christoph/cpp-masssprings
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render vertices in addition to edges

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Christoph Urlacher
2026-02-17 00:54:43 +01:00
parent d6ce1a94f5
commit fba493ea93
6 changed files with 47 additions and 44 deletions
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30
src/main.cpp
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@ -23,9 +23,6 @@ auto main(int argc, char *argv[]) -> int {
InitWindow(WIDTH, HEIGHT, "MassSprings");
Edge3Set edges;
Edge2Set viewport;
viewport.reserve(edges.size());
MassSpringSystem mass_springs;
mass_springs.AddMass(1.0, Vector3(-0.5, 0.5, 0.0), true);
@ -37,6 +34,10 @@ auto main(int argc, char *argv[]) -> int {
DEFAULT_DAMPENING_CONSTANT, DEFAULT_REST_LENGTH);
Renderer renderer(WIDTH, HEIGHT);
Edge2Set edges;
edges.reserve(mass_springs.springs.size());
Vertex2Set vertices;
vertices.reserve(mass_springs.masses.size());
float frametime;
float abstime = 0.0;
@ -48,28 +49,15 @@ auto main(int argc, char *argv[]) -> int {
#ifdef VERLET_UPDATE
mass_springs.VerletUpdate(frametime * SIM_SPEED);
#else
mass_springs.IntegrateVelocities(frametime * SIM_SPEED);
mass_springs.IntegratePositions(frametime * SIM_SPEED);
mass_springs.EulerUpdate(frametime * SIM_SPEED);
#endif
// std::cout << "Calculating Spring Forces: A: (" << massA.force.x << ", "
// << massA.force.y << ", " << massA.force.z << ") B: ("
// << massB.force.x << ", " << massB.force.y << ", " <<
// massB.force.z
// << ")" << std::endl;
// std::cout << "Calculating Velocities: A: (" << massA.velocity.x << ", "
// << massA.velocity.y << ", " << massA.velocity.z << ") B: ("
// << massB.velocity.x << ", " << massB.velocity.y << ", "
// << massB.velocity.z << ")" << std::endl;
// std::cout << "Calculating Positions: A: (" << massA.position.x << ", "
// << massA.position.y << ", " << massA.position.z << ") B: ("
// << massB.position.x << ", " << massB.position.y << ", "
// << massB.position.z << ")" << std::endl;
renderer.Transform(edges, vertices, mass_springs, abstime * ROTATION_SPEED,
CAMERA_DISTANCE);
renderer.DrawMassSprings(edges, vertices);
renderer.Transform(viewport, mass_springs, 0.0, CAMERA_DISTANCE);
renderer.Draw(viewport);
abstime += frametime * SIM_SPEED;
abstime += frametime;
}
CloseWindow();