This function performs a pick operation on all entities in a world that intersect the specified line.

Syntax

• bool Pick(const Vec3& p0, const Vec3& p1, PickInfo& pickinfo, float radius=0.0, bool closest=false, int collisiontype=0)

Parameters

• p0: the origin of the ray.
• p1: the terminal end of the ray.
• pickinfo: a pick info object to contain pick information.
• radius: the radius of the ray. If the radius is greater than 0.0, a slower swept sphere collision will be performed.
• closest: if set to true, the closest intersection will be found, otherwise the operation will return as soon as a single intersection is found.
• collisiontype: if specified, the entity collision type will be tested against this, and only colliding entities will be tested.

Returns

Returns true if anything is hit, otherwise false is returned.

Example

#include "Leadwerks.h"

using namespace Leadwerks;

SpotLight* light = NULL;
int main(int argc, const char *argv[])
{
    Leadwerks::Window* window = Leadwerks::Window::Create();
    Context* context = Context::Create(window);
    World* world = World::Create();
    Camera* camera = Camera::Create();
    camera->Move(0, 0, -8);
    Light* light = DirectionalLight::Create();
    light->SetRotation(35, 35, 0);

    //Create a model
    Model* model1 = Model::Box();
    model1->SetPosition(2, 0, 0);

    Model* model2 = Model::Box();
    model2->SetPosition(-2, 0, 0);
    model2->SetPickMode(0);// Disable picking on the first hit entity

                           //Create a sphere to indicate where the pick hits
    Model* picksphere = Model::Sphere();
    picksphere->SetColor(1.0, 0.0, 0.0);
    picksphere->SetPickMode(0);

    float pickradius = 0.5;
    picksphere->SetScale(pickradius*2.0);

    world->Update();
    PickInfo pickinfo;
    if (world->Pick(-10, 0.75, 0, 10, 0.75, 0, pickinfo, pickradius, true))
    {
        picksphere->SetPosition(pickinfo.position);

        //Make sure the pick mode equals Entity::PolygonPick
        Debug::Assert(pickinfo.entity->GetPickMode() == Entity::PolygonPick);
    }
    else
    {
        picksphere->Release();
    }

    while (true)
    {
        if (window->Closed() || window->KeyDown(Key::Escape)) return false;

        Leadwerks::Time::Update();
        world->Update();
        world->Render();
        context->Sync();

    }
    return 0;
}