45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
#ifndef ECSGAME_LINES_H
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#define ECSGAME_LINES_H
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#include "../../Util/geometry.h"
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#include <GLFW/glfw3.h>
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#include <glad/glad.h>
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#include <glm/fwd.hpp>
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#include <vector>
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struct Lines {
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explicit Lines(std::vector<Vector> lines) : vertex_count(lines.size()) {
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GLfloat linearray[vertex_count * 3];
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int pos = 0;
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for (const Vector &vec : lines) {
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linearray[pos++] = vec[0];
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linearray[pos++] = vec[1];
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linearray[pos++] = vec[2];
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}
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glGenVertexArrays(1, &lineVAO);
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glGenBuffers(1, &lineVBO);
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glBindVertexArray(lineVAO);
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glBindBuffer(GL_ARRAY_BUFFER, lineVBO);
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glBufferData(GL_ARRAY_BUFFER, sizeof(linearray), &linearray, GL_STATIC_DRAW);
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glEnableVertexAttribArray(0);
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glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (void *)0);
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}
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void render() const {
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glEnable(GL_LINE_SMOOTH);
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glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
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glBindVertexArray(lineVAO);
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glLineWidth(1.0f);
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glDrawArrays(GL_LINES, 0, vertex_count);
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glLineWidth(1.0f);
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}
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private:
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GLuint lineVAO, lineVBO;
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int vertex_count;
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};
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#endif // ECSGAME_LINES_H
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