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// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.1 (2013/07/14)
#include "Lights.h"
WM5_WINDOW_APPLICATION(Lights);
//----------------------------------------------------------------------------
Lights::Lights ()
:
WindowApplication3("SampleGraphics/Lights", 0, 0, 800, 600,
Float4(0.0f, 0.25f, 0.75f, 1.0f)),
mTextColor(1.0f, 1.0f, 1.0f, 1.0f)
{
}
//----------------------------------------------------------------------------
bool Lights::OnInitialize ()
{
if (!WindowApplication3::OnInitialize())
{
return false;
}
// Set up the camera.
mCamera->SetFrustum(60.0f, GetAspectRatio(), 0.1f, 100.0f);
APoint camPosition(16.0f, 0.0f, 8.0f);
AVector camDVector = APoint::ORIGIN - camPosition; // look at origin
camDVector.Normalize();
AVector camUVector(camDVector[2], 0.0f, -camDVector[0]);
AVector camRVector(0.0f, 1.0f, 0.0f);
mCamera->SetFrame(camPosition, camDVector, camUVector, camRVector);
CreateScene();
// Initial update of objects.
mScene->Update();
// Initial culling of scene.
mCuller.SetCamera(mCamera);
mCuller.ComputeVisibleSet(mScene);
InitializeCameraMotion(0.01f, 0.001f);
InitializeObjectMotion(mScene);
return true;
}
//----------------------------------------------------------------------------
void Lights::OnTerminate ()
{
mScene = 0;
mWireState = 0;
mPlane0 = 0;
mSphere0 = 0;
mPlane1 = 0;
mSphere1 = 0;
for (int i = 0; i < 3; ++i)
{
mLight[i][0] = 0;
mLight[i][1] = 0;
mInstance[i][0][0] = 0;
mInstance[i][0][1] = 0;
mInstance[i][1][0] = 0;
mInstance[i][1][1] = 0;
}
WindowApplication3::OnTerminate();
}
//----------------------------------------------------------------------------
void Lights::OnIdle ()
{
MeasureTime();
if (MoveCamera())
{
mCuller.ComputeVisibleSet(mScene);
}
if (MoveObject())
{
mScene->Update();
mCuller.ComputeVisibleSet(mScene);
}
if (mRenderer->PreDraw())
{
mRenderer->ClearBuffers();
mRenderer->Draw(mCuller.GetVisibleSet());
mRenderer->Draw(8, 16, mTextColor, mCurrentCaption);
DrawFrameRate(8, GetHeight()-8, mTextColor);
mRenderer->PostDraw();
mRenderer->DisplayColorBuffer();
}
UpdateFrameCount();
}
//----------------------------------------------------------------------------
bool Lights::OnKeyDown (unsigned char key, int x, int y)
{
if (WindowApplication3::OnKeyDown(key, x, y))
{
return true;
}
switch (key)
{
case 'w':
case 'W':
mWireState->Enabled = !mWireState->Enabled;
return true;
case 'd':
case 'D': // Switch to directional lights.
mPlane0->SetEffectInstance(mInstance[0][0][0]);
mSphere0->SetEffectInstance(mInstance[0][0][1]);
mPlane1->SetEffectInstance(mInstance[0][1][0]);
mSphere1->SetEffectInstance(mInstance[0][1][1]);
mCurrentCaption = mCaption[0];
mActiveType = 0;
return true;
case 'p':
case 'P': // Switch to point lights.
mPlane0->SetEffectInstance(mInstance[1][0][0]);
mSphere0->SetEffectInstance(mInstance[1][0][1]);
mPlane1->SetEffectInstance(mInstance[1][1][0]);
mSphere1->SetEffectInstance(mInstance[1][1][1]);
mCurrentCaption = mCaption[1];
mActiveType = 1;
return true;
case 's':
case 'S': // Switch to spot lights.
mPlane0->SetEffectInstance(mInstance[2][0][0]);
mSphere0->SetEffectInstance(mInstance[2][0][1]);
mPlane1->SetEffectInstance(mInstance[2][1][0]);
mSphere1->SetEffectInstance(mInstance[2][1][1]);
mCurrentCaption = mCaption[2];
mActiveType = 2;
return true;
case 'i':
mLight[mActiveType][0]->Intensity -= 0.125f;
mLight[mActiveType][1]->Intensity -= 0.125f;
if (mLight[mActiveType][0]->Intensity < 0.0f)
{
mLight[mActiveType][0]->Intensity = 0.0f;
mLight[mActiveType][1]->Intensity = 0.0f;
}
return true;
case 'I':
mLight[mActiveType][0]->Intensity += 0.125f;
mLight[mActiveType][1]->Intensity += 0.125f;
return true;
case 'a':
mLight[mActiveType][0]->Angle -= 0.1f;
mLight[mActiveType][1]->Angle -= 0.1f;
if (mLight[mActiveType][0]->Angle < 0.0f)
{
mLight[mActiveType][0]->Angle = 0.0f;
mLight[mActiveType][1]->Angle = 0.0f;
}
mLight[mActiveType][0]->SetAngle(mLight[mActiveType][0]->Angle);
mLight[mActiveType][1]->SetAngle(mLight[mActiveType][1]->Angle);
return true;
case 'A':
mLight[mActiveType][0]->Angle += 0.1f;
mLight[mActiveType][1]->Angle += 0.1f;
if (mLight[mActiveType][0]->Angle > Mathf::HALF_PI)
{
mLight[mActiveType][0]->Angle = Mathf::HALF_PI;
mLight[mActiveType][1]->Angle = Mathf::HALF_PI;
}
mLight[mActiveType][0]->SetAngle(mLight[mActiveType][0]->Angle);
mLight[mActiveType][1]->SetAngle(mLight[mActiveType][1]->Angle);
return true;
case 'e':
mLight[mActiveType][0]->Exponent *= 0.5f;
mLight[mActiveType][1]->Exponent *= 0.5f;
return true;
case 'E':
mLight[mActiveType][0]->Exponent *= 2.0f;
mLight[mActiveType][1]->Exponent *= 2.0f;
return true;
}
return false;
}
//----------------------------------------------------------------------------
void Lights::CreateScene ()
{
// Create the root of the scene.
mScene = new0 Node();
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
// Create the lights.
mLight[0][0] = new0 Light(Light::LT_DIRECTIONAL);
mLight[0][0]->Ambient = Float4(0.75f, 0.75f, 0.75f, 1.0f);
mLight[0][0]->Diffuse = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[0][0]->Specular = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[0][0]->SetDirection(AVector(-1.0f, -1.0f, -1.0f));
mLight[0][1] = new0 Light(Light::LT_DIRECTIONAL);
mLight[0][1]->Ambient = Float4(0.75f, 0.75f, 0.75f, 1.0f);
mLight[0][1]->Diffuse = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[0][1]->Specular = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[0][1]->SetDirection(AVector(-1.0f, -1.0f, -1.0f));
mLight[1][0] = new0 Light(Light::LT_POINT);
mLight[1][0]->Ambient = Float4(0.1f, 0.1f, 0.1f, 1.0f);
mLight[1][0]->Diffuse = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[1][0]->Specular = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[1][0]->Position = APoint(4.0f, 4.0f - 8.0f, 8.0f);
mLight[1][1] = new0 Light(Light::LT_POINT);
mLight[1][1]->Ambient = Float4(0.1f, 0.1f, 0.1f, 1.0f);
mLight[1][1]->Diffuse = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[1][1]->Specular = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[1][1]->Position = APoint(4.0f, 4.0f + 8.0f, 8.0f);
mLight[2][0] = new0 Light(Light::LT_SPOT);
mLight[2][0]->Ambient = Float4(0.1f, 0.1f, 0.1f, 1.0f);
mLight[2][0]->Diffuse = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[2][0]->Specular = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[2][0]->Position = APoint(4.0f, 4.0f - 8.0f, 8.0f);
mLight[2][0]->SetDirection(AVector(-1.0f, -1.0f, -1.0f));
mLight[2][0]->Exponent = 1.0f;
mLight[2][0]->SetAngle(0.125f*Mathf::PI);
mLight[2][1] = new0 Light(Light::LT_SPOT);
mLight[2][1]->Ambient = Float4(0.1f, 0.1f, 0.1f, 1.0f);
mLight[2][1]->Diffuse = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[2][1]->Specular = Float4(1.0f, 1.0f, 1.0f, 1.0f);
mLight[2][1]->Position = APoint(4.0f, 4.0f + 8.0f, 8.0f);
mLight[2][1]->SetDirection(AVector(-1.0f, -1.0f, -1.0f));
mLight[2][1]->Exponent = 1.0f;
mLight[2][1]->SetAngle(0.125f*Mathf::PI);
// The material shared by the planes (polished copper).
Material* copper = new0 Material();
copper->Emissive = Float4(0.0f, 0.0f, 0.0f, 1.0f);
copper->Ambient = Float4(0.2295f, 0.08825f, 0.0275f, 1.0f);
copper->Diffuse = Float4(0.5508f, 0.2118f, 0.066f, 1.0f);
copper->Specular = Float4(0.580594f, 0.223257f, 0.0695701f, 51.2f);
// The material shared by the spheres (polished gold).
Material* gold = new0 Material();
gold->Emissive = Float4(0.0f, 0.0f, 0.0f, 1.0f);
gold->Ambient = Float4(0.24725f, 0.2245f, 0.0645f, 1.0f);
gold->Diffuse = Float4(0.34615f, 0.3143f, 0.0903f, 1.0f);
gold->Specular = Float4(0.797357f, 0.723991f, 0.208006f, 83.2f);
// Create the effects.
LightDirPerVerEffect* effectDV = new0 LightDirPerVerEffect();
LightDirPerPixEffect* effectDP = new0 LightDirPerPixEffect();
LightPntPerVerEffect* effectPV = new0 LightPntPerVerEffect();
LightPntPerPixEffect* effectPP = new0 LightPntPerPixEffect();
LightSptPerVerEffect* effectSV = new0 LightSptPerVerEffect();
LightSptPerPixEffect* effectSP = new0 LightSptPerPixEffect();
mInstance[0][0][0] = effectDV->CreateInstance(mLight[0][0], copper);
mInstance[0][1][0] = effectDP->CreateInstance(mLight[0][1], copper);
mInstance[1][0][0] = effectPV->CreateInstance(mLight[1][0], copper);
mInstance[1][1][0] = effectPP->CreateInstance(mLight[1][1], copper);
mInstance[2][0][0] = effectSV->CreateInstance(mLight[2][0], copper);
mInstance[2][1][0] = effectSP->CreateInstance(mLight[2][1], copper);
mInstance[0][0][1] = effectDV->CreateInstance(mLight[0][0], gold);
mInstance[0][1][1] = effectDP->CreateInstance(mLight[0][1], gold);
mInstance[1][0][1] = effectPV->CreateInstance(mLight[1][0], gold);
mInstance[1][1][1] = effectPP->CreateInstance(mLight[1][1], gold);
mInstance[2][0][1] = effectSV->CreateInstance(mLight[2][0], gold);
mInstance[2][1][1] = effectSP->CreateInstance(mLight[2][1], gold);
// Create the objects. The normals are duplicated to texture
// coordinates to avoid the AMD lighting problems due to use of
// pre-OpenGL2.x extensions.
VertexFormat* vformat = VertexFormat::Create(3,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_NORMAL, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT3, 1);
StandardMesh sm(vformat);
VertexBufferAccessor vba;
mPlane0 = sm.Rectangle(128, 128, 8.0f, 8.0f);
vba.ApplyTo(mPlane0);
for (int i = 0; i < vba.GetNumVertices(); ++i)
{
vba.TCoord<Float3>(1, i) = vba.Normal<Float3>(i);
}
mPlane0->LocalTransform.SetTranslate(APoint(0.0f, -8.0f, 0.0f));
mPlane0->SetEffectInstance(mInstance[0][0][0]);
mScene->AttachChild(mPlane0);
mSphere0 = sm.Sphere(64, 64, 2.0f);
vba.ApplyTo(mSphere0);
for (int i = 0; i < vba.GetNumVertices(); ++i)
{
vba.TCoord<Float3>(1, i) = vba.Normal<Float3>(i);
}
mSphere0->LocalTransform.SetTranslate(APoint(0.0f, -8.0f, 2.0f));
mSphere0->SetEffectInstance(mInstance[0][0][1]);
mScene->AttachChild(mSphere0);
mPlane1 = sm.Rectangle(128, 128, 8.0f, 8.0f);
vba.ApplyTo(mPlane1);
for (int i = 0; i < vba.GetNumVertices(); ++i)
{
vba.TCoord<Float3>(1, i) = vba.Normal<Float3>(i);
}
mPlane1->LocalTransform.SetTranslate(APoint(0.0f, +8.0f, 0.0f));
mPlane1->SetEffectInstance(mInstance[0][1][0]);
mScene->AttachChild(mPlane1);
mSphere1 = sm.Sphere(64, 64, 2.0f);
vba.ApplyTo(mSphere1);
for (int i = 0; i < vba.GetNumVertices(); ++i)
{
vba.TCoord<Float3>(1, i) = vba.Normal<Float3>(i);
}
mSphere1->LocalTransform.SetTranslate(APoint(0.0f, +8.0f, 2.0f));
mSphere1->SetEffectInstance(mInstance[0][1][1]);
mScene->AttachChild(mSphere1);
mCaption[0] = "Directional Light (left per vertex, right per pixel)";
mCaption[1] = "Point Light (left per vertex, right per pixel)";
mCaption[2] = "Spot Light (left per vertex, right per pixel)";
mCurrentCaption = mCaption[0];
mActiveType = 0;
}
//----------------------------------------------------------------------------
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