christoph/cpp-masssprings
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implement option to lock camera to graph's center of mass

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This commit is contained in:
Christoph Urlacher
2026-02-27 14:06:30 +01:00
parent e8bd90911d
commit b01cfdecfe
10 changed files with 85 additions and 38 deletions
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21
src/camera.cpp
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@ -41,12 +41,21 @@ auto OrbitCamera3D::Pan(Vector2 last_mouse, Vector2 mouse) -> void {
target = Vector3Add(target, offset);
}
auto OrbitCamera3D::Update(const Vector3 &current_target, bool lock) -> void {
auto OrbitCamera3D::Update(const Vector3 &current_target,
const Vector3 &mass_center, bool lock,
bool mass_center_lock) -> void {
if (lock) {
target = Vector3MoveTowards(
target, current_target,
CAMERA_SMOOTH_SPEED * GetFrameTime() *
Vector3Length(Vector3Subtract(target, current_target)));
if (mass_center_lock) {
target = Vector3MoveTowards(
target, mass_center,
CAMERA_SMOOTH_SPEED * GetFrameTime() *
Vector3Length(Vector3Subtract(target, mass_center)));
} else {
target = Vector3MoveTowards(
target, current_target,
CAMERA_SMOOTH_SPEED * GetFrameTime() *
Vector3Length(Vector3Subtract(target, current_target)));
}
}
distance = Clamp(distance, MIN_CAMERA_DISTANCE, MAX_CAMERA_DISTANCE);
@ -60,7 +69,7 @@ auto OrbitCamera3D::Update(const Vector3 &current_target, bool lock) -> void {
float y = sin(angle_y) * actual_distance;
float z = cos(angle_y) * cos(angle_x) * actual_distance;
fov = Clamp(fov, 25.0, 155.0);
fov = Clamp(fov, MIN_FOV, MAX_FOV);
camera.position = Vector3Add(target, Vector3(x, y, z));
camera.target = target;