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using System;
using System.Drawing;
using static Unicity.Renderer.GraphicsRenderer;
using static SharpGL.OpenGL;
namespace Unicity.Renderer.Shapes
{
public class Triangle : Shape
{
public Triangle(PointF pos1, PointF pos2, PointF pos3)
{
Init(pos1.X, pos1.Y, pos2.X, pos2.Y, pos3.X, pos3.Y);
}
public Triangle(float x1, float y1, float x2, float y2, float x3, float y3)
{
Init(x1, y1, x2, y2, x3, y3);
}
private void Init(float x1, float y1, float x2, float y2, float x3, float y3)
{
float[] data =
{
x1, y1,
x2, y2,
x3, y3
};
GL.GenBuffers(1, buffers);
GL.BindBuffer(GL_ARRAY_BUFFER, buffers[0]);
GL.BufferData(GL_ARRAY_BUFFER, data, GL_STATIC_DRAW);
}
internal override void Render()
{
GL.EnableVertexAttribArray(0);
GL.BindBuffer(GL_ARRAY_BUFFER, buffers[0]);
GL.VertexAttribPointer(0, 2, GL_FLOAT, false, 0, IntPtr.Zero);
GL.DrawArrays(GL_TRIANGLES, 0, 3);
GL.DisableVertexAttribArray(0);
}
}
}
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