Question

我正在开发插件以加载多个boject来建模和执行多个转换我工作差不多一个星期我通过sketchucation，sketchup ruby文档，转换矩阵主题等，我无法弄清楚我做错了什么。我100％肯定scalling和翻译工作，但我不知道旋转是什么，basiaclly我想围绕轴旋转给定对象。我真的很感激任何一种专业的红宝石插件制造商帮助！我的目标是实现这样的组件：

但我目前的结果是：

我的代码在这里，我知道它不是最短的：

#1)Scale
    scale_transformation = Geom::Transformation.scaling(@transform.scale_vector[0], 
                                                        @transform.scale_vector[1], 
                                                        @transform.scale_vector[2])                                                                                                                                            
    #2)Rotate 
    vector = Geom::Vector3d.new(1, 0, 0)#x axis
    rotate_transformation_x = Geom::Transformation.rotation(@transform.transformation.origin, vector, @transform.rotation_vector[0].degrees)#degrees->radians
    vector = Geom::Vector3d.new(0, 1, 0)#y axis
    rotate_transformation_y = Geom::Transformation.rotation(@transform.transformation.origin, vector, @transform.rotation_vector[1].degrees)#degrees->radians
    vector = Geom::Vector3d.new(0, 0, 1)#z axis
    rotate_transformation_z = Geom::Transformation.rotation(@transform.transformation.origin, vector, @transform.rotation_vector[2].degrees)#degrees->radians

    #if rotate is [0, 0, 0] than rotate transformation is identity matrix:
    if(@transform.rotation_vector[0] == 0 )
        rotate_transformation_x = Geom::Transformation.new()
    end
    if(@transform.rotation_vector[1] == 0 )
        rotate_transformation_y = Geom::Transformation.new()
    end
    if(@transform.rotation_vector[2] == 0 ) 
        rotate_transformation_z = Geom::Transformation.new()
    end
    rotate_transformation = rotate_transformation_x * rotate_transformation_y * rotate_transformation_z

    #3)Translate        
    translate_transformation = Geom::Transformation.translation(Geom::Vector3d.new(
                                                                            meters_to_inches(@transform.translation_vector[0]),
                                                                            meters_to_inches(@transform.translation_vector[1]),
                                                                            meters_to_inches(@transform.translation_vector[2])
                                                                            ))
    #if translate is [0, 0, 0] than translate transformation is identity matrix:
    if(@transform.translation_vector[0] == 0 && @transform.translation_vector[1] == 0 && @transform.translation_vector[2] == 0 )
        translate_transformation = Geom::Transformation.new()
    end
    #using overloaded operator '*' for matrixes

    puts @path + "\r\nFROM PARENT : " + @transform.to_s + ", matrix = " + @transform.transformation.to_a.each_slice(4).inject { |str, row| "#{str}\r\n#{row}" }
    @transform.transformation = (translate_transformation * rotate_transformation * scale_transformation) * @transform.transformation

@ transform.transformation如果没有先前的转换是单位矩阵。我认为我的错误可以与乘法矩阵的顺序联系起来感谢您提供任何帮助!!!

旋转和翻译定义如下（例如）：

Sketchup红宝石平移，旋转，缩放

0 个答案: