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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: 5.0.0 (2010/01/01)
#include "CollisionsBoundTree.h"
WM5_WINDOW_APPLICATION(CollisionsBoundTree);
//----------------------------------------------------------------------------
CollisionsBoundTree::CollisionsBoundTree ()
:
WindowApplication3("SamplePhysics/CollisionsBoundTree", 0, 0, 640, 480,
Float4(1.0f, 1.0f, 1.0f, 1.0f)),
mBlueUV(0.25f, 0.25f),
mRedUV(0.25f, 0.75f),
mCyanUV(0.75f, 0.25f),
mYellowUV(0.75f, 0.75f),
mTextColor(0.0f, 0.0f, 0.0f, 1.0f)
{
mGroup = 0;
}
//----------------------------------------------------------------------------
bool CollisionsBoundTree::OnInitialize ()
{
if (!WindowApplication3::OnInitialize())
{
return false;
}
// Set up the camera.
mCamera->SetFrustum(60.0f, GetAspectRatio(), 1.0f, 1000.0f);
APoint camPosition(4.0f, 0.0f, 0.0f);
AVector camDVector(-1.0f, 0.0f, 0.0f);
AVector camUVector(0.0f, 0.0f, 1.0f);
AVector camRVector = camDVector.Cross(camUVector);
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, 0.01f);
InitializeObjectMotion(mScene);
return true;
}
//----------------------------------------------------------------------------
void CollisionsBoundTree::OnTerminate ()
{
delete0(mGroup);
mScene = 0;
mCylinder0 = 0;
mCylinder1 = 0;
mWireState = 0;
WindowApplication3::OnTerminate();
}
//----------------------------------------------------------------------------
void CollisionsBoundTree::OnIdle ()
{
MeasureTime();
if (MoveCamera())
{
mCuller.ComputeVisibleSet(mScene);
}
if (MoveObject())
{
mScene->Update();
mCuller.ComputeVisibleSet(mScene);
}
if (mRenderer->PreDraw())
{
mRenderer->ClearBuffers();
mRenderer->Draw(mCuller.GetVisibleSet());
DrawFrameRate(8, GetHeight()-8, mTextColor);
mRenderer->PostDraw();
mRenderer->DisplayColorBuffer();
}
UpdateFrameCount();
}
//----------------------------------------------------------------------------
bool CollisionsBoundTree::OnKeyDown (unsigned char key, int x, int y)
{
// Move the tall/thin cylinder and activate the collision system.
if (Transform(key))
{
return true;
}
switch (key)
{
case 'w':
case 'W':
mWireState->Enabled = !mWireState->Enabled;
return true;
}
return WindowApplication3::OnKeyDown(key, x, y);
}
//----------------------------------------------------------------------------
void CollisionsBoundTree::CreateScene ()
{
// The root of the scene will have two cylinders as children.
mScene = new0 Node();
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
mCullState = new0 CullState();
mCullState->Enabled = false;
mRenderer->SetOverrideCullState(mCullState);
// Create a texture image to be used by both cylinders.
Texture2D* texture = new0 Texture2D(Texture::TF_A8R8G8B8, 2, 2, 1);
unsigned int* data = (unsigned int*)texture->GetData(0);
data[0] = Color::MakeR8G8B8(0, 0, 255); // blue
data[1] = Color::MakeR8G8B8(0, 255, 255); // cyan
data[2] = Color::MakeR8G8B8(255, 0, 0); // red
data[3] = Color::MakeR8G8B8(255, 255, 0); // yellow
Texture2DEffect* effect = new0 Texture2DEffect(Shader::SF_LINEAR);
// Create two cylinders, one short and thick, one tall and thin.
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
StandardMesh sm(vformat);
VertexBufferAccessor vba;
int i;
mCylinder0 = sm.Cylinder(8, 16, 1.0f, 2.0f, false);
vba.ApplyTo(mCylinder0);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
vba.TCoord<Float2>(0, i) = mBlueUV;
}
mCylinder0->SetEffectInstance(effect->CreateInstance(texture));
mScene->AttachChild(mCylinder0);
mCylinder1 = sm.Cylinder(16,8,0.25,4.0,false);
vba.ApplyTo(mCylinder1);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
vba.TCoord<Float2>(0, i) = mRedUV;
}
mCylinder1->SetEffectInstance(effect->CreateInstance(texture));
mScene->AttachChild(mCylinder1);
mScene->Update();
// Set up the collision system. Record0 handles the collision response.
// Record1 is not given a callback so that 'double processing' of the
// events does not occur.
CTree* tree0 = new0 CTree(mCylinder0, 1, false);
CRecord* record0 = new0 CRecord(tree0, 0, Response, this);
CTree* tree1 = new0 CTree(mCylinder1, 1, false);
CRecord* record1 = new0 CRecord(tree1, 0, 0, 0);
mGroup = new0 CGroup();
mGroup->Add(record0);
mGroup->Add(record1);
ResetColors();
mGroup->TestIntersection();
}
//----------------------------------------------------------------------------
bool CollisionsBoundTree::Transform (unsigned char key)
{
// Move the tall/thin cylinder. After each motion, reset the texture
// coordinates to the "no intersection" state, then let the collision
// system test for intersection. Any intersecting triangles have their
// texture coordinates changed to the "intersection" state.
float trnSpeed = 0.1f;
float rotSpeed = 0.1f;
HMatrix rot, incr;
APoint trn;
switch (key)
{
case 'x':
trn = mCylinder1->LocalTransform.GetTranslate();
trn[0] -= trnSpeed;
mCylinder1->LocalTransform.SetTranslate(trn);
break;
case 'X':
trn = mCylinder1->LocalTransform.GetTranslate();
trn[0] += trnSpeed;
mCylinder1->LocalTransform.SetTranslate(trn);
break;
case 'y':
trn = mCylinder1->LocalTransform.GetTranslate();
trn[1] -= trnSpeed;
mCylinder1->LocalTransform.SetTranslate(trn);
break;
case 'Y':
trn = mCylinder1->LocalTransform.GetTranslate();
trn[1] += trnSpeed;
mCylinder1->LocalTransform.SetTranslate(trn);
break;
case 'z':
trn = mCylinder1->LocalTransform.GetTranslate();
trn[2] -= trnSpeed;
mCylinder1->LocalTransform.SetTranslate(trn);
break;
case 'Z':
trn = mCylinder1->LocalTransform.GetTranslate();
trn[2] += trnSpeed;
mCylinder1->LocalTransform.SetTranslate(trn);
break;
case 'r':
rot = mCylinder1->LocalTransform.GetRotate();
incr.MakeRotation(AVector::UNIT_X, rotSpeed);
mCylinder1->LocalTransform.SetRotate(incr*rot);
break;
case 'R':
rot = mCylinder1->LocalTransform.GetRotate();
incr.MakeRotation(AVector::UNIT_X, -rotSpeed);
mCylinder1->LocalTransform.SetRotate(incr*rot);
break;
case 'a':
rot = mCylinder1->LocalTransform.GetRotate();
incr.MakeRotation(AVector::UNIT_Y, rotSpeed);
mCylinder1->LocalTransform.SetRotate(incr*rot);
break;
case 'A':
rot = mCylinder1->LocalTransform.GetRotate();
incr.MakeRotation(AVector::UNIT_Y, -rotSpeed);
mCylinder1->LocalTransform.SetRotate(incr*rot);
break;
case 'p':
rot = mCylinder1->LocalTransform.GetRotate();
incr.MakeRotation(AVector::UNIT_Z, rotSpeed);
mCylinder1->LocalTransform.SetRotate(incr*rot);
break;
case 'P':
rot = mCylinder1->LocalTransform.GetRotate();
incr.MakeRotation(AVector::UNIT_Z, -rotSpeed);
mCylinder1->LocalTransform.SetRotate(incr*rot);
break;
default:
return false;
}
// Activate the collision system.
mCylinder1->Update();
ResetColors();
mGroup->TestIntersection();
return true;
}
//----------------------------------------------------------------------------
void CollisionsBoundTree::ResetColors ()
{
VertexBufferAccessor vba(mCylinder0);
int i;
for (i = 0; i < vba.GetNumVertices(); ++i)
{
vba.TCoord<Float2>(0, i) = mBlueUV;
}
mRenderer->Update(mCylinder0->GetVertexBuffer());
vba.ApplyTo(mCylinder1);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
vba.TCoord<Float2>(0, i) = mRedUV;
}
mRenderer->Update(mCylinder1->GetVertexBuffer());
}
//----------------------------------------------------------------------------
void CollisionsBoundTree::Response (CRecord& record0, int t0,
CRecord& record1, int t1, Intersector<float,Vector3f>*)
{
CollisionsBoundTree* app = (CollisionsBoundTree*)TheApplication;
// Mesh0 triangles that are intersecting change from blue to cyan.
TriMesh* mesh = record0.GetMesh();
VertexBufferAccessor vba(mesh);
const int* indices = (int*)mesh->GetIndexBuffer()->GetData();
int i0 = indices[3*t0];
int i1 = indices[3*t0 + 1];
int i2 = indices[3*t0 + 2];
vba.TCoord<Float2>(0, i0) = app->mCyanUV;
vba.TCoord<Float2>(0, i1) = app->mCyanUV;
vba.TCoord<Float2>(0, i2) = app->mCyanUV;
app->mRenderer->Update(mesh->GetVertexBuffer());
// Mesh1 triangles that are intersecting change from red to yellow.
mesh = record1.GetMesh();
vba.ApplyTo(mesh);
indices = (int*)mesh->GetIndexBuffer()->GetData();
i0 = indices[3*t1];
i1 = indices[3*t1 + 1];
i2 = indices[3*t1 + 2];
vba.TCoord<Float2>(0 ,i0) = app->mYellowUV;
vba.TCoord<Float2>(0, i1) = app->mYellowUV;
vba.TCoord<Float2>(0, i2) = app->mYellowUV;
app->mRenderer->Update(mesh->GetVertexBuffer());
// NOTE: See the comments in Wm5CollisionGroup.h about information that
// is available from the Intersector<float,Vector3f> object.
}
//----------------------------------------------------------------------------
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