Camera::Render

This method will trigger a refresh of a camera that is set to only render intermittently with the Camera::SetRealtime command.

Syntax

• void Render()

Remarks

Because rendering in Ultra Engine is asynchronous, the camera is not immediately rendered when this method is called. A call to this method guarantees the camera will render at least one more time before it stops refreshing, with whatever settings it has at the time of the next call to World::Render.

Example

#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 light
    auto light = CreateBoxLight(world);
    light->SetRange(-10, 10);
    light->SetRotation(15, 15, 0);
    light->SetColor(2);

    //Create camera
    auto camera = CreateCamera(world);
    camera->SetClearColor(0.125);
    camera->SetPosition(0, 0, -3);
    camera->SetFov(70);

    //Create scenery
    auto box = CreateBox(world);

    auto cone = CreateCone(world);
    cone->SetPosition(1.25, 0, 0);
    cone->SetColor(0, 0, 1);

    auto sphere = CreateSphere(world);
    sphere->SetPosition(-1.25, 0, 0);
    sphere->SetColor(1, 0, 0);

    //Create camera and texture buffer
    auto texbuffer = CreateTextureBuffer(256, 256);
    auto cam2 = CreateCamera(world);
    cam2->SetClearColor(1, 1, 1);
    cam2->SetRenderTarget(texbuffer);
    cam2->SetRealtime(false);

    //Create material
    auto mtl = CreateMaterial();
    auto tex = texbuffer->GetColorAttachment();
    mtl->SetTexture(tex);
    box->SetMaterial(mtl);
    cone->SetMaterial(mtl);
    sphere->SetMaterial(mtl);

    //Main loop
    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        //Orient the texturebuffer camera
        cam2->SetPosition(0, 0, 0);
        cam2->Turn(0, 1, 0);
        cam2->Move(0, 0, -3);

        //Press the space key to redraw the texture buffer camera
        if (window->KeyHit(KEY_SPACE)) cam2->Render();

        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}