attribute vec3 in_Position;
attribute vec4 in_Colour;
attribute vec2 in_TextureCoord;
attribute vec3 in_Colour0;
attribute vec2 in_Colour1;
attribute float in_Colour2;
attribute vec3 in_Colour3;
attribute float in_Colour4;
attribute vec3 in_Colour5;

#define in_Offset in_Colour0
#define in_Scale in_Colour1
#define in_Angle in_Colour2
#define in_RotationDirection in_Colour3
#define in_Animation in_Colour4
#define in_Hsv in_Colour5

varying vec2 v_vTexcoord;
varying vec4 v_vColour;
varying vec3 v_vHsv;

mat4 rotation_matrix_3d(vec3 axis, float angle) {
    float s = sin(angle);
    float c = cos(angle);
    float oc = 1.0 - c;

    return mat4(
    	oc * axis.x * axis.x + c,           oc * axis.x * axis.y - axis.z * s,  oc * axis.z * axis.x + axis.y * s,  0.0,
        oc * axis.x * axis.y + axis.z * s,  oc * axis.y * axis.y + c,           oc * axis.y * axis.z - axis.x * s,  0.0,
        oc * axis.z * axis.x - axis.y * s,  oc * axis.y * axis.z + axis.x * s,  oc * axis.z * axis.z + c,           0.0,
        0.0,                                0.0,                                0.0,                                1.0);
}

void main() {
	mat4 rotmat = rotation_matrix_3d(in_RotationDirection, in_Angle);
	vec4 pos = vec4(in_Position.xy * in_Scale, in_Position.z, 1.0) * rotmat + vec4(in_Offset, 0.0);
	gl_Position = gm_Matrices[MATRIX_WORLD_VIEW_PROJECTION] * pos;
	v_vColour = in_Colour;
	v_vTexcoord = in_TextureCoord + vec2(in_Animation, 0.0);
	v_vHsv = in_Hsv;
}