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#include "fluid_cell_buffer.h"
#include <vector>
FluidCellBuffer::FluidCellBuffer(GLuint nX, GLuint nY):
_nX(nX), _nY(nY) {
glGenVertexArrays(1, &_array);
glGenBuffers(1, &_buffer);
glBindVertexArray(_array);
glBindBuffer(GL_ARRAY_BUFFER, _buffer);
const std::vector<GLfloat> data(3*nX*nY, GLfloat{});
glBufferData(
GL_ARRAY_BUFFER,
data.size() * sizeof(GLfloat),
data.data(),
GL_DYNAMIC_DRAW
);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, nullptr);
}
FluidCellBuffer::~FluidCellBuffer() {
glDeleteBuffers(1, &_buffer);
glDeleteVertexArrays(1, &_array);
}
GLuint FluidCellBuffer::getBuffer() const {
return _buffer;
}
void FluidCellBuffer::draw() const {
glBindVertexArray(_array);
glDrawArrays(GL_POINTS, 0, _nX*_nY);
}
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