OpenGL rotation, rotating the wrong direction, what is wrong? - opengl

Question

I have a very simple pyramid shape made up of 6 triangles defined this way:
unsigned int indices[] = {
0, 1, 2, // front triange
0, 3, 4, // back triangle
0, 3, 1, // left side triangle
0, 2, 4, // right side triangle
1, 3, 4, // square base triangle 1
4, 2, 1 // square base triangle 2
};
float pyramid[] = {
0.0f, 1.0f, 0.0f, // top of the pyramid
// base vertices (a square)
-1.0f, -1.0f, 1.0f, // left front
1.0f, -1.0f, 1.0f, // right front
-1.0f, -1.0f, -1.0f, // left back
1.0f, -1.0f, -1.0f, // right back
};
I am trying to rotate it around the Y axis, but when I do so, it is not rotating continously, it ends up rotating a bit to left, and then rotating a bit to right, left-right, left-right and so on, but never does a full 360 degree rotation.
My rotation code is this:
glm::mat4 scale = glm::scale(glm::mat4(1.0f), glm::vec3(0.7f));
glm::mat4 rotate = glm::rotate(glm::mat4(1.0f), angle, glm::vec3(0.0f, 1.0f, 0.0f));
glm::mat4 worldView = rotate * scale;
glUniformMatrix4fv(hWorld, 1, GL_TRUE, glm::value_ptr(worldView));
The angle I am incrementing it in every loop:
static float angle = 0.0f;
angle += 0.001f;
I am giving up, so I hope someone could shed some light on my mistake.
My vertex shader:
#version 330
layout (location = 0) in vec3 pos;
uniform mat4 world;
out vec4 color;
void main()
{
gl_Position = world * vec4(0.5 * pos, 1.0f);
color = 8 * vec4(clamp(pos, 0.0f, 0.1f), 1.0f);
}

Answer 1

So the issue was that I mixed up the vertex arrays:
unsigned int indices[] = {
0, 1, 2, // front triange
0, 3, 4, // back triangle
0, 3, 1, // left side triangle
0, 2, 4, // right side triangle
1, 3, 4, // square base triangle 1
4, 2, 1 // square base triangle 2
};
Should be:
// index array
unsigned int indices[] = {
0, 1, 2,
0, 3, 1,
0, 4, 3,
0, 2, 4,
1, 3, 4,
4, 2, 1
};
The order of the vertices should go counter clockwise.