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highlight colliding drones

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This commit is contained in:
ccolin 2021-01-03 17:10:26 +01:00
parent 14b5993f0f
commit ec4017bb0f
4 changed files with 18 additions and 1 deletions
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8
shaders/main.frag
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@ -3,6 +3,7 @@ varying vec2 uv;
varying vec3 frag_pos;
uniform sampler2D tex;
uniform bool highlight;
void main() {
vec3 light_col = vec3(1, .964, .783);
@ -12,5 +13,10 @@ void main() {
float diff = max(dot(normalize(norm), light_dir), 0.0);
vec3 diffuse = diff * light_col;
gl_FragColor = texture2D(tex, uv) * vec4(ambient + diffuse, 1);
vec4 col = texture2D(tex, uv) * vec4(ambient + diffuse, 1);
if (highlight) {
col = mix(col, vec4(1, 0, 0, 1), .5);
}
gl_FragColor = col;
}

9
src/drone_controller.cc
View File

@ -45,14 +45,21 @@ DroneController::DroneController(const QJsonObject &json)
void DroneController::draw(QOpenGLExtraFunctions *f) const {
const QVector<QPair<int, int>> &col = collisions[frame];
for (const Drone &d : drones) {
QMatrix4x4 mat;
mat.translate(d.getPos());
for (const QPair<int, int> &p : col) {
if (d.getId() == p.first || d.getId() == p.second) {
OpenGLWidget::instance->getMainProgram()->setUniformValue("highlight", true);
}
}
d.getMesh()->draw(f, mat);
if (draw_spheres) {
mat.scale(sphere_radius);
sphere->draw(f, mat);
}
OpenGLWidget::instance->getMainProgram()->setUniformValue("highlight", false);
}
}
@ -116,6 +123,7 @@ void DroneController::seek(int frame) {
void DroneController::computeCollisions(double sphere_radius) {
collisions.clear();
double sqDist = sphere_radius * sphere_radius * 4;
for (int i = 0; i < duration; i++) {
for (Drone &a : drones) {
@ -124,6 +132,7 @@ void DroneController::computeCollisions(double sphere_radius) {
b.setTo(i);
if (&a == &b) continue;
if (collides(a, b, sqDist)) {
collisions[i].append(QPair<int, int>(a.getId(), b.getId()));
emit collision(a.getId(), b.getId(), i);
}
}

1
src/drone_controller.hh
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@ -22,6 +22,7 @@ class DroneController : public QObject, public Painter {
bool draw_spheres = false;
double sphere_radius = 0;
QTimer sphere_timer;
QMap<int, QVector<QPair<int, int>>> collisions;
static OpenGLMesh *sphere;
static const unsigned char sphere_neutral[];

1
src/opengl_widget.cc
View File

@ -186,6 +186,7 @@ void OpenGLWidget::paintGL() {
main_program.bind();
main_program.setUniformValue("proj", proj);
main_program.setUniformValue("view", view);
main_program.setUniformValue("highlight", false);
glActiveTexture(GL_TEXTURE0);
ground->draw(this, QMatrix4x4());
if (painter) painter->draw(this);