openGL_test.pyの更新版。ポーズモードに対応。

markingVertices02.py

import bpy
import bgl    # OpenGLをBlender内部から利用するために必要
from bpy_extras import view3d_utils


bl_info = {
    "name": "Tutorial: OpenGL on Blender",
    "author": "12funkeys",
    "version": (1, 0),
    "blender": (2, 74, 0),
    "location": "View3D > Tutorial: OpenGL on Blender",
    "description": "Tutorial: Use Blender's OpenGL API.",
    "warning": "",
    "support": "COMMUNITY",
    "wiki_url": "",
    "tracker_url": "",
    "category": "3D View"
}


class RectRenderer(bpy.types.Operator):
    """四角形を描画する"""

    bl_idname = "view3d.rect_renderer"
    bl_label = "Rect renderer"

    __handle = None    # 描画関数

    # 「View3D」領域の描画関数を登録
    @staticmethod
    def handle_add():
        RectRenderer.__handle = bpy.types.SpaceView3D.draw_handler_add(
            RectRenderer.render_rect,
            (), 'WINDOW', 'POST_PIXEL')

    # 「View3D」領域の描画関数を登録解除
    @staticmethod
    def handle_remove():
        if RectRenderer.__handle is not None:
            bpy.types.SpaceView3D.draw_handler_remove(
                RectRenderer.__handle, 'WINDOW')
            RectRenderer.__handle = None

    # 「View3D」領域の描画関数本体
    @staticmethod
    def render_rect():

        C = bpy.context
        oa = bpy.context.active_object

        for area in bpy.context.screen.areas:
            if area.type == 'VIEW_3D':
                viewport = area.regions[4]

                me = oa.to_mesh(scene=C.scene, apply_modifiers=True, settings='PREVIEW')
                me.transform(oa.matrix_world)
                print(me.vertices[0].co, " - Vert 0 (deformed/modified)")

                for v in me.vertices :
                    
                    #coo in 3d space
                    co_3d = v.co
                    #coo in the 3d view area (2d)
                    co_2d = view3d_utils.location_3d_to_region_2d(viewport, area.spaces[0].region_3d, co_3d)
                    #coo in the blender window
                    #co_2d_w = (co_2d[0]+viewport.x, co_2d[1]+viewport.y)
                    #coo in the system screen
                    #co_2d_s = (co_2d_w[0]+bpy.context.window.x, co_2d_w[1]+bpy.context.window.y)
                    #display
                    #print("\n\n3d space co :",co_3d,"\n2d in viewport co :",co_2d)              
                    #print("2d in window co :",co_2d_w,"\n2d system co :",co_2d_s)

                    # 描画領域の作成
                    
                    cx = co_2d[0]
                    cy = co_2d[1]

                    ms = 3.0 #markingsize 
                    
                    positions = [
                        [cx-ms/2, cy-ms/2],     # 左下
                        [cx-ms/2, cy+ms/2],    # 左上
                        [cx+ms/2, cy+ms/2],   # 右上
                        [cx+ms/2, cy-ms/2]     # 右下
                        ]

                    # OpenGLによる四角形の描画
                    bgl.glEnable(bgl.GL_BLEND)    # アルファブレンドの有効化
                    bgl.glBegin(bgl.GL_QUADS)    # 四角形の描画を開始
                    bgl.glColor4f(0.7, 0.5, 0.3, 0.6)    # 描画する四角形の色を指定
                    for (v1, v2) in positions:
                        bgl.glVertex2f(v1, v2)    # 頂点の登録
                    bgl.glEnd()    # 四角形の描画を終了

                bpy.data.meshes.remove(me)



# スクリプトインストール時の処理
def register():
    bpy.utils.register_module(__name__)
    RectRenderer.handle_add()


# スクリプトアンインストール時の処理
def unregister():
    bpy.utils.unregister_module(__name__)
    RectRenderer.handle_remove()


if __name__ == "__main__":
    register()