Morph在Morphic和NSView在Cocoa之间的区别是什么？ [英] What is the difference between a Morph in Morphic and a NSView in Cocoa?

问题描述

我想知道使Morphic特别的东西。

I'd like to know about the things that make Morphic special.

推荐答案

Morphic比NSView其他图形类，只需允许重新实现有限的功能集。 Morphic是一个极具延展性的UI构建工具包。 Morphic背后的一些设计理念使这个意图清楚：

Morphic is much more than NSView or any other graphics class that simply allow the re-implementation of a limited set of features. Morphic is an extremely malleable UI construction kit. Some design ideas behind Morphic makes this intention clear:

• 包括2D坐标系统的综合层次。它们不限于笛卡尔或线性。有用的非线性坐标系包括极坐标，对数坐标，双曲线和地理（映射）投影。


• 坐标系统与变形本身的处理分离。变形应该只需要选择其首选坐标系，而不需要将其绘制的每个点转换为世界坐标本身。 #drawOn：方法和其子变形的位置在其自己的坐标系中表示。


• 完全独立于显示属性例如尺寸或分辨率。没有像素的概念。 GUI被认为在更高的层次。所有的GUI是独立的像素分辨率。所有渲染均为消除锯齿。


• 分隔坐标系统简化了变形的移动，缩放和旋转。


• 所有坐标都是浮点数。这对于允许完全任意的缩放而没有明显的舍入误差是有好处的。


• Morph层次结构不是形状的层次结构。变形没有边框或颜色的概念。没有一般的亚基准则的概念。


• 变形事件处理是灵活的，允许您将事件发送到任意对象。该对象不需要子类化Morph。

• A comprehensive hierarchy of 2D coordinate systems is included. They are not restricted to Cartesian or linear. Useful nonlinear coordinate systems include polar, logarithmic,hyperbolic and geographic (map like) projections.
• Separation of the handling of coordinate systems from the morphs themselves. A morph should only need to select its preferred coordinate system, instead of needing to convert every point it draws to World coordinates by itself. Its #drawOn: method and the location of its sub-morphs are expressed in its own coordinate system.
• Complete independency of Display properties such as size or resolution. There is no concept of pixel. The GUI is thought at a higher level. All the GUI is independent of pixel resolution. All the rendering is anti aliased.
• Separating the coordinate system eases the moving, zooming and rotation of morphs.
• All coordinates are Float numbers. This is good for allowing completely arbitrary scales without significant rounding errors.
• The Morph hierarchy is not a hierarchy of shapes. Morphs don't have a concept of a border or color. There is no general concept of submorph aligning. A particular morph may implement these in any way that makes sense for itself.
• Morphic event handling is flexible and allows you to send events to arbitrary objects. That object need not subclass Morph.

这篇关于Morph在Morphic和NSView在Cocoa之间的区别是什么？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！