#include "scene.h"
#include "utils.h"
#include "skybox.h"
#include "model.h"
#include "ground.h"
#include "light.h"
#include "camera.h"

GLuint texture;
SkyBox skybox;
Model model;
Ground ground;
DirectionLight light(GL_LIGHT0);
PointLight light1(GL_LIGHT1);
PointLight light2(GL_LIGHT2);
SpotLight light3(GL_LIGHT3);
Camera camera;

void Init() {
	glMatrixMode(GL_PROJECTION);
	gluPerspective(50.0f, 800.0f / 600.0f, 0.1f, 1000.0f);

	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();

	texture = CreateTexture2DFromBMP("Res/earth.bmp");

	skybox.Init("Res/");
	model.Init("Res/Sphere.obj");
	model.mTexture = CreateTexture2DFromBMP("Res/earth.bmp");

	light.SetAmbientColor(0.1f, 0.1f, 0.1f, 1.0f);
	light.SetDiffuseColor(0.8f, 0.8f, 0.8f, 1.0f);
	light.SetSpecularColor(1.0f, 1.0f, 1.0f, 1.0f);
	light.SetPosition(0.0f, 1.0f, 0.0f);

	light1.SetAmbientColor(0.1f,0.1f,0.1f,1.0f);
	light1.SetDiffuseColor(0.8f,0.8f,0.8f,1.0f);
	light1.SetSpecularColor(1.0f,1.0f,1.0f,1.0f);
	light1.SetPosition(0.0f,0.0f,0.0f);//把点光源放到摄像机位置
	light1.SetConstAttenuation(1.0f);
	light1.SetLinearAttenuation(0.2f);

	light2.SetAmbientColor(0.1f, 0.1f, 0.1f, 1.0f);
	light2.SetDiffuseColor(0.1f, 0.4f, 0.6f, 1.0f);
	light2.SetSpecularColor(1.0f, 1.0f, 1.0f, 1.0f);
	light2.SetPosition(0.0f, 0.0f, -30.0f);//把点光源放到摄像机位置
	light2.SetConstAttenuation(1.0f);
	light2.SetLinearAttenuation(0.2f);

	light3.SetAmbientColor(0.1f, 0.1f, 0.1f, 1.0f);
	light3.SetDiffuseColor(0.0f, 0.8f, 0.0f, 1.0f);
	light3.SetSpecularColor(1.0f,0.0f,0.0f,1.0f);
	light3.SetPosition(10.0f,50.0f,-30.0f);
	light3.SetDirection(0.0,-1.0f,0.0f);//设置朝向
	light3.SetExpone(5.0f);//设置聚光度 5度
	light3.SetCutoff(10.0f);//设置照射范围 10度


	model.SetAmbientMaterial(0.1f, 0.1f, 0.1f, 1.0f);
	model.SetDiffuseMaterial(0.4f, 0.4f, 0.4f, 1.0f);
	model.SetSpecularMaterial(1.0f, 1.0f, 1.0f, 1.0f);

	ground.SetAmbientMaterial(0.1f, 0.1f, 0.1f, 1.0f);
	ground.SetDiffuseMaterial(0.4f, 0.4f, 0.4f, 1.0f);
	ground.SetSpecularMaterial(0.0f, 0.0f, 0.0f, 1.0f);

	camera.mViewportWidth = 800.0f;
	camera.mViewportHeight = 600.0f;
}

void DrawMutipl() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);
	glLoadIdentity();

	glPushMatrix();
	glTranslatef(0.0f, 0.0f, -5.0f);

	static float r = 0;
	glPushMatrix();
	glRotatef(r, 0.0f, 1.0f, 0.0f);

	r += 0.1f;

	glBegin(GL_TRIANGLES);
	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.0f, 0.25f, -2.5f);
	glEnd();

	glPopMatrix();
	glPopMatrix();

}

void DrawPushMatrix() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);
	glLoadIdentity();//重置模型视口矩阵为单位矩阵

	glPushMatrix();
	glTranslatef(-1.0f, 0.0f, 0.0f);
	glBegin(GL_TRIANGLES);
	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.0f, 0.25f, -2.5f);
	glEnd();
	glPopMatrix();

	glPushMatrix();
	glTranslatef(1.0f, 0.0f, 0.0f);
	glBegin(GL_TRIANGLES);
	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.0f, 0.25f, -2.5f);
	glEnd();
	glPopMatrix();

}

void DrawRoated() {
	glClearColor(30.0f / 255.0f, 30.0f / 255.0f, 30.0f / 255.0f, 1.0f);
	glClear(GL_COLOR_BUFFER_BIT);


	static float r = 0.0f;

	glLoadIdentity();
	glRotated(r, 0, 0, 1);// （角度，x,y,z）

	r += 0.1f;

	glBegin(GL_TRIANGLES);
	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.0f, 0.25f, -2.5f);
	glEnd();
}

void DrawTranslate() {
	glClearColor(30.0f / 255.0f, 30.0f / 255.0f, 30.0f / 255.0f, 1.0f);
	glClear(GL_COLOR_BUFFER_BIT);

	glLoadIdentity();
	glTranslatef(0, 0, -2.5f);

	glBegin(GL_TRIANGLES);
	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, 0.0f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25f, 0.0f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.0f, 0.25f, 0.0f);
	glEnd();
}


void DrawPolygon() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	glBegin(GL_POLYGON);

	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(1.0f, 0.25f, -2.5f);
	glColor4ub(255, 0, 0, 255); glVertex3f(0.5f, 0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(-0.1f, 0.1f, -2.5f);

	glEnd();

}


void DrawQuadStrip() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	glBegin(GL_QUAD_STRIP);
	glColor4ub(255, 0, 0, 255); glVertex3f(-0.25f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.25f, -0.25f, -2.5f);
	glColor4ub(255, 0, 0, 255); glVertex3f(-0.25f, 0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.25, 0.25, -2.5f);

	glColor4ub(255, 0, 0, 255); glVertex3f(-0.25f, 0.5f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.25, 0.5, -2.5f);
	glEnd();
}

void DrawQuads() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	glBegin(GL_QUADS);

	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(1.0f, 0.5f, -2.5f);
	glColor4ub(255, 0, 0, 255); glVertex3f(0.5f, 0.5f, -2.5f);

	glEnd();
}

void DrawLineStrip() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	glLineWidth(10.0f);
	glBegin(GL_LINE_STRIP);

	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.5f, 0.25f, -2.5f);

	glEnd();
}

void DrawLineLoop() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	glLineWidth(10.0f);
	glBegin(GL_LINE_LOOP);

	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.5f, 0.25f, -2.5f);

	glEnd();
}

void DrawLines() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	glLineWidth(10.0f);
	glBegin(GL_LINES);

	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25f, -2.5f);

	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.5f, 0.25f, -2.5f);

	glEnd();
}

void DrawPoints() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	glPointSize(10.0f);
	glBegin(GL_POINTS);
	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.5f, -0.25f, -2.5f);
	glEnd();
}

void DrawTriangleFan() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	glBegin(GL_TRIANGLE_FAN);
	glColor4ub(255, 0, 0, 255); glVertex3f(0.0f, -0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.4f, 0.0f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.2f, 0.15f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.0f, 0.2f, -2.5f);
	glEnd();
}

void DrawTriangleStrip() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	glBegin(GL_TRIANGLE_STRIP);

	glColor4ub(255, 0, 0, 255); glVertex3f(-0.5f, -0.25f, -2.5f);
	glColor4ub(0, 0, 255, 255); glVertex3f(0.5f, -0.25, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(-0.5f, 0.25f, -2.5f);
	glColor4ub(0, 255, 0, 255); glVertex3f(0.5f, 0.25f, -2.5f);

	glEnd();
}

void DrawTriangles() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT);

	glBegin(GL_TRIANGLES);

	glColor4ub(255, 255, 255, 255);
	glVertex3f(-0.2f, -0.2f, -1.5f);

	glColor4ub(255, 0, 0, 255);
	glVertex3f(0.2f, -0.2f, -1.5f);

	glColor4ub(0, 255, 0, 255);
	glVertex3f(0.0f, 0.2f, -1.5f);

	glEnd();
}

void DrawEnableLight() {
	glClearColor(30.0f / 255.0f, 30.0f / 255.0f, 30.0f / 255.0f, 1.0f);
	glClear(GL_COLOR_BUFFER_BIT);
	glEnable(GL_LIGHTING);

	glEnable(GL_LIGHT0);
	glEnable(GL_CULL_FACE);//????
	float lightPos[] = { 0.0f,1.0f,0.0f,0.0f };
	glLightfv(GL_LIGHT0, GL_POSITION, lightPos);//设置方向光的2位置

	float whiteColor[] = { 1.0f, 1.0f, 1.0f, 1.0f };
	glLightfv(GL_LIGHT0, GL_AMBIENT, whiteColor);//设置环境光

	float ambientMat[] = { 0.07f,0.07f, 0.07f, 1.0f };//设置物体表面材质的反射系数
	glMaterialfv(GL_FRONT, GL_AMBIENT, ambientMat);

	float diffuseMat[] = { 0.4f,0.4f,0.4f,1.0f };//设置漫反射系数

	glMaterialfv(GL_FRONT, GL_DIFFUSE, diffuseMat);

	float specularMat[] = { 0.9f,0.9f,0.9f,1.0f };//设置镜面反射系数
	glMaterialfv(GL_FRONT, GL_SPECULAR, specularMat);

	glBegin(GL_QUADS);
	glColor4ub(255, 255, 255, 255);
	glVertex3f(-0.5f, -0.2f, -0.5f);
	glVertex3f(0.5f, -0.2f, -0.5f);
	glVertex3f(0.5f, -0.2f, -1.0f);
	glVertex3f(-0.5f, -0.2f, -1.0f);
	glEnd();
}

void DrawTexture() {
	glClearColor(0.1f, 0.4f, 0.6f, 1.0f);
	glClear(GL_COLOR_BUFFER_BIT);

	//开启纹理
	glEnable(GL_TEXTURE_2D);
	//绑定纹理
	glBindTexture(GL_TEXTURE_2D, texture);

	glBegin(GL_QUADS);
	glColor4ub(255, 255, 255, 255);
	glTexCoord2f(0.0f, 0.0f); glVertex3f(-0.1f, -0.1f, -0.4f);
	glTexCoord2f(1.0f, 0.0f); glVertex3f(0.1f, -0.1f, -0.4f);
	glTexCoord2f(1.0f, 1.0f); glVertex3f(0.1f, 0.1f, -0.4f);
	glTexCoord2f(0.0f, 1.0f); glVertex3f(-0.1f, 0.1f, -0.4f);
	glEnd();
}

void DrawDepthBk() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清除深度缓冲区和颜色缓存区

	glEnable(GL_DEPTH_TEST);//开启深度测试

	glBegin(GL_QUADS);
	glColor4ub(255, 0, 0, 0);
	glVertex3f(-0.1f, -0.1f, -0.4f);
	glVertex3f(0.1f, -0.1f, -0.4f);
	glVertex3f(0.1f, 0.1f, -0.4f);
	glVertex3f(-0.1f, 0.1f, -0.4f);
	glEnd();

	glBegin(GL_QUADS);
	glColor4ub(0, 255, 0, 0);
	glVertex3f(-0.1f, -0.1f, -0.6f);
	glVertex3f(0.1f, -0.1f, -0.6f);
	glVertex3f(0.1f, 0.1f, -0.6f);
	glVertex3f(-0.1f, 0.1f, -0.6f);
	glEnd();
}

void DrawDepth() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清除深度缓冲区和颜色缓存区

	//glEnable(GL_DEPTH_TEST);//开启深度测试

	GLuint texture2;

	texture2 = CreateTexture2DFromBMP("Res/test.bmp");

	glEnable(GL_TEXTURE_2D);
	glBindTexture(GL_TEXTURE_2D, texture2);

	glBegin(GL_QUADS);


	glColor4ub(255, 255, 255, 255);
	glTexCoord2d(0.0f, 0.0f); glVertex3f(-0.1f, -0.1f, -0.4f);
	glTexCoord2d(1.0f, 0.0f); glVertex3f(0.1f, -0.1f, -0.4f);
	glTexCoord2d(1.0f, 1.0f); glVertex3f(0.1f, 0.1f, -0.4f);
	glTexCoord2d(0.0f, 1.0f); glVertex3f(-0.1f, 0.1f, -0.4f);
	glEnd();

	glBindTexture(GL_TEXTURE_2D, 0);
	glBegin(GL_QUADS);
	glColor4ub(0, 255, 0, 0);
	glVertex3f(-0.1f, -0.1f, -0.6f);
	glVertex3f(0.1f, -0.1f, -0.6f);
	glVertex3f(0.1f, 0.1f, -0.6f);
	glVertex3f(-0.1f, 0.1f, -0.6f);
	glEnd();
}

void DrawSkyBox() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清除深度缓冲区和颜色缓存区
	skybox.Draw();

	glEnable(GL_DEPTH_TEST);//开启深度测试
	glBindTexture(GL_TEXTURE_2D, 0);
	glBegin(GL_QUADS);
	glColor4ub(0, 255, 0, 0);
	glVertex3f(-0.1f, -0.1f, -0.6f);
	glVertex3f(0.1f, -0.1f, -0.6f);
	glVertex3f(0.1f, 0.1f, -0.6f);
	glVertex3f(-0.1f, 0.1f, -0.6f);
	glEnd();

}

void DrawModel() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清除深度缓冲区和颜色缓存区
	light.Enable();
	skybox.Draw();
	model.Draw();
	ground.Draw();
}

void DrawLight() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清除深度缓冲区和颜色缓存区
	light1.Enable();
	light2.Enable();
	light3.Enable();
	ground.Draw();
}

void DrawCamera() {
	glClearColor(0, 0, 0, 0);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清除深度缓冲区和颜色缓存区

	float frameTime = GetFrameTime();
	camera.Update(frameTime);

	light1.Enable();
	light1.Update(camera.mPos.x, camera.mPos.y, camera.mPos.z);
	light2.Enable();
	light2.Update(camera.mPos.x, camera.mPos.y, camera.mPos.z);
	light3.Enable();
	light3.Update(camera.mPos.x, camera.mPos.y, camera.mPos.z);
	ground.Draw();
}


void Draw() {
	DrawCamera();
}

void OnKeyDown(char code)
{
	switch (code) {
	case 'A':
		camera.mbMoveLeft = true;
		break;
	case 'D':
		camera.mbMoveRight = true;
		break;
	case 'W':
		camera.mbMoveForward = true;
		break;
	case 'S':
		camera.mbMoveBack = true;
		break;
	}
}

void OnKeyUp(char code)
{
	switch (code) {
	case 'A':
		camera.mbMoveLeft = false;
		break;
	case 'D':
		camera.mbMoveRight = false;
		break;
	case 'W':
		camera.mbMoveForward = false;
		break;
	case 'S':
		camera.mbMoveBack = false;
		break;
	}
}

void OnMouseMove(float deltaX, float deltaY)
{
	float angleRotateByUp = deltaX / 1000.0f;
	float angleRotateByRight = deltaY / 1000.0f;
	camera.Yaw(-angleRotateByUp);
	camera.Picth(-angleRotateByRight);
}