attribute vec2 aVertexPosition;
attribute vec2 aTextureCoord;
attribute vec4 aColor;

attribute vec2 aPositionCoord;
attribute float aRotation;

uniform mat3 translationMatrix;
uniform vec4 uColor;

varying vec2 vTextureCoord;
varying vec4 vColor;

void main(void){
    float x = (aVertexPosition.x) * cos(aRotation) - (aVertexPosition.y) * sin(aRotation);
    float y = (aVertexPosition.x) * sin(aRotation) + (aVertexPosition.y) * cos(aRotation);

    vec2 v = vec2(x, y);
    v = v + aPositionCoord;

    gl_Position = vec4((translationMatrix * vec3(v, 1.0)).xy, 0.0, 1.0);

    vTextureCoord = aTextureCoord;
    vColor = aColor * uColor;
}