From 89a3f9c4020bea4b4f85f32bdc6a2af13ccd5da0 Mon Sep 17 00:00:00 2001 From: ccolin Date: Tue, 22 Dec 2020 16:34:47 +0100 Subject: [PATCH] delete unused file --- src/boid.cc | 108 ---------------------------------------------------- 1 file changed, 108 deletions(-) delete mode 100644 src/boid.cc diff --git a/src/boid.cc b/src/boid.cc deleted file mode 100644 index 9eeea41..0000000 --- a/src/boid.cc +++ /dev/null @@ -1,108 +0,0 @@ -#include "main_window.hh" - -#include -#include - - -struct Fish { - QVector3D pos; - QVector3D vel; - float size; - float dist = 10; - float sqdist; - - OpenGLMesh mesh; - - Fish(QVector3D pos, OpenGLMesh mesh) - :pos(pos), - sqdist(dist * dist), - mesh(mesh) {} - - void step() { - pos += vel; - mesh.mat.setToIdentity(); - QMatrix4x4 rot; - rot.lookAt(pos, vel, {0, 1, 0}); - mesh.mat.translate(pos); - // mesh.mat = rot * mesh.mat; - } - - bool in_neighborhood(const QVector3D &p) const { - return (p - pos).lengthSquared() < sqdist; - } -}; - - -struct Banc { - QVector fishes; - - Banc() {} - - Banc(size_t nfishes) { - OpenGLMesh fish_mesh = OpenGLMesh({ - 0, .1, 0, - -.0866, -.05, 0, - .0866, -.05, 0, - }); - QRandomGenerator *rng = QRandomGenerator::global(); - for (size_t i = 0; i < nfishes; i++) { - Fish fish({ - (float) (rng->generateDouble() * 3 - 1.5), - (float) (rng->generateDouble() * 3 - 1.5), - (float) (rng->generateDouble() * 3 - 1.5) - }, fish_mesh); - fishes.append(fish); - } - } - - void step() { - QVector neighbors; - for (Fish &fish : fishes) { - QVector3D neighbors_cog; - QVector3D neighbors_vel; - size_t nneighbors = 0; - for (Fish &fish_b : fishes) { - if (fish_b.in_neighborhood(fish.pos)) { - nneighbors++; - neighbors_cog += fish_b.pos; - neighbors_vel += fish_b.vel; - } - } - neighbors_cog /= nneighbors; - neighbors_vel /= nneighbors; - QVector3D v1 = -(fish.pos - neighbors_cog); - QVector3D v2 = fish.vel - neighbors_vel; - QVector3D v3 = neighbors_cog - fish.pos; - QVector3D v = 1.5 * v1 + v2 + v3; - float L = .001; - fish.vel = (1-L) * fish.vel + L * v; - fish.step(); - } - } -}; - - -Banc banc; - -void MainWindow::init() { - banc = Banc(10); - for (Fish &fish : banc.fishes) { - glw.meshes.append(&fish.mesh); - } -} - - -void MainWindow::step() { - banc.step(); - OpenGLWidget::instance->update(); -} - - -void OpenGLWidget::paintGL() { - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - for (const Fish &fish : banc.fishes) { - glUniformMatrix4fv(model_attr, 1, GL_FALSE, fish.mesh.mat.data()); - glBindVertexArray(fish.mesh.vao); - glDrawArrays(GL_TRIANGLES, 0, fish.mesh.nverts); - } -}