// Update the spotlight based on camera position change
void UpdateSpotlight()
{
Point3 pos = MyCamera->GetPosition();
Spotlight->SetPosition(HPoint3(pos.x, pos.y, pos.z, 1.0f));
Vector3 dir = MyCamera->GetViewPlaneNormal() * -1.0f;
Spotlight->SetSpotlightDirection(dir);
}
/**
* Construct the scene
*/
void ConstructScene()
{
// -------------------- Geometry -------------------- //
movingSquare = new UnitSquareFlatSurface(200,32.2f*.814f,true,Vector2(-.01f,0),.03f);
SceneNode* house = ConstructHouse(70,90);
// Construct a unit cylinder surface
WasherSurface* cylinder = new WasherSurface(.9f, 1.0f, 18);
//Wheel
WasherSurface* washer = new WasherSurface(10,20,14);
std::vector<LightNode*> lights;
lights.push_back(new LightNode(GL_LIGHT3));
lights.push_back(new LightNode(GL_LIGHT4));
wheel = new WheelNode(10,20,washer,ConstructBox(9,19.5f,1),8,4,lights);
waterfall = new ParticleNode(25);
//-------------------- Materials ------------------------- //
// Wood
PresentationNode* wood = new PresentationNode;
wood->SetMaterialAmbientAndDiffuse(Color4(0.5f, 0.5f, 0.5f));
wood->SetMaterialSpecular(Color4(0.3f, 0.3f, 0.3f));
wood->SetMaterialShininess(32.0f);
wood->setTexture(LoadTextureBMP("images/wood.bin",true,128));
// Stone
PresentationNode* stone = new PresentationNode;
stone->SetMaterialAmbient(Color4(0.19225f, 0.19225f, 0.19225f));
stone->SetMaterialDiffuse(Color4(0.50754f, 0.50754f, 0.50754f));
stone->SetMaterialSpecular(Color4(0.508273f, 0.508273f, 0.508273f));
stone->SetMaterialShininess(10.2f);
stone->setTexture(LoadTextureBMP("images/stone.bin",true,128));
PresentationNode* steel = new PresentationNode;
steel->SetMaterialAmbient(Color4(0.19225f, 0.19225f, 0.19225f));
steel->SetMaterialDiffuse(Color4(0.7f, 0.7f, 0.7f));
steel->SetMaterialSpecular(Color4(0.7f, 0.7f, 0.7f));
steel->SetMaterialShininess(90.2f);
// Water
PresentationNode* water = new PresentationNode;
water->SetMaterialAmbient(Color4(0.01f, 0.01f, 0.1f));
water->SetMaterialDiffuse(Color4(0.2f, 0.2f, 0.6f));
water->SetMaterialSpecular(Color4(0.5f, 0.5f, 0.5f));
water->SetMaterialShininess(10);
water->setTexture(LoadTextureBMP("images/water.bin",true,128));
PresentationNode* blue = new PresentationNode;
blue->SetMaterialAmbient(Color4(0.01f, 0.01f, 0.1f));
blue->SetMaterialDiffuse(Color4(0.2f, 0.2f, 0.6f));
blue->SetMaterialSpecular(Color4(0.5f, 0.5f, 0.5f));
blue->SetMaterialShininess(10);
// ------------------ Transformations ------------------- //
TransformNode* wheelTransform = new TransformNode;
wheelTransform->Translate(-80.0f, 35.0f, 40.0f);
wheelTransform->Rotate(90.0f, 1.0f, 0.0f, 0.0f);
TransformNode* houseTransform = new TransformNode;
houseTransform->Translate(-100,35,0);
TransformNode* house2Transform = new TransformNode;
house2Transform->Rotate(180,0,0,1);
house2Transform->Translate(-100,-35,0);
TransformNode* wallTransform = new TransformNode;
wallTransform->Translate(0,35,0);
TransformNode* waterfallTransform = new TransformNode;
waterfallTransform->Translate(-128.0f,35,15.0f);
TransformNode* pipeTransform = new TransformNode;
pipeTransform->Rotate(-90,0,1,0);
pipeTransform->Translate(76.5f,35,125);
pipeTransform->Scale(5,5,20);
// -------------------- Lighting --------------------------/
// Light 0 - point light source in back right corner
LightNode* light0 = new LightNode(GL_LIGHT0);
light0->SetDiffuse(Color4(0.5f, 0.5f, 0.5f, 1.0f));
light0->SetSpecular(Color4(0.5f, 0.5f, 0.5f, 1.0f));
light0->SetPosition(HPoint3(90.0f, 90.0f, 30.f, 1.0f));
light0->Enable();
// Light1 - directional light from the ceiling
LightNode* light1 = new LightNode(GL_LIGHT1);
light1->SetDiffuse(Color4(0.7f, 0.7f, 0.7f, 1.0f ));
light1->SetSpecular(Color4(0.7f, 0.7f, 0.7f, 1.0f));
light1->SetPosition(HPoint3(0.0f, 0.0f, 1.0f, 0.0f));
light1->Enable();
// Light2 - spotlight - we will place at the camera location
// shining along -VPN
LightNode* light2 = new LightNode(GL_LIGHT2);
light2->SetDiffuse(Color4(0.8f, 0.8f, 0.8f, 1.0f ));
light2->SetSpecular(Color4(0.8f, 0.8f, 0.8f, 1.0f));
light2->SetPosition(HPoint3(0.0f, 0.0f, 0.0f, 1.0f));
light2->SetSpotlight(Vector3(0.0f, 0.0f, -1.0f), 32.0f, 30.0f);
light2->Enable();
lights[0]->SetDiffuse(Color4(0.8f, 0.8f, 0.8f, 1.0f));
lights[0]->SetSpecular(Color4(0.8f, 0.8f, 0.8f, 1.0f));
lights[0]->SetPosition(HPoint3(-100.0f,35.0f,90.0f,1.0f));
lights[0]->SetSpotlightDirection(Vector3(0,0,-1));
lights[0]->SetSpotlight(Vector3(0,0,-1),1,90);
lights[0]->Disable();
lights[1]->SetDiffuse(Color4(0.8f, 0.8f, 0.8f, 1.0f));
lights[1]->SetSpecular(Color4(0.8f, 0.8f, 0.8f, 1.0f));
lights[1]->SetPosition(HPoint3(100.0f,35.0f,90.0f,1.0f));
lights[1]->SetSpotlightDirection(Vector3(0,0,-1));
lights[1]->SetSpotlight(Vector3(0,0,-1),1,90);
lights[1]->Disable();
// --------------------------- Camera ----------------------- //
MyCamera = new CameraNode;
MyCamera->SetPosition(Point3(100.0f, -100.0f, 50.0f));
MyCamera->SetLookAtPt(Point3(0.0f, 0.0f, 50.0f));
MyCamera->SetViewUp(Vector3(0.0, 0.0, 1.0));
MyCamera->SetPerspective(50.0, 1.0, 1.0, 2400);
// --------------------- Scene construction ----------------- //
// Construct the scene root node
SceneRoot = new SceneNode;
// Create a scene node to hold all scene objects (other than camera
// and lights)
SceneNode* myScene = new SceneNode;
// Add the spotlight as the first child of the root node. Since this is
// accessed before the camera it will position the light relative to the
// camera
SceneRoot->AddChild(light2);
// Set the camera
SceneRoot->AddChild(MyCamera);
MyCamera->AddChild(light0);
MyCamera->AddChild(light1);
MyCamera->AddChild(lights[0]);
MyCamera->AddChild(lights[1]);
MyCamera->AddChild(myScene);
// Construct the room (walls, floor, ceiling)
SceneNode* skybox = ConstructRoom();
wallTransform->AddChild(ConstructWall(stone,water,movingSquare));
myScene->AddChild(wallTransform);
// Construct the wheel
AddSubTree(myScene,wood,wheelTransform,wheel);
// Place 2 Houses
wood->AddChild(houseTransform);
houseTransform->AddChild(house);
wood->AddChild(house2Transform);
house2Transform->AddChild(house);
myScene->AddChild(skybox);
AddSubTree(myScene,steel,pipeTransform,cylinder);
AddSubTree(myScene,blue,waterfallTransform,waterfall);
}
/**
* Keyboard callback.
*/
void keyboard(unsigned char key, int x, int y)
{
switch (key)
{
// Escape key
case 27:
delete MyCamera;
exit(0);
break;
// Reset the view
case 'i':
MyCamera->SetPosition(Point3(0.0f, -100.0f, 20.0f));
MyCamera->SetLookAtPt(Point3(0.0f, 0.0f, 20.0f));
MyCamera->SetViewUp(Vector3(0.0, 0.0, 1.0));
UpdateSpotlight();
glutPostRedisplay();
break;
// Roll the camera by 5 degrees
case 'r':
MyCamera->Roll(5);
glutPostRedisplay();
break;
// Roll the camera by 5 degrees (clockwise)
case 'R':
MyCamera->Roll(-5);
glutPostRedisplay();
break;
// Change the pitch of the camera by 5 degrees
case 'p':
MyCamera->Pitch(5);
UpdateSpotlight();
glutPostRedisplay();
break;
// Change the pitch of the camera by 5 degrees (clockwise)
case 'P':
MyCamera->Pitch(-5);
UpdateSpotlight();
glutPostRedisplay();
break;
// Change the heading of the camera by 5 degrees
case 'h':
MyCamera->Heading(5);
UpdateSpotlight();
glutPostRedisplay();
break;
// Change the heading of the camera by 5 degrees (clockwise)
case 'H':
MyCamera->Heading(-5);
UpdateSpotlight();
glutPostRedisplay();
break;
// slide camera right
case 'X':
MyCamera->moveHorizontal(5);
spotlight->setSpotlightDirection(Vector3(MyCamera->getPosition(), MyCamera->getLookAtPoint()));
spotlight->setPosition(HPoint3(MyCamera->getPosition().x, MyCamera->getPosition().y, MyCamera->getPosition().z, 1.0f));
glutPostRedisplay();
break;
// slide camera left
case 'x':
MyCamera->moveHorizontal(-5);
spotlight->setSpotlightDirection(Vector3(MyCamera->getPosition(), MyCamera->getLookAtPoint()));
spotlight->setPosition(HPoint3(MyCamera->getPosition().x, MyCamera->getPosition().y, MyCamera->getPosition().z, 1.0f));
glutPostRedisplay();
break;
// slide camera up
case 'Y':
MyCamera->moveVertical(5);
spotlight->setSpotlightDirection(Vector3(MyCamera->getPosition(), MyCamera->getLookAtPoint()));
spotlight->setPosition(HPoint3(MyCamera->getPosition().x, MyCamera->getPosition().y, MyCamera->getPosition().z, 1.0f));
glutPostRedisplay();
break;
// slide camera down
case 'y':
MyCamera->moveVertical(-5);
spotlight->setSpotlightDirection(Vector3(MyCamera->getPosition(), MyCamera->getLookAtPoint()));
spotlight->setPosition(HPoint3(MyCamera->getPosition().x, MyCamera->getPosition().y, MyCamera->getPosition().z, 1.0f));
glutPostRedisplay();
break;
// move camera forward
case 'F':
MyCamera->moveForwardOrBackward(-5);
spotlight->setSpotlightDirection(Vector3(MyCamera->getPosition(), MyCamera->getLookAtPoint()));
spotlight->setPosition(HPoint3(MyCamera->getPosition().x, MyCamera->getPosition().y, MyCamera->getPosition().z, 1.0f));
glutPostRedisplay();
break;
// move camera backward
case 'f':
MyCamera->moveForwardOrBackward(5);
spotlight->setSpotlightDirection(Vector3(MyCamera->getPosition(), MyCamera->getLookAtPoint()));
spotlight->setPosition(HPoint3(MyCamera->getPosition().x, MyCamera->getPosition().y, MyCamera->getPosition().z, 1.0f));
glutPostRedisplay();
break;
// Go faster
case 'V':
Velocity += 0.2f;
break;
// Go slower
case 'v':
Velocity -= 0.2f;
if (Velocity < 0.2f)
Velocity = 0.1f;
break;
default:
break;
}
}
/**
* Construct the scene
*/
void ConstructScene()
{
// Construct the lighting shader node
LightingShaderNode* lightingShader = new LightingShaderNode();
if (!lightingShader->Create("phong.vert", "phong.frag") ||
!lightingShader->GetLocations())
exit(-1);
int positionLoc = lightingShader->GetPositionLoc();
int normalLoc = lightingShader->GetNormalLoc();
// -------------------- Geometry -------------------- //
// Construct a unit square - use less subdivisions to see how
// phong shading improves the lighting
UnitSquareSurface* unitSquare = new UnitSquareSurface(2, positionLoc, normalLoc);
// Construct a unit box
SceneNode* box = ConstructUnitBox(unitSquare);
// Construct a unit cylinder surface
ConicSurface* cylinder = new ConicSurface(1.0f, 1.0f, 18, 4, positionLoc, normalLoc);
// Construct a torus
TorusSurface* torus = new TorusSurface(20.0f, 5.0f, 18, 18, positionLoc, normalLoc);
// Teapot
MeshTeapot* teapot = new MeshTeapot(3, positionLoc, normalLoc);
// Sphere
SphereSection* sphere = new SphereSection(-90.0f, 90.0f, 18,
-180.0f, 180.0f, 36, 1.0f, positionLoc, normalLoc);
//-------------------- Materials ------------------------- //
// Wood
PresentationNode* wood = new PresentationNode;
wood->SetMaterialAmbientAndDiffuse(Color4(0.55f, 0.45f, 0.15f));
wood->SetMaterialSpecular(Color4(0.3f, 0.3f, 0.3f));
wood->SetMaterialShininess(64.0f);
// Silver
PresentationNode* silver = new PresentationNode;
silver->SetMaterialAmbient(Color4(0.19225f, 0.19225f, 0.19225f));
silver->SetMaterialDiffuse(Color4(0.50754f, 0.50754f, 0.50754f));
silver->SetMaterialSpecular(Color4(0.508273f, 0.508273f, 0.508273f));
silver->SetMaterialShininess(51.2f);
// Black, shiny
PresentationNode* shinyBlack = new PresentationNode;
shinyBlack->SetMaterialAmbient(Color4(0.0f, 0.0f, 0.0f));
shinyBlack->SetMaterialDiffuse(Color4(0.01f, 0.01f, 0.01f));
shinyBlack->SetMaterialSpecular(Color4(0.5f, 0.5f, 0.5f));
shinyBlack->SetMaterialShininess(32.0f);
// Shiny blue
PresentationNode* shinyBlue = new PresentationNode;
shinyBlue->SetMaterialAmbient(Color4(0.05f, 0.05f, 0.2f));
shinyBlue->SetMaterialDiffuse(Color4(0.2f, 0.2f, 0.6f));
shinyBlue->SetMaterialSpecular(Color4(0.75f, 0.75, 0.75f));
shinyBlue->SetMaterialShininess(76.8f);
// ------------------ Transformations ------------------- //
// Position the table in the room
TransformNode* tableTransform = new TransformNode;
tableTransform->Translate(-50.0f, 50.0f, 0.0f);
tableTransform->Rotate(30.0f, 0.0f, 0.0f, 1.0f);
// Teapot transform
TransformNode* teapotTransform = new TransformNode;
teapotTransform->Translate(0.0f, 0.0f, 26.0f);
teapotTransform->Scale(2.5f, 2.5f, 2.5f);
// Torus
TransformNode* torusTransform = new TransformNode;
torusTransform->Translate(0.0f, 90.0f, 20.0f);
torusTransform->Rotate(60.0f, 1.0f, 0.0f, 0.0f);
// Sphere
TransformNode* sphereTransform = new TransformNode;
sphereTransform->Translate(80.0f, 20.0f, 10.0f);
sphereTransform->Scale(10.0f, 10.0f, 10.0f);
// --------------------------- Camera ----------------------- //
MyCamera = new CameraNode;
MyCamera->SetPosition(Point3(0.0f, -100.0f, 20.0f));
MyCamera->SetLookAtPt(Point3(0.0f, 0.0f, 20.0f));
MyCamera->SetViewUp(Vector3(0.0, 0.0, 1.0));
MyCamera->SetPerspective(50.0, 1.0, 1.0, 300.0);
// -------------------- Lighting --------------------------/
// Set the global light ambient
Color4 globalAmbient(0.4f, 0.4f, 0.4f, 1.0f);
lightingShader->SetGlobalAmbient(globalAmbient);
// Light 0 - point light source in back right corner
LightNode* light0 = new LightNode(0);
light0->SetDiffuse(Color4(0.5f, 0.5f, 0.5f, 1.0f));
light0->SetSpecular(Color4(0.5f, 0.5f, 0.5f, 1.0f));
light0->SetPosition(HPoint3(90.0f, 90.0f, 30.f, 1.0f));
light0->Enable();
// Light1 - directional light from the ceiling
LightNode* light1 = new LightNode(1);
light1->SetDiffuse(Color4(0.7f, 0.7f, 0.7f, 1.0f ));
light1->SetSpecular(Color4(0.7f, 0.7f, 0.7f, 1.0f));
light1->SetPosition(HPoint3(0.0f, 0.0f, 1.0f, 0.0f));
light1->Enable();
// Spotlight - reddish spotlight - we will place at the camera location
// shining along -VPN
Spotlight = new LightNode(2);
Spotlight->SetDiffuse(Color4(0.5f, 0.1f, 0.1f, 1.0f ));
Spotlight->SetSpecular(Color4(0.5f, 0.1f, 0.1f, 1.0f));
Point3 pos = MyCamera->GetPosition();
Spotlight->SetPosition(HPoint3(pos.x, pos.y, pos.z, 1.0f));
Vector3 dir = MyCamera->GetViewPlaneNormal() * -1.0f;
Spotlight->SetSpotlight(dir, 32.0f, 30.0f);
Spotlight->Enable();
// --------------------- Scene construction ----------------- //
// Construct the scene root node
SceneRoot = new SceneNode;
SceneRoot->AddChild(lightingShader);
lightingShader->AddChild(MyCamera);
// Add the lights as the children of the camera
MyCamera->AddChild(light0);
light0->AddChild(light1);
light1->AddChild(Spotlight);
// Create a scene node to hold all scene objects (other than camera
// and lights)
SceneNode* myScene = new SceneNode;
// Add the scene under the last light
Spotlight->AddChild(myScene);
// Construct the room (walls, floor, ceiling)
ConstructRoom(myScene, unitSquare);
// Construct the table
SceneNode* table = ConstructTable(box, cylinder);
myScene->AddChild(wood);
wood->AddChild(tableTransform);
tableTransform->AddChild(table);
// Place a teapot on the table
tableTransform->AddChild(teapotTransform);
teapotTransform->AddChild(silver);
silver->AddChild(teapot);
// Place a torus
myScene->AddChild(shinyBlack);
shinyBlack->AddChild(torusTransform);
torusTransform->AddChild(torus);
// Place a sphere
myScene->AddChild(shinyBlue);
shinyBlue->AddChild(sphereTransform);
sphereTransform->AddChild(sphere);
}
