DragonEngine/ModuleCamera.cpp at master · Dartemiss/DragonEngine · GitHub

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#include"Globals.h"
#include"Application.h"
#include"ModuleCamera.h"
#include"ModuleRender.h"
#include"ModuleWindow.h"
#include"ModuleInput.h"
#include"ModuleProgram.h"
#include"ModuleModelLoader.h"
#include"ModuleScene.h"
#include"ComponentCamera.h"
#include"Imgui/imgui.h"
#include"MathGeoLib/Geometry/Frustum.h"
#include"MathGeoLib/Math/float4.h"
#include"SDL/SDL.h"
#include"GL/glew.h"
#include<math.h>


ModuleCamera::ModuleCamera()
{

}


ModuleCamera::~ModuleCamera()
{
}

boolModuleCamera::Init()
{

	editorCamera = newComponentCamera(App->scene->GetRoot());
	editorCamera->SetFarPlaneDistance(300.0f);

returntrue;
}

update_status ModuleCamera::PreUpdate()
{
returnUPDATE_CONTINUE;
}

update_status ModuleCamera::Update()
{
if (!SceneNotActive)
returnUPDATE_CONTINUE;

	float3 mov = float3::zero;

if(App->input->GetKey(SDL_SCANCODE_Q))
	{
 mov += editorCamera->frustum->up * movementSpeed;
	}

if (App->input->GetKey(SDL_SCANCODE_E))
	{
 mov -= editorCamera->frustum->up * movementSpeed;
	}
if (App->input->GetKey(SDL_SCANCODE_D))
	{
 mov += editorCamera->frustum->WorldRight() * movementSpeed;
	}
if (App->input->GetKey(SDL_SCANCODE_A))
	{
 mov -= editorCamera->frustum->WorldRight() * movementSpeed;
	}
if (App->input->GetKey(SDL_SCANCODE_W))
	{
 mov += editorCamera->frustum->front * movementSpeed;
	}
if (App->input->GetKey(SDL_SCANCODE_S))
	{
 mov -= editorCamera->frustum->front * movementSpeed;
	}


float rotY = 0.0f;
float rotX = 0.0f;
//Rotation
if (App->input->GetKey(SDL_SCANCODE_LEFT))
	{
 rotY = 0.02f;

	}

if (App->input->GetKey(SDL_SCANCODE_RIGHT))
	{
 rotY = -0.02f;
	}
if (App->input->GetKey(SDL_SCANCODE_UP))
	{
 rotX = 0.02f;

	}

if (App->input->GetKey(SDL_SCANCODE_DOWN))
	{
 rotX = -0.02f;
	}

//FPS ROTATION
if(App->input->GetMouseButtonDown(SDL_BUTTON_RIGHT) == KEY_REPEAT)
	{
float dx = App->input->GetMouseMotion().x;
float dy = App->input->GetMouseMotion().y;


Rotate(-dx * rotationSpeed, -dy * rotationSpeed);
	}
else
	{
Rotate(rotY, rotX);
	}


Move(mov);

//If F is pressed, camera moves to the front of the model
if(App->input->GetKey(SDL_SCANCODE_F))
	{
TranslateCameraToPoint(App->modelLoader->correctCameraPositionForModel);
	}

//If L is pressed, camera looks at model selected
if(App->input->GetKey(SDL_SCANCODE_L))
	{
LookAt(App->modelLoader->modelCenter);
	}

//Alt + Left Click Orbit arround center of the objet selected
if(App->input->GetKey(SDL_SCANCODE_LALT) && App->input->GetMouseButtonDown(SDL_BUTTON_LEFT) == KEY_REPEAT)
	{
float dx = App->input->GetMouseMotion().x;
float dy = App->input->GetMouseMotion().y;

Orbit(-dx * rotationSpeed, -dy * rotationSpeed);
	}


//Generate viewing matrix for camera movement/rotation
	editorCamera->ComputeViewMatrix();

returnUPDATE_CONTINUE;
}

update_status ModuleCamera::PostUpdate()
{
returnUPDATE_CONTINUE;
}

boolModuleCamera::CleanUp()
{
	editorCamera->CleanUp();
delete editorCamera;
returntrue;
}

voidModuleCamera::SetFOV()
{
	editorCamera->frustum->horizontalFov = 2.0f * atanf(tanf(editorCamera->frustum->verticalFov * 0.5f) *editorCamera->aspect);
	editorCamera->ComputeProjMatrix();
}

voidModuleCamera::SetAspectRatio()
{
	editorCamera->aspect = ((float)App->window->width / App->window->height);
	editorCamera->frustum->horizontalFov = 2.0f * atanf(tanf(editorCamera->frustum->verticalFov * 0.5f) *editorCamera->aspect);
	editorCamera->ComputeProjMatrix();
}

voidModuleCamera::SetAspectRatio(int newWidth, int newHeight)
{
	editorCamera->aspect = ((float)newWidth / newHeight);
	editorCamera->frustum->horizontalFov = 2.0f * atanf(tanf(editorCamera->frustum->verticalFov * 0.5f) *editorCamera->aspect);

	editorCamera->ComputeProjMatrix();

}

voidModuleCamera::Rotate(constfloat dx, constfloat dy)
{

if(dx != 0.0f)
	{
 float3x3 rotationY = float3x3::RotateY(dx);
 editorCamera->frustum->front = rotationY.Transform(editorCamera->frustum->front).Normalized();
 editorCamera->frustum->up = rotationY.Transform(editorCamera->frustum->up).Normalized();
	}

if(dy != 0.0f)
	{
 float3x3 rotationX = float3x3::RotateAxisAngle(editorCamera->frustum->WorldRight(),dy);
 editorCamera->frustum->up = rotationX.Transform(editorCamera->frustum->up).Normalized();
 editorCamera->frustum->front = rotationX.Transform(editorCamera->frustum->front).Normalized();
	}

return;
}

voidModuleCamera::Move(float3 &direction)
{
if(App->input->GetKey(SDL_SCANCODE_LSHIFT))
	{
 direction *= 3.0f;
	}

if(!direction.Equals(float3::zero))
 editorCamera->frustum->Translate(direction);

return;
}

voidModuleCamera::Orbit(constfloat dx, constfloat dy)
{
	float3 center = App->modelLoader->modelCenter;

if(dx != 0.0f)
	{
 float3x3 rot = float3x3::RotateY(dx);
 editorCamera->frustum->pos = rot.Transform(editorCamera->frustum->pos - center) + center;
	}

if (dy != 0.0f)
	{
 float3x3 rot = float3x3::RotateAxisAngle(editorCamera->frustum->WorldRight(), dy);
 editorCamera->frustum->pos = rot.Transform(editorCamera->frustum->pos - center) + center;
	}

LookAt(center);

}

voidModuleCamera::Zoom(constbool direction)
{
if(direction)
	{
Move(editorCamera->frustum->front);
	}
else
	{
Move(editorCamera->frustum->front * -1.0f);
	}

return;
}

voidModuleCamera::TranslateCameraToPoint(const float3 & newPos)
{
	editorCamera->frustum->pos = newPos;
	editorCamera->frustum->front = -float3::unitZ;
	editorCamera->frustum->up = float3::unitY;

LookAt(App->modelLoader->modelCenter);

	editorCamera->ComputeViewMatrix();

}

voidModuleCamera::SetNearPlaneDistance(constfloat nearDist)
{
	editorCamera->frustum->nearPlaneDistance = nearDist;
	editorCamera->ComputeProjMatrix();
}

voidModuleCamera::SetFarPlaneDistance(constfloat farDist)
{
	editorCamera->frustum->farPlaneDistance = farDist;
	editorCamera->ComputeProjMatrix();
}

voidModuleCamera::LookAt(const float3 &target)
{
	float3 dir = (target - editorCamera->frustum->pos).Normalized();
	float3x3 rot = float3x3::LookAt(editorCamera->frustum->front, dir, editorCamera->frustum->up, float3::unitY);
	editorCamera->frustum->front = rot.Transform(editorCamera->frustum->front).Normalized();
	editorCamera->frustum->up = rot.Transform(editorCamera->frustum->up).Normalized();
}

float4x4 ModuleCamera::GetProjMatrix() const
{
return editorCamera->proj;
}

float4x4 ModuleCamera::GetViewMatrix() const
{
return editorCamera->view;
}