OpenGL-C---Tutorials/Primitives.h at master · ImInLoveWithProgramming/OpenGL-C---Tutorials · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
#pragma once

#include<glew.h>
#include<glfw3.h>

#include<vector>
#include"Vertex.h"

class Primitive
{
private:
	std::vector<Vertex> vertices;
	std::vector<GLuint> indices;

public:
	Primitive() {}
	virtual ~Primitive() {}

	//Functions
	void set(const Vertex* vertices,
		const unsigned nrOfVertices,
		const GLuint* indices,
		const unsigned nrOfIndices)
	{
		for (size_t i = 0; i < nrOfVertices; i++)
		{
			this->vertices.push_back(vertices[i]);
		}

		for (size_t i = 0; i < nrOfIndices; i++)
		{
			this->indices.push_back(indices[i]);
		}
	}

	inline Vertex* getVertices() { return this->vertices.data(); }
	inline GLuint* getIndices() { return this->indices.data(); }
	inline const unsigned getNrOfVertices() { return this->vertices.size(); }
	inline const unsigned getNrOfIndices() { return this->indices.size(); }
};

class Triangle : public Primitive
{
public:
	Triangle()
		: Primitive()
	{
		Vertex vertices[] =
		{
			//Position								//Color							//Texcoords					//Normals
			glm::vec3(0.f, 0.5f, 0.f),				glm::vec3(1.f, 0.f, 0.f),		glm::vec2(0.5f, 1.f),		glm::vec3(0.f, 0.f, 1.f),
			glm::vec3(-0.5f, -0.5f, 0.f),			glm::vec3(0.f, 1.f, 0.f),		glm::vec2(0.f, 0.f),		glm::vec3(0.f, 0.f, 1.f),
			glm::vec3(0.5f, -0.5f, 0.f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(1.f, 0.f),		glm::vec3(0.f, 0.f, 1.f),
		};
		unsigned nrOfVertices = sizeof(vertices) / sizeof(Vertex);

		GLuint indices[] =
		{
			0, 1, 2	//Triangle 1
		};
		unsigned nrOfIndices = sizeof(indices) / sizeof(GLuint);

		this->set(vertices, nrOfVertices, indices, nrOfIndices);
	}
};

class Quad : public Primitive
{
public:
	Quad()
		: Primitive()
	{
		Vertex vertices[] =
		{
			//Position								//Color							//Texcoords					//Normals
			glm::vec3(-0.5f, 0.5f, 0.f),			glm::vec3(1.f, 0.f, 0.f),		glm::vec2(0.f, 1.f),		glm::vec3(0.f, 0.f, 1.f),
			glm::vec3(-0.5f, -0.5f, 0.f),			glm::vec3(0.f, 1.f, 0.f),		glm::vec2(0.f, 0.f),		glm::vec3(0.f, 0.f, 1.f),
			glm::vec3(0.5f, -0.5f, 0.f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(1.f, 0.f),		glm::vec3(0.f, 0.f, 1.f),
			glm::vec3(0.5f, 0.5f, 0.f),				glm::vec3(1.f, 1.f, 0.f),		glm::vec2(1.f, 1.f),		glm::vec3(0.f, 0.f, 1.f)
		};
		unsigned nrOfVertices = sizeof(vertices) / sizeof(Vertex);

		GLuint indices[] =
		{
			0, 1, 2,	//Triangle 1
			0, 2, 3		//Triangle 2
		};
		unsigned nrOfIndices = sizeof(indices) / sizeof(GLuint);

		this->set(vertices, nrOfVertices, indices, nrOfIndices);
	}
};

class Pyramid : public Primitive
{
public:
	Pyramid()
		: Primitive()
	{
		Vertex vertices[] =
		{
			//Position								//Color							//Texcoords					//Normals
			//Triangle front
			glm::vec3(0.f, 0.5f, 0.f),				glm::vec3(1.f, 0.f, 0.f),		glm::vec2(0.5f, 1.f),		glm::vec3(0.f, 0.f, 1.f),
			glm::vec3(-0.5f, -0.5f, 0.5f),			glm::vec3(0.f, 1.f, 0.f),		glm::vec2(0.f, 0.f),		glm::vec3(0.f, 0.f, 1.f),
			glm::vec3(0.5f, -0.5f, 0.5f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(1.f, 0.f),		glm::vec3(0.f, 0.f, 1.f),

			//Triangle left
			glm::vec3(0.f, 0.5f, 0.f),				glm::vec3(1.f, 1.f, 0.f),		glm::vec2(0.5f, 1.f),		glm::vec3(-1.f, 0.f, 0.f),
			glm::vec3(-0.5f, -0.5f, -0.5f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(0.f, 0.f),		glm::vec3(-1.f, 0.f, 0.f),
			glm::vec3(-0.5f, -0.5f, 0.5f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(1.f, 0.f),		glm::vec3(-1.f, 0.f, 0.f),

			//Triangle back
			glm::vec3(0.f, 0.5f, 0.f),				glm::vec3(1.f, 1.f, 0.f),		glm::vec2(0.5f, 1.f),		glm::vec3(0.f, 0.f, -1.f),
			glm::vec3(0.5f, -0.5f, -0.5f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(0.f, 0.f),		glm::vec3(0.f, 0.f, -1.f),
			glm::vec3(-0.5f, -0.5f, -0.5f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(1.f, 0.f),		glm::vec3(0.f, 0.f, -1.f),

			//Triangles right
			glm::vec3(0.f, 0.5f, 0.f),				glm::vec3(1.f, 1.f, 0.f),		glm::vec2(0.5f, 1.f),		glm::vec3(1.f, 0.f, 0.f),
			glm::vec3(0.5f, -0.5f, 0.5f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(0.f, 0.f),		glm::vec3(1.f, 0.f, 0.f),
			glm::vec3(0.5f, -0.5f, -0.5f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(1.f, 0.f),		glm::vec3(1.f, 0.f, 0.f),
		};
		unsigned nrOfVertices = sizeof(vertices) / sizeof(Vertex);

		this->set(vertices, nrOfVertices, nullptr, 0);
	}
};

class Cube : public Primitive
{
public:
	Cube()
		: Primitive()
	{
		Vertex vertices[] =
		{
			//Position								//Color							//Texcoords					//Normals
			glm::vec3(-0.5f, 0.5f, 0.5f),			glm::vec3(1.f, 0.f, 0.f),		glm::vec2(0.f, 1.f),		glm::vec3(0.f, 0.f, 1.f),
			glm::vec3(-0.5f, -0.5f, 0.5f),			glm::vec3(0.f, 1.f, 0.f),		glm::vec2(0.f, 0.f),		glm::vec3(0.f, 0.f, 1.f),
			glm::vec3(0.5f, -0.5f, 0.5f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(1.f, 0.f),		glm::vec3(0.f, 0.f, 1.f),
			glm::vec3(0.5f, 0.5f, 0.5f),			glm::vec3(1.f, 1.f, 0.f),		glm::vec2(1.f, 1.f),		glm::vec3(0.f, 0.f, 1.f),

			glm::vec3(0.5f, 0.5f, -0.5f),			glm::vec3(1.f, 0.f, 0.f),		glm::vec2(0.f, 1.f),		glm::vec3(0.f, 0.f, -1.f),
			glm::vec3(0.5f, -0.5f, -0.5f),			glm::vec3(0.f, 1.f, 0.f),		glm::vec2(0.f, 0.f),		glm::vec3(0.f, 0.f, -1.f),
			glm::vec3(-0.5f, -0.5f, -0.5f),			glm::vec3(0.f, 0.f, 1.f),		glm::vec2(1.f, 0.f),		glm::vec3(0.f, 0.f, -1.f),
			glm::vec3(-0.5f, 0.5f, -0.5f),			glm::vec3(1.f, 1.f, 0.f),		glm::vec2(1.f, 1.f),		glm::vec3(0.f, 0.f, -1.f)
		};
		unsigned nrOfVertices = sizeof(vertices) / sizeof(Vertex);

		GLuint indices[] =
		{
			0, 1, 2,
			0, 2, 3,

			7, 6, 1,
			7, 1, 0,

			4, 5, 6,
			4, 6, 7,

			3, 2, 5,
			3, 5, 4
		};
		unsigned nrOfIndices = sizeof(indices) / sizeof(GLuint);

		this->set(vertices, nrOfVertices, indices, nrOfIndices);
	}
};