caLib_abstract.renderer source code

1 /**
2 * This module defines the notion of a $(RENDERER). A $(RENDERER) is responsible
3 * for "rendering" the $(I ca's) $(LATTICE) in a way that humans can appriciate.
4 * While a $(RENDERER) is not "mathematicly" part of a $(I cellular automaton), it
5 * is here for obvious reasons.
6 *
7 * This module provides templates for testing whether a given object is a $(RENDERER),
8 * and what kind of $(RENDERER) it is.
9 *
10 * $(CALIB_ABSTRACT_DESC)
11 */
12 
13 module caLib_abstract.renderer;
14 
15 /**
16 * Returns `true` if T is a $(B Renderer) defined as having the primitives:
17 * `void render()` $(BR)
18 * `void screendshot(string path)`
19 * `void startRecording(string path)`
20 * `void stopRecording()`
21 *
22 * A $(B Renderer) is the most basic form of a $(RENDERER).
23 */
24 enum isRenderer(T) =
25 	is(typeof(T.init.render()) : void) &&
26 	is(typeof(T.init.screenshot("")) : void) &&
27 	is(typeof(T.init.startRecording("", uint.init)) : void) &&
28 	is(typeof(T.init.stopRecording()) : void);
29 
30 unittest
31 {
32 	static assert( isRenderer!Renderer);
33 	static assert(!isRenderer!string);
34 }
35 
36 
37 
38 /// Example of a $(B Renderer)
39 struct Renderer
40 {
41 	void render() {}
42 
43 	void screenshot(string path) {}
44 	
45 	void startRecording(string path, uint framerate) {}
46 	void stopRecording() {}
47 }
48 
49 ///
50 unittest
51 {
52 	static assert( isRenderer!Renderer);
53 	static assert(!isRenderer!string);
54 }