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-rw-r--r--scene/resources/curve.cpp97
-rw-r--r--scene/resources/curve.h2
2 files changed, 73 insertions, 26 deletions
diff --git a/scene/resources/curve.cpp b/scene/resources/curve.cpp
index 3b666640f8..a364a27e80 100644
--- a/scene/resources/curve.cpp
+++ b/scene/resources/curve.cpp
@@ -662,19 +662,27 @@ void Curve2D::_bake() const {
if (points.size() == 0) {
baked_point_cache.resize(0);
+ baked_dist_cache.resize(0);
return;
}
if (points.size() == 1) {
baked_point_cache.resize(1);
baked_point_cache.set(0, points[0].pos);
+
+ baked_dist_cache.resize(1);
+ baked_dist_cache.set(0, 0.0);
return;
}
Vector2 pos = points[0].pos;
+ float dist = 0.0;
+
List<Vector2> pointlist;
+ List<float> distlist;
pointlist.push_back(pos); //start always from origin
+ distlist.push_back(0.0);
for (int i = 0; i < points.size() - 1; i++) {
float step = 0.1; // at least 10 substeps ought to be enough?
@@ -712,7 +720,10 @@ void Curve2D::_bake() const {
pos = npp;
p = mid;
+ dist += d;
+
pointlist.push_back(pos);
+ distlist.push_back(dist);
} else {
p = np;
}
@@ -722,16 +733,20 @@ void Curve2D::_bake() const {
Vector2 lastpos = points[points.size() - 1].pos;
float rem = pos.distance_to(lastpos);
- baked_max_ofs = (pointlist.size() - 1) * bake_interval + rem;
+ dist += rem;
+ baked_max_ofs = dist;
pointlist.push_back(lastpos);
+ distlist.push_back(dist);
baked_point_cache.resize(pointlist.size());
+ baked_dist_cache.resize(distlist.size());
+
Vector2 *w = baked_point_cache.ptrw();
- int idx = 0;
+ float *wd = baked_dist_cache.ptrw();
- for (const Vector2 &E : pointlist) {
- w[idx] = E;
- idx++;
+ for (int i = 0; i < pointlist.size(); i++) {
+ w[i] = pointlist[i];
+ wd[i] = distlist[i];
}
}
@@ -766,19 +781,26 @@ Vector2 Curve2D::interpolate_baked(float p_offset, bool p_cubic) const {
return r[bpc - 1];
}
- int idx = Math::floor((double)p_offset / (double)bake_interval);
- float frac = Math::fmod(p_offset, (float)bake_interval);
-
- if (idx >= bpc - 1) {
- return r[bpc - 1];
- } else if (idx == bpc - 2) {
- if (frac > 0) {
- frac /= Math::fmod(baked_max_ofs, bake_interval);
+ int start = 0, end = bpc, idx = (end + start) / 2;
+ // binary search to find baked points
+ while (start < idx) {
+ float offset = baked_dist_cache[idx];
+ if (p_offset <= offset) {
+ end = idx;
+ } else {
+ start = idx;
}
- } else {
- frac /= bake_interval;
+ idx = (end + start) / 2;
}
+ float offset_begin = baked_dist_cache[idx];
+ float offset_end = baked_dist_cache[idx + 1];
+
+ float idx_interval = offset_end - offset_begin;
+ ERR_FAIL_COND_V_MSG(p_offset < offset_begin || p_offset > offset_end, Vector2(), "failed to find baked segment");
+
+ float frac = (p_offset - offset_begin) / idx_interval;
+
if (p_cubic) {
Vector2 pre = idx > 0 ? r[idx - 1] : r[idx];
Vector2 post = (idx < (bpc - 2)) ? r[idx + 2] : r[idx + 1];
@@ -1145,6 +1167,7 @@ void Curve3D::_bake() const {
baked_point_cache.resize(0);
baked_tilt_cache.resize(0);
baked_up_vector_cache.resize(0);
+ baked_dist_cache.resize(0);
return;
}
@@ -1153,6 +1176,8 @@ void Curve3D::_bake() const {
baked_point_cache.set(0, points[0].pos);
baked_tilt_cache.resize(1);
baked_tilt_cache.set(0, points[0].tilt);
+ baked_dist_cache.resize(1);
+ baked_dist_cache.set(0, 0.0);
if (up_vector_enabled) {
baked_up_vector_cache.resize(1);
@@ -1165,8 +1190,12 @@ void Curve3D::_bake() const {
}
Vector3 pos = points[0].pos;
+ float dist = 0.0;
List<Plane> pointlist;
+ List<float> distlist;
+
pointlist.push_back(Plane(pos, points[0].tilt));
+ distlist.push_back(0.0);
for (int i = 0; i < points.size() - 1; i++) {
float step = 0.1; // at least 10 substeps ought to be enough?
@@ -1207,7 +1236,10 @@ void Curve3D::_bake() const {
Plane post;
post.normal = pos;
post.d = Math::lerp(points[i].tilt, points[i + 1].tilt, mid);
+ dist += d;
+
pointlist.push_back(post);
+ distlist.push_back(dist);
} else {
p = np;
}
@@ -1218,8 +1250,10 @@ void Curve3D::_bake() const {
float lastilt = points[points.size() - 1].tilt;
float rem = pos.distance_to(lastpos);
- baked_max_ofs = (pointlist.size() - 1) * bake_interval + rem;
+ dist += rem;
+ baked_max_ofs = dist;
pointlist.push_back(Plane(lastpos, lastilt));
+ distlist.push_back(dist);
baked_point_cache.resize(pointlist.size());
Vector3 *w = baked_point_cache.ptrw();
@@ -1231,6 +1265,9 @@ void Curve3D::_bake() const {
baked_up_vector_cache.resize(up_vector_enabled ? pointlist.size() : 0);
Vector3 *up_write = baked_up_vector_cache.ptrw();
+ baked_dist_cache.resize(pointlist.size());
+ float *wd = baked_dist_cache.ptrw();
+
Vector3 sideways;
Vector3 up;
Vector3 forward;
@@ -1242,6 +1279,7 @@ void Curve3D::_bake() const {
for (const Plane &E : pointlist) {
w[idx] = E.normal;
wt[idx] = E.d;
+ wd[idx] = distlist[idx];
if (!up_vector_enabled) {
idx++;
@@ -1308,19 +1346,26 @@ Vector3 Curve3D::interpolate_baked(float p_offset, bool p_cubic) const {
return r[bpc - 1];
}
- int idx = Math::floor((double)p_offset / (double)bake_interval);
- float frac = Math::fmod(p_offset, bake_interval);
-
- if (idx >= bpc - 1) {
- return r[bpc - 1];
- } else if (idx == bpc - 2) {
- if (frac > 0) {
- frac /= Math::fmod(baked_max_ofs, bake_interval);
+ int start = 0, end = bpc, idx = (end + start) / 2;
+ // binary search to find baked points
+ while (start < idx) {
+ float offset = baked_dist_cache[idx];
+ if (p_offset <= offset) {
+ end = idx;
+ } else {
+ start = idx;
}
- } else {
- frac /= bake_interval;
+ idx = (end + start) / 2;
}
+ float offset_begin = baked_dist_cache[idx];
+ float offset_end = baked_dist_cache[idx + 1];
+
+ float idx_interval = offset_end - offset_begin;
+ ERR_FAIL_COND_V_MSG(p_offset < offset_begin || p_offset > offset_end, Vector3(), "failed to find baked segment");
+
+ float frac = (p_offset - offset_begin) / idx_interval;
+
if (p_cubic) {
Vector3 pre = idx > 0 ? r[idx - 1] : r[idx];
Vector3 post = (idx < (bpc - 2)) ? r[idx + 2] : r[idx + 1];
diff --git a/scene/resources/curve.h b/scene/resources/curve.h
index c25d307608..5808fd6508 100644
--- a/scene/resources/curve.h
+++ b/scene/resources/curve.h
@@ -161,6 +161,7 @@ class Curve2D : public Resource {
mutable bool baked_cache_dirty = false;
mutable PackedVector2Array baked_point_cache;
+ mutable PackedFloat32Array baked_dist_cache;
mutable float baked_max_ofs = 0.0;
void _bake() const;
@@ -224,6 +225,7 @@ class Curve3D : public Resource {
mutable PackedVector3Array baked_point_cache;
mutable Vector<real_t> baked_tilt_cache;
mutable PackedVector3Array baked_up_vector_cache;
+ mutable PackedFloat32Array baked_dist_cache;
mutable float baked_max_ofs = 0.0;
void _bake() const;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 23:44:37 +0000