void Camera::ShowGUIProperties(Editor* editor)
{
SceneNode::ShowGUIProperties(editor);
std::string header = "Camera:" + GetName();
if (ImGui::TreeNode(header.c_str()))
{
auto zNear = GetZNear();
ImGui::DragFloat("##zNear", &zNear, 1.f, 0.1f, 10000.0f, "zNear %.1f");
SetNearClip(zNear);
auto zFar = GetZFar();
ImGui::DragFloat("##zFar", &zFar, 1.f, 0.1f, 10000.0f, "zFar %.1f");
SetFarClip(zFar);
auto isOrtho = IsOrtho();
ImGui::Checkbox("Ortho", &isOrtho);
isOrtho ? EnableOrtho() : DisableOrtho();
if (!isOrtho)
{
auto fov = GetFOVRadians();
ImGui::SliderAngle("FOV", &fov, 0.f, CAMERA_MAX_FOV_DEGREES);
SetFOVRadians(fov);
}
else
{
auto orthoScale = GetOrthoScale();
ImGui::DragFloat("##orthoScale", &orthoScale, 1.f, 0.f, MAX_WORLD_SIZE, "Size %.1f");
SetOrthoScale(orthoScale);
}
ImGui::TreePop();
}
}
/** Support objects created, start application specific content. */
void UApp::Start() {
// the mouse must be in cursor mode before setting the UI.
auto input_ = GetSubsystem< Urho3D::Input >();
input_->SetMouseVisible(true);
// resources origin.
cache_ = GetSubsystem< Urho3D::ResourceCache >();
// use the default style from Urho3D.
GetSubsystem< Urho3D::UI >()->GetRoot()->SetDefaultStyle(
cache_->GetResource< Urho3D::XMLFile >("UI/DefaultStyle.xml"));
// grab mouse
input_->SetMouseGrabbed(true);
// setup scene to render.
scene_ = new Urho3D::Scene(context_);
scene_->CreateComponent< Urho3D::Octree >();
// Create the light
{
auto lightNode = scene_->CreateChild("Light");
lightNode->SetPosition(Urho3D::Vector3(6, 6, -20));
auto light = lightNode->CreateComponent< Urho3D::Light >();
light->SetLightType(Urho3D::LIGHT_POINT);
light->SetRange(1000);
}
// setup camera
{
auto cameraNode_ = scene_->CreateChild("Camera");
cameraNode_->SetPosition(Urho3D::Vector3(6, 6, -20));
auto camera_ = cameraNode_->CreateComponent< Urho3D::Camera >();
camera_->SetFarClip(2000);
auto renderer = GetSubsystem< Urho3D::Renderer >();
Urho3D::SharedPtr< Urho3D::Viewport > viewport(new Urho3D::Viewport(context_, scene_, camera_));
renderer->SetViewport(0, viewport);
}
// start the game
game.start();
// subscribe to events
SubscribeToEvent(Urho3D::E_UPDATE,URHO3D_HANDLER(UApp,HandleUpdate));
SubscribeToEvent(Urho3D::E_KEYDOWN,URHO3D_HANDLER(UApp,HandleKeyDown));
SubscribeToEvent(Urho3D::E_KEYUP,URHO3D_HANDLER(UApp,HandleKeyUp));
}
/*
===============
R_SetupProjection
===============
*/
void R_SetupProjection(void)
{
float xmin, xmax, ymin, ymax;
float width, height, depth;
float zNear, zFar;
// dynamically compute far clip plane distance
SetFarClip();
//
// set up projection matrix
//
zNear = r_znear->value;
zFar = tr.viewParms.zFar;
ymax = zNear * tan(tr.refdef.fov_y * M_PI / 360.0f);
ymin = -ymax;
xmax = zNear * tan(tr.refdef.fov_x * M_PI / 360.0f);
xmin = -xmax;
width = xmax - xmin;
height = ymax - ymin;
depth = zFar - zNear;
tr.viewParms.projectionMatrix[0] = 2 * zNear / width;
tr.viewParms.projectionMatrix[4] = 0;
tr.viewParms.projectionMatrix[8] = (xmax + xmin)/ width; // normally 0
tr.viewParms.projectionMatrix[12] = 0;
tr.viewParms.projectionMatrix[1] = 0;
tr.viewParms.projectionMatrix[5] = 2 * zNear / height;
tr.viewParms.projectionMatrix[9] = (ymax + ymin)/ height; // normally 0
tr.viewParms.projectionMatrix[13] = 0;
tr.viewParms.projectionMatrix[2] = 0;
tr.viewParms.projectionMatrix[6] = 0;
tr.viewParms.projectionMatrix[10] = -(zFar + zNear)/ depth;
tr.viewParms.projectionMatrix[14] = -2 * zFar * zNear / depth;
tr.viewParms.projectionMatrix[3] = 0;
tr.viewParms.projectionMatrix[7] = 0;
tr.viewParms.projectionMatrix[11] = -1;
tr.viewParms.projectionMatrix[15] = 0;
}
inline void
MLRClippingState::Clip4dVertex(Stuff::Vector4D *v4d)
{
#if USE_ASSEMBLER_CODE
int _ret = 0;
_asm {
mov edi, v4d
xor ecx,ecx
xor edx, edx
test dword ptr [edi], 080000000h
setne cl
sub edx, ecx
and edx, 8 // RightClipFlag
xor ebx, ebx
test dword ptr [edi+4], 080000000h
setne cl
sub ebx, ecx
and ebx, 2 // BottomClipFlag
or edx, ebx
xor ebx, ebx
test dword ptr [edi+8], 080000000h
setne cl
sub ebx, ecx
and ebx, 16 // NearClipFlag
or edx, ebx
fld dword ptr [edi+0Ch]
xor ebx, ebx
fcom dword ptr [edi]
fnstsw ax
test ah, 1
setne cl
sub ebx, ecx
and ebx, 4 // LeftClipFlag
or edx, ebx
xor ebx, ebx
fcom dword ptr [edi+4]
fnstsw ax
test ah, 1
setne cl
sub ebx, ecx
and ebx, 1 // TopClipFlag
or edx, ebx
xor ebx, ebx
fcomp dword ptr [edi+8]
fnstsw ax
test ah, 41h
setne cl
sub ebx, ecx
and ebx, 32 // FarClipFlag
or edx, ebx
mov _ret, edx
}
clippingState = _ret;
#else
clippingState = 0;
if(v4d->w <= v4d->z)
{
SetFarClip();
}
if(v4d->z < 0.0f)
{
SetNearClip();
}
if(v4d->x < 0.0f)
{
SetRightClip();
}
if(v4d->w < v4d->x)
{
SetLeftClip();
}
if(v4d->y < 0.0f)
{
SetBottomClip();
}
if(v4d->w < v4d->y)
{
SetTopClip();
}
#endif
}
