summaryrefslogtreecommitdiff
path: root/scene/3d
diff options
context:
space:
mode:
Diffstat (limited to 'scene/3d')
-rw-r--r--scene/3d/path_3d.cpp177
-rw-r--r--scene/3d/path_3d.h7
2 files changed, 69 insertions, 115 deletions
diff --git a/scene/3d/path_3d.cpp b/scene/3d/path_3d.cpp
index ab4cba86fb..02ab297d8e 100644
--- a/scene/3d/path_3d.cpp
+++ b/scene/3d/path_3d.cpp
@@ -182,125 +182,31 @@ void PathFollow3D::_update_transform(bool p_update_xyz_rot) {
if (bl == 0.0) {
return;
}
- real_t bi = c->get_bake_interval();
- real_t o_next = progress + bi;
- real_t o_prev = progress - bi;
-
- if (loop) {
- o_next = Math::fposmod(o_next, bl);
- o_prev = Math::fposmod(o_prev, bl);
- } else if (rotation_mode == ROTATION_ORIENTED) {
- if (o_next >= bl) {
- o_next = bl;
- }
- if (o_prev <= 0) {
- o_prev = 0;
- }
- }
-
- Vector3 pos = c->sample_baked(progress, cubic);
- Transform3D t = get_transform();
- // Vector3 pos_offset = Vector3(h_offset, v_offset, 0); not used in all cases
- // will be replaced by "Vector3(h_offset, v_offset, 0)" where it was formerly used
-
- if (rotation_mode == ROTATION_ORIENTED) {
- Vector3 forward = c->sample_baked(o_next, cubic) - pos;
-
- // Try with the previous position
- if (forward.length_squared() < CMP_EPSILON2) {
- forward = pos - c->sample_baked(o_prev, cubic);
- }
-
- if (forward.length_squared() < CMP_EPSILON2) {
- forward = Vector3(0, 0, 1);
- } else {
- forward.normalize();
- }
-
- Vector3 up = c->sample_baked_up_vector(progress, true);
- if (o_next < progress) {
- Vector3 up1 = c->sample_baked_up_vector(o_next, true);
- Vector3 axis = up.cross(up1);
-
- if (axis.length_squared() < CMP_EPSILON2) {
- axis = forward;
- } else {
- axis.normalize();
- }
-
- up.rotate(axis, up.angle_to(up1) * 0.5f);
- }
-
- Vector3 scale = t.basis.get_scale();
- Vector3 sideways = up.cross(forward).normalized();
- up = forward.cross(sideways).normalized();
-
- t.basis.set_columns(sideways, up, forward);
- t.basis.scale_local(scale);
-
- t.origin = pos + sideways * h_offset + up * v_offset;
- } else if (rotation_mode != ROTATION_NONE) {
- // perform parallel transport
- //
- // see C. Dougan, The Parallel Transport Frame, Game Programming Gems 2 for example
- // for a discussion about why not Frenet frame.
+ Transform3D t;
+ if (rotation_mode == ROTATION_NONE) {
+ Vector3 pos = c->sample_baked(progress, cubic);
t.origin = pos;
- if (p_update_xyz_rot && prev_offset != progress) { // Only update rotation if some parameter has changed - i.e. not on addition to scene tree.
- real_t sample_distance = bi * 0.01;
- Vector3 t_prev_pos_a = c->sample_baked(prev_offset - sample_distance, cubic);
- Vector3 t_prev_pos_b = c->sample_baked(prev_offset + sample_distance, cubic);
- Vector3 t_cur_pos_a = c->sample_baked(progress - sample_distance, cubic);
- Vector3 t_cur_pos_b = c->sample_baked(progress + sample_distance, cubic);
- Vector3 t_prev = (t_prev_pos_a - t_prev_pos_b).normalized();
- Vector3 t_cur = (t_cur_pos_a - t_cur_pos_b).normalized();
-
- Vector3 axis = t_prev.cross(t_cur);
- real_t dot = t_prev.dot(t_cur);
- real_t angle = Math::acos(CLAMP(dot, -1, 1));
-
- if (likely(!Math::is_zero_approx(angle))) {
- if (rotation_mode == ROTATION_Y) {
- // assuming we're referring to global Y-axis. is this correct?
- axis.x = 0;
- axis.z = 0;
- } else if (rotation_mode == ROTATION_XY) {
- axis.z = 0;
- } else if (rotation_mode == ROTATION_XYZ) {
- // all components are allowed
- }
+ } else {
+ t = c->sample_baked_with_rotation(progress, cubic, false);
+ Vector3 forward = t.basis.get_column(2); // Retain tangent for applying tilt
+ t = PathFollow3D::correct_posture(t, rotation_mode);
- if (likely(!Math::is_zero_approx(axis.length()))) {
- t.rotate_basis(axis.normalized(), angle);
- }
- }
+ // Apply tilt *after* correct_posture
+ if (tilt_enabled) {
+ const real_t tilt = c->sample_baked_tilt(progress);
- // do the additional tilting
- real_t tilt_angle = c->sample_baked_tilt(progress);
- Vector3 tilt_axis = t_cur; // not sure what tilt is supposed to do, is this correct??
-
- if (likely(!Math::is_zero_approx(Math::abs(tilt_angle)))) {
- if (rotation_mode == ROTATION_Y) {
- tilt_axis.x = 0;
- tilt_axis.z = 0;
- } else if (rotation_mode == ROTATION_XY) {
- tilt_axis.z = 0;
- } else if (rotation_mode == ROTATION_XYZ) {
- // all components are allowed
- }
-
- if (likely(!Math::is_zero_approx(tilt_axis.length()))) {
- t.rotate_basis(tilt_axis.normalized(), tilt_angle);
- }
- }
+ const Basis twist(forward, tilt);
+ t.basis = twist * t.basis;
}
-
- t.translate_local(Vector3(h_offset, v_offset, 0));
- } else {
- t.origin = pos + Vector3(h_offset, v_offset, 0);
}
+ Vector3 scale = get_transform().basis.get_scale();
+
+ t.translate_local(Vector3(h_offset, v_offset, 0));
+ t.basis.scale_local(scale);
+
set_transform(t);
}
@@ -358,6 +264,38 @@ PackedStringArray PathFollow3D::get_configuration_warnings() const {
return warnings;
}
+Transform3D PathFollow3D::correct_posture(Transform3D p_transform, PathFollow3D::RotationMode p_rotation_mode) {
+ Transform3D t = p_transform;
+
+ // Modify frame according to rotation mode.
+ if (p_rotation_mode == PathFollow3D::ROTATION_NONE) {
+ // Clear rotation.
+ t.basis = Basis();
+ } else if (p_rotation_mode == PathFollow3D::ROTATION_ORIENTED) {
+ // Y-axis always straight up.
+ Vector3 up(0.0, 1.0, 0.0);
+ Vector3 forward = t.basis.get_column(2);
+
+ t.basis = Basis::looking_at(-forward, up);
+ } else {
+ // Lock some euler axes.
+ Vector3 euler = t.basis.get_euler_normalized(EulerOrder::YXZ);
+ if (p_rotation_mode == PathFollow3D::ROTATION_Y) {
+ // Only Y-axis allowed.
+ euler[0] = 0;
+ euler[2] = 0;
+ } else if (p_rotation_mode == PathFollow3D::ROTATION_XY) {
+ // XY allowed.
+ euler[2] = 0;
+ }
+
+ Basis locked = Basis::from_euler(euler, EulerOrder::YXZ);
+ t.basis = locked;
+ }
+
+ return t;
+}
+
void PathFollow3D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_progress", "progress"), &PathFollow3D::set_progress);
ClassDB::bind_method(D_METHOD("get_progress"), &PathFollow3D::get_progress);
@@ -380,6 +318,11 @@ void PathFollow3D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_loop", "loop"), &PathFollow3D::set_loop);
ClassDB::bind_method(D_METHOD("has_loop"), &PathFollow3D::has_loop);
+ ClassDB::bind_method(D_METHOD("set_tilt_enabled", "enabled"), &PathFollow3D::set_tilt_enabled);
+ ClassDB::bind_method(D_METHOD("is_tilt_enabled"), &PathFollow3D::is_tilt_enabled);
+
+ ClassDB::bind_static_method("PathFollow3D", D_METHOD("correct_posture", "transform", "rotation_mode"), &PathFollow3D::correct_posture);
+
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "progress", PROPERTY_HINT_RANGE, "0,10000,0.01,or_less,or_greater,suffix:m"), "set_progress", "get_progress");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "progress_ratio", PROPERTY_HINT_RANGE, "0,1,0.0001,or_less,or_greater", PROPERTY_USAGE_EDITOR), "set_progress_ratio", "get_progress_ratio");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "h_offset", PROPERTY_HINT_NONE, "suffix:m"), "set_h_offset", "get_h_offset");
@@ -387,6 +330,7 @@ void PathFollow3D::_bind_methods() {
ADD_PROPERTY(PropertyInfo(Variant::INT, "rotation_mode", PROPERTY_HINT_ENUM, "None,Y,XY,XYZ,Oriented"), "set_rotation_mode", "get_rotation_mode");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "cubic_interp"), "set_cubic_interpolation", "get_cubic_interpolation");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "loop"), "set_loop", "has_loop");
+ ADD_PROPERTY(PropertyInfo(Variant::BOOL, "tilt_enabled"), "set_tilt_enabled", "is_tilt_enabled");
BIND_ENUM_CONSTANT(ROTATION_NONE);
BIND_ENUM_CONSTANT(ROTATION_Y);
@@ -397,7 +341,6 @@ void PathFollow3D::_bind_methods() {
void PathFollow3D::set_progress(real_t p_progress) {
ERR_FAIL_COND(!isfinite(p_progress));
- prev_offset = progress;
progress = p_progress;
if (path) {
@@ -409,8 +352,6 @@ void PathFollow3D::set_progress(real_t p_progress) {
if (!Math::is_zero_approx(p_progress) && Math::is_zero_approx(progress)) {
progress = path_length;
}
- } else {
- progress = CLAMP(progress, 0, path_length);
}
}
@@ -476,3 +417,11 @@ void PathFollow3D::set_loop(bool p_loop) {
bool PathFollow3D::has_loop() const {
return loop;
}
+
+void PathFollow3D::set_tilt_enabled(bool p_enable) {
+ tilt_enabled = p_enable;
+}
+
+bool PathFollow3D::is_tilt_enabled() const {
+ return tilt_enabled;
+}
diff --git a/scene/3d/path_3d.h b/scene/3d/path_3d.h
index b161b12185..9d5f694247 100644
--- a/scene/3d/path_3d.h
+++ b/scene/3d/path_3d.h
@@ -72,14 +72,16 @@ public:
ROTATION_ORIENTED
};
+ static Transform3D correct_posture(Transform3D p_transform, PathFollow3D::RotationMode p_rotation_mode);
+
private:
Path3D *path = nullptr;
- real_t prev_offset = 0.0; // Offset during the last _update_transform.
real_t progress = 0.0;
real_t h_offset = 0.0;
real_t v_offset = 0.0;
bool cubic = true;
bool loop = true;
+ bool tilt_enabled = true;
RotationMode rotation_mode = ROTATION_XYZ;
void _update_transform(bool p_update_xyz_rot = true);
@@ -106,6 +108,9 @@ public:
void set_loop(bool p_loop);
bool has_loop() const;
+ void set_tilt_enabled(bool p_enable);
+ bool is_tilt_enabled() const;
+
void set_rotation_mode(RotationMode p_rotation_mode);
RotationMode get_rotation_mode() const;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 05:18:51 +0000