3D GUI

[Josh]

This code shows how to set up a GUI with 3D graphics. This requires an update I will upload today:

#include "UltraEngine.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);

    //Create a world
    auto world = CreateWorld();

    //Create a framebuffer
    auto framebuffer = CreateFramebuffer(window);

    //Create a camera
    auto camera = CreateCamera(world);
    camera->SetClearColor(0.125);
    camera->SetPosition(0, 0.1, -1);

    auto specmap = LoadTexture("Materials/Environment/Storm/specular.dds");
    auto diffmap = LoadTexture("Materials/Environment/Storm/diffuse.dds");

    world->SetEnvironmentMap(specmap, ENVIRONMENTMAP_BACKGROUND);
    world->SetEnvironmentMap(specmap, ENVIRONMENTMAP_SPECULAR);
    world->SetEnvironmentMap(diffmap, ENVIRONMENTMAP_DIFFUSE);

    auto mtl = CreateMaterial();
    mtl->SetRoughness(0.25);
    mtl->SetMetalness(0.5);

    auto ball = CreateSphere(world,0.5,32);
    ball->SetMaterial(mtl);

    camera->Point(ball);

    auto cam2d = CreateCamera(world);
    cam2d->SetProjectionMode(PROJECTION_ORTHOGRAPHIC);
    cam2d->SetRange(-1, 1);
    cam2d->SetRenderLayers(RENDERLAYER_1);
    cam2d->SetClearMode(CLEAR_DEPTH);
    cam2d->SetPosition(float(framebuffer->size.x)*0.5f, float(framebuffer->size.y)*0.5f);

    const int SIDEPANELWIDTH = 200;

    auto ui = CreateInterface(world, framebuffer->size);
    ui->background->SetShape(0, 0, SIDEPANELWIDTH, ui->background->size.y);
    ui->background->SetLayout(1, 0, 1, 1);
    ui->SetRenderLayers(RENDERLAYER_1);
    
    int x = 10, y = 10;
    CreateLabel("Rougness:", x, y, ui->background->size.x - 2 * x, 30, ui->background);
    y += 40;
    auto roughnessslider = CreateSlider(x, y, ui->background->size.x - 2 * x, 30, ui->background, SLIDER_HORIZONTAL | SLIDER_TRACKBAR);
    roughnessslider->SetLayout(1, 1, 1, 0);
    roughnessslider->SetRange(0, 10);
    roughnessslider->SetValue(0);
    y += 40;
    CreateLabel("Metallic:", x, y, ui->background->size.x - 2 * x, 30, ui->background);
    y += 40;
    auto metallicslider = CreateSlider(x, y, ui->background->size.x - 2 * x, 30, ui->background, SLIDER_HORIZONTAL | SLIDER_TRACKBAR);
    metallicslider->SetRange(0, 10);
    metallicslider->SetValue(0);
    metallicslider->SetLayout(1, 1, 1, 0);
    y += 40;

    ui->SetScale(displays[0]->scale);

    //Main loop
    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        while (PeekEvent())
        {
            const auto& e = WaitEvent();
            switch (e.id)
            {

            //Pass these events to the GUI:
            case EVENT_MOUSEWHEEL:
            case EVENT_MOUSEDOWN:
            case EVENT_MOUSEUP:
            case EVENT_MOUSEMOVE:
            case EVENT_KEYDOWN:
            case EVENT_KEYUP:
            case EVENT_KEYREPEAT:
            case EVENT_KEYCHAR:
                ui->ProcessEvent(e);
                break;

            //Response to GUI events:
            case EVENT_WIDGETACTION:
                if (e.source == roughnessslider)
                {
                    mtl->SetRoughness(float(e.data) * 0.1f);
                }
                else if (e.source == metallicslider)
                {
                    mtl->SetMetalness(float(e.data) * 0.1f);
                }
                break;
            }
        }

        //camera->UpdateControls(window);
        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

Here is the result:

[Josh]

Okay, the update is available now and this example works.

I noticed the project was not showing as requiring an update, even though new shaders were downloaded. There may be an issue with the time stamps on zip-extracted files, so you may need to uninstall and reinstall the SDK before the project will show that it is outdated.

[reepblue]

Thanks. Going to have a ton of fun this weekend!