layout(location = ATTRIBUTE_LOCATION_POSITION) in vec3 a_Position;
layout(location = ATTRIBUTE_LOCATION_POSITION_64LOW) in vec2 a_Position64Low;
layout(location = ATTRIBUTE_LOCATION_COLOR) in vec4 a_Color;
layout(location = ATTRIBUTE_LOCATION_SIZE) in float a_Size;
layout(location = ATTRIBUTE_LOCATION_SHAPE) in float a_Shape;
layout(location = ATTRIBUTE_LOCATION_EXTRUDE) in vec3 a_Extrude;

layout(std140) uniform commonUniforms {
  vec3 u_blur_height_fixed;
  float u_stroke_width;
  float u_additive;
  float u_stroke_opacity;
  float u_size_unit;
  float u_time;
  vec4 u_animate;
};

out vec4 v_color;
out vec4 v_stroke;
out vec4 v_data;
out float v_radius;

#pragma include "projection"
#pragma include "picking"
#pragma include "rotation_2d"

void main() {
  // 透明度计算
   v_stroke = stroke;
  vec3 extrude = a_Extrude;
  float shape_type = a_Shape;
  /*
  *  setPickingSize 设置拾取大小
  *  u_meter2coord 在等面积大小的时候设置单位
  */
  float newSize = setPickingSize(a_Size);
  // float newSize = setPickingSize(a_Size) * 0.00001038445708445579;



  // unpack color(vec2)
  v_color = vec4(a_Color.xyz, a_Color.w * opacity);

  if(u_size_unit == 1.0) {
    newSize = newSize  * u_PixelsPerMeter.z;
  }

   v_radius = newSize;

  // anti-alias
  //  float antialiased_blur = -max(u_blur, antialiasblur);
  float antialiasblur = -max(2.0 / u_DevicePixelRatio / newSize, u_blur_height_fixed.x);

  vec2 offset = (extrude.xy * (newSize + u_stroke_width) + u_offsets);

  offset = project_pixel(offset);
  offset = rotate_matrix(offset,rotation);

  // TODP: /abs(extrude.x) 是为了兼容地球模式
  v_data = vec4(extrude.x/abs(extrude.x), extrude.y/abs(extrude.y), antialiasblur,shape_type);

  vec4 project_pos = project_position(vec4(a_Position.xy, 0.0, 1.0), a_Position64Low);
  // gl_Position = project_common_position_to_clipspace(vec4(project_pos.xy + offset, project_pixel(setPickingOrder(0.0)), 1.0));

  float raisingHeight = u_blur_height_fixed.y;

  if(u_blur_height_fixed.z < 1.0) { // false
    raisingHeight = project_pixel(u_blur_height_fixed.y);
  } else {
     if(u_CoordinateSystem == COORDINATE_SYSTEM_LNGLAT || u_CoordinateSystem == COORDINATE_SYSTEM_LNGLAT_OFFSET) {
      float mapboxZoomScale = 4.0/pow(2.0, 21.0 - u_Zoom);
      raisingHeight = u_blur_height_fixed.y * mapboxZoomScale;
    }
  }

  gl_Position = project_common_position_to_clipspace(vec4(project_pos.xy + offset, raisingHeight, 1.0));

  setPickingColor(a_PickingColor);
}