#include "WireCube.h"

void WireCube::setup()
{		
	_cube_vertices = 
	{ { -1.0, -1.0, 1.0}, { 1.0, -1.0, 1.0}, { 1.0, 1.0, 1.0},
	  { -1.0, 1.0, 1.0}, { 1.0, 1.0, 1.0}, { -1.0, -1.0, 1.0},

	  { -1.0, -1.0, -1.0}, { 1.0, -1.0, -1.0}, { 1.0, 1.0, -1.0},
	  { -1.0, 1.0, -1.0}, { 1.0, 1.0, -1.0}, { -1.0, -1.0, -1.0},

	  { -1.0, 1.0, -1.0}, { 1.0, 1.0, -1.0}, { 1.0, 1.0, 1.0},
	  { -1.0, 1.0, 1.0}, { -1.0, 1.0, -1.0}, { 1.0, 1.0, -1.0},
	  
	  { -1.0, -1.0, -1.0}, { 1.0, -1.0, -1.0}, { 1.0, -1.0, 1.0},
	  { -1.0, -1.0, 1.0}, { -1.0, -1.0, -1.0}, { 1.0, -1.0, -1.0},

	  { -1.0, -1.0, -1.0}, { -1.0, -1.0, 1.0}, { -1.0, 1.0, 1.0},
	  { -1.0, 1.0, -1.0}, { -1.0, -1.0, -1.0}, { -1.0, -1.0, 1.0},

	  { 1.0, -1.0, -1.0}, { 1.0, -1.0, 1.0}, { 1.0, 1.0, 1.0},
	  { 1.0, 1.0, -1.0}, { 1.0, -1.0, -1.0}, { 1.0, -1.0, 1.0}};

	glGenVertexArrays(1, &_vaoHandle);
	glBindVertexArray(_vaoHandle);

	glGenBuffers(1, &_vbo_vertices);
	glBindBuffer(GL_ARRAY_BUFFER, _vbo_vertices);
	glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * _cube_vertices.size() * 3, _cube_vertices.data(), GL_STATIC_DRAW);

	glVertexAttribPointer(
		0,   //attr number = 0
		3,
		GL_FLOAT,
		GL_FALSE,
		0,
		(void*)0);
	glEnableVertexAttribArray(0);  //attr number = 0	
}

WireCube::WireCube()
{
	setup();
}

void WireCube::draw(ShaderProgram * shader, glm::mat4x4 proj_matrix, glm::mat4x4 view_matrix)
{		
	_model.glPushMatrix();
	effectTransformations();
	glm::mat4 mvpMatrix = proj_matrix * view_matrix * _model.getMatrix();
	glUniformMatrix4fv(shader->uniform("mvp"), 1, GL_FALSE, glm::value_ptr(mvpMatrix));

	glLineWidth(2);
	glBindVertexArray(_vaoHandle);	
	for (int i = 0; i < _cube_vertices.size() * 3; i += 3)
		glDrawArrays(GL_LINE_LOOP, i, 3);	
	_model.glPopMatrix();
}

DrawableType WireCube::getType()
{
	return DrawableType::WIRE_CUBE;
}

WireCube::~WireCube()
{
}