/src/main/java/org/distorted/library/DistortedSurface.java - Annotate - Distorted Android

library / src / main / java / org / distorted / library / DistortedSurface.java @ c204c69d

1	c5369f1b	leszek	///////////////////////////////////////////////////////////////////////////////////////////////////
2			// Copyright 2016 Leszek Koltunski //
3			// //
4			// This file is part of Distorted. //
5			// //
6			// Distorted is free software: you can redistribute it and/or modify //
7			// it under the terms of the GNU General Public License as published by //
8			// the Free Software Foundation, either version 2 of the License, or //
9			// (at your option) any later version. //
10			// //
11			// Distorted is distributed in the hope that it will be useful, //
12			// but WITHOUT ANY WARRANTY; without even the implied warranty of //
13			// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
14			// GNU General Public License for more details. //
15			// //
16			// You should have received a copy of the GNU General Public License //
17			// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
18			///////////////////////////////////////////////////////////////////////////////////////////////////
19
20			package org.distorted.library;
21
22	af4cc5db	Leszek Koltunski	import java.util.LinkedList;
23
24			///////////////////////////////////////////////////////////////////////////////////////////////////
25			/**
26			* Keep all objects created in a static LinkedList. The point: we need to be able to mark
27			* Objects for deletion, and delete all marked Objects later at a convenient time (that's
28			* because we can only delete from a thread that holds the OpenGL context so here we provide a
29			* framework where one is able to mark for deletion at any time and actual deletion takes place
30			* on the next render).
31			*/
32			abstract class DistortedSurface
33			{
34			static final int FAILED_TO_CREATE = -1;
35			static final int NOT_CREATED_YET = -2;
36			static final int DONT_CREATE = -3;
37
38	f8377ef8	leszek	private static boolean mToDo = false;
39			private static LinkedList<DistortedSurface> mDoneList = new LinkedList<>();
40			private static LinkedList<DistortedSurface> mToDoList = new LinkedList<>();
41	c204c69d	leszek	private static long mNextID = 0;
42	af4cc5db	Leszek Koltunski
43	c204c69d	leszek	private long mID;
44	af4cc5db	Leszek Koltunski	private boolean mMarked;
45			int[] mColorH = new int[1];
46			int mSizeX, mSizeY; // in screen space
47
48			///////////////////////////////////////////////////////////////////////////////////////////////////
49
50	f8377ef8	leszek	abstract void create();
51	af4cc5db	Leszek Koltunski	abstract void delete();
52	f8377ef8	leszek	abstract void recreate();
53	af4cc5db	Leszek Koltunski
54			///////////////////////////////////////////////////////////////////////////////////////////////////
55			// must be called form a thread holding OpenGL Context
56
57	f8377ef8	leszek	static synchronized void toDo()
58	af4cc5db	Leszek Koltunski	{
59	f8377ef8	leszek	if( mToDo )
60	af4cc5db	Leszek Koltunski	{
61	f8377ef8	leszek	DistortedSurface surface;
62	af4cc5db	Leszek Koltunski
63	f8377ef8	leszek	int num = mToDoList.size();
64
65			for(int i=0; i<num; i++)
66	af4cc5db	Leszek Koltunski	{
67	f8377ef8	leszek	surface = mToDoList.removeFirst();
68	af4cc5db	Leszek Koltunski
69	f8377ef8	leszek	if(surface.mMarked)
70			{
71			surface.delete();
72			surface.mMarked = false;
73			}
74			else
75	af4cc5db	Leszek Koltunski	{
76	f8377ef8	leszek	surface.create();
77			mDoneList.add(surface);
78	af4cc5db	Leszek Koltunski	}
79			}
80
81	f8377ef8	leszek	mToDo = false;
82	af4cc5db	Leszek Koltunski	}
83			}
84
85	c5369f1b	leszek	///////////////////////////////////////////////////////////////////////////////////////////////////
86
87	af4cc5db	Leszek Koltunski	static synchronized void onDestroy()
88			{
89	f8377ef8	leszek	DistortedSurface surface;
90
91			int num = mDoneList.size();
92
93			for(int i=0; i<num; i++)
94	af4cc5db	Leszek Koltunski	{
95	f8377ef8	leszek	surface = mDoneList.removeFirst();
96
97			if( !surface.mMarked )
98			{
99			surface.recreate();
100			mToDoList.add(surface);
101			}
102	af4cc5db	Leszek Koltunski	}
103
104	f8377ef8	leszek	mToDo = true;
105	c204c69d	leszek	mNextID = 0;
106	f8377ef8	leszek	}
107
108			///////////////////////////////////////////////////////////////////////////////////////////////////
109
110			synchronized void moveToToDo()
111			{
112			if ( mDoneList.remove(this) )
113			{
114			mToDoList.add(this);
115			mToDo = true;
116			}
117	af4cc5db	Leszek Koltunski	}
118
119			///////////////////////////////////////////////////////////////////////////////////////////////////
120
121			DistortedSurface(int width, int height, int color)
122			{
123			mSizeX = width ;
124			mSizeY = height;
125			mColorH[0]= color;
126			mMarked = false;
127	c204c69d	leszek	mID = mNextID++;
128	f8377ef8	leszek
129			if( color!=DONT_CREATE )
130			{
131			mToDoList.add(this);
132			mToDo = true;
133			}
134	af4cc5db	Leszek Koltunski	}
135
136			///////////////////////////////////////////////////////////////////////////////////////////////////
137			// PUBLIC API
138			///////////////////////////////////////////////////////////////////////////////////////////////////
139	c5369f1b	leszek	/**
140	af4cc5db	Leszek Koltunski	* Mark the underlying OpenGL object for deletion. Actual deletion will take place on the next render.
141	c5369f1b	leszek	*/
142	af4cc5db	Leszek Koltunski	public void markForDeletion()
143			{
144	f8377ef8	leszek	if( !mMarked )
145			{
146			mToDo = true;
147			mMarked = true;
148			mDoneList.remove(this);
149			mToDoList.add(this);
150			}
151	af4cc5db	Leszek Koltunski	}
152	c5369f1b	leszek
153	af4cc5db	Leszek Koltunski	////////////////////////////////////////////////////////////////////////////////////////////////////
154	c5369f1b	leszek	/**
155	af4cc5db	Leszek Koltunski	* Return unique ID of the Surface.
156	c5369f1b	leszek	*/
157	af4cc5db	Leszek Koltunski	public long getID()
158			{
159	c204c69d	leszek	return mID;
160	af4cc5db	Leszek Koltunski	}
161
162			///////////////////////////////////////////////////////////////////////////////////////////////////
163
164	c5369f1b	leszek	/**
165	af4cc5db	Leszek Koltunski	* Returns the height of the Surface.
166			*
167			* @return height of the object, in pixels.
168	c5369f1b	leszek	*/
169	af4cc5db	Leszek Koltunski	public int getWidth()
170			{
171			return mSizeX;
172			}
173
174			///////////////////////////////////////////////////////////////////////////////////////////////////
175	c5369f1b	leszek	/**
176	af4cc5db	Leszek Koltunski	* Returns the width of the Surface.
177			*
178			* @return width of the Object, in pixels.
179	c5369f1b	leszek	*/
180	af4cc5db	Leszek Koltunski	public int getHeight()
181			{
182			return mSizeY;
183			}
184
185			///////////////////////////////////////////////////////////////////////////////////////////////////
186	c5369f1b	leszek	/**
187	af4cc5db	Leszek Koltunski	* Returns the depth of the Surface.
188			* <p>
189			* Admittedly quite a strange method. Why do we need to pass a Mesh to it? Because one cannot determine
190			* 'depth' of a Surface (bitmap really!) when rendered based only on the texture itself, that depends
191			* on the Mesh it is rendered with.
192			*
193			* @return depth of the Object, in pixels.
194	c5369f1b	leszek	*/
195	af4cc5db	Leszek Koltunski	public int getDepth(MeshObject mesh)
196			{
197			return mesh==null ? 0 : (int)(mSizeX*mesh.zFactor);
198			}
199			}

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library / src / main / java / org / distorted / library / DistortedSurface.java @ c204c69d