio);
+ eci->next = eci->prev = NULL;
+ return eci;
+}
+
+#define LRT_ECI_INSIDE(eci) \
+ ((eci)->pos[0] >= -1.0f && (eci)->pos[0] <= 1.0f && (eci)->pos[1] >= -1.0f && \
+ (eci)->pos[1] <= 1.0f)
+
+void MOD_lineart_chain_clip_at_border(LineartRenderBuffer *rb)
+{
+ LineartEdgeChain *ec;
+ LineartEdgeChainItem *eci, *next_eci, *prev_eci, *new_eci;
+ bool is_inside, new_inside;
+ ListBase swap = {0};
+ swap.first = rb->chains.first;
+ swap.last = rb->chains.last;
+
+ rb->chains.last = rb->chains.first = NULL;
+ while ((ec = BLI_pophead(&swap)) != NULL) {
+ bool ec_added = false;
+ LineartEdgeChainItem *first_eci = (LineartEdgeChainItem *)ec->chain.first;
+ is_inside = LRT_ECI_INSIDE(first_eci) ? true : false;
+ if (!is_inside) {
+ ec->picked = true;
+ }
+ for (eci = first_eci->next; eci; eci = next_eci) {
+ next_eci = eci->next;
+ prev_eci = eci->prev;
+
+ /* We only need to do something if the edge crossed from outside to the inside or from inside
+ * to the outside. */
+ if ((new_inside = LRT_ECI_INSIDE(eci)) != is_inside) {
+ if (new_inside == false) {
+ /* Stroke goes out. */
+ new_eci = lineart_chain_create_crossing_point(rb, prev_eci, eci);
+
+ LineartEdgeChain *new_ec = lineart_mem_acquire(rb->chain_data_pool,
+ sizeof(LineartEdgeChain));
+ memcpy(new_ec, ec, sizeof(LineartEdgeChain));
+ new_ec->chain.first = next_eci;
+ eci->prev = NULL;
+ prev_eci->next = NULL;
+ ec->chain.last = prev_eci;
+ BLI_addtail(&ec->chain, new_eci);
+ BLI_addtail(&rb->chains, ec);
+ ec_added = true;
+ ec = new_ec;
+
+ next_eci = eci->next;
+ is_inside = new_inside;
+ continue;
+ }
+ /* Stroke comes in. */
+ new_eci = lineart_chain_create_crossing_point(rb, eci, prev_eci);
+
+ ec->chain.first = eci;
+ eci->prev = NULL;
+
+ BLI_addhead(&ec->chain, new_eci);
+
+ ec_added = false;
+
+ next_eci = eci->next;
+ is_inside = new_inside;
+ continue;
+ }
+ }
+
+ if ((!ec_added) && is_inside) {
+ BLI_addtail(&rb->chains, ec);
+ }
+ }
+}
+
/**
* This should always be the last stage!, see the end of
* #MOD_lineart_chain_split_for_fixed_occlusion().
@@ -1008,3 +1123,45 @@ void MOD_lineart_chain_split_angle(LineartRenderBuffer *rb, float angle_threshol
}
}
}
+
+void MOD_lineart_chain_offset_towards_camera(LineartRenderBuffer *rb,
+ float dist,
+ bool use_custom_camera)
+{
+ float dir[3];
+ float cam[3];
+ float view[3];
+ float view_clamp[3];
+ copy_v3fl_v3db(cam, rb->camera_pos);
+ copy_v3fl_v3db(view, rb->view_vector);
+
+ if (use_custom_camera) {
+ copy_v3fl_v3db(cam, rb->camera_pos);
+ }
+ else {
+ copy_v3fl_v3db(cam, rb->active_camera_pos);
+ }
+
+ if (rb->cam_is_persp) {
+ LISTBASE_FOREACH (LineartEdgeChain *, ec, &rb->chains) {
+ LISTBASE_FOREACH (LineartEdgeChainItem *, eci, &ec->chain) {
+ sub_v3_v3v3(dir, cam, eci->gpos);
+ float orig_len = len_v3(dir);
+ normalize_v3(dir);
+ mul_v3_fl(dir, MIN2(dist, orig_len - rb->near_clip));
+ add_v3_v3(eci->gpos, dir);
+ }
+ }
+ }
+ else {
+ LISTBASE_FOREACH (LineartEdgeChain *, ec, &rb->chains) {
+ LISTBASE_FOREACH (LineartEdgeChainItem *, eci, &ec->chain) {
+ sub_v3_v3v3(dir, cam, eci->gpos);
+ float len_lim = dot_v3v3(view, dir) - rb->near_clip;
+ normalize_v3_v3(view_clamp, view);
+ mul_v3_fl(view_clamp, MIN2(dist, len_lim));
+ add_v3_v3(eci->gpos, view_clamp);
+ }
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-16 02:43:39 +0300