|
1
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
2
|
// Copyright 2018 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.mesh;
|
|
21
|
|
|
22
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
23
|
/**
|
|
24
|
* Create a quad, i.e. two triangles with vertices at (+-0.5,+-0.5).
|
|
25
|
* <p>
|
|
26
|
* Mainly to have a simple example showing how to create a Mesh; otherwise a MeshQuad can be perfectly
|
|
27
|
* emulated by a MeshFlat(1,1) or a MeshCubes(1,1,0).
|
|
28
|
*/
|
|
29
|
public class MeshQuad extends MeshBase
|
|
30
|
{
|
|
31
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
32
|
|
|
33
|
private void addVertex(int vertex, float x, float y, float[] attribs)
|
|
34
|
{
|
|
35
|
attribs[VERT_ATTRIBS*vertex + POS_ATTRIB ] = x-0.5f;
|
|
36
|
attribs[VERT_ATTRIBS*vertex + POS_ATTRIB+1] = 0.5f-y;
|
|
37
|
attribs[VERT_ATTRIBS*vertex + POS_ATTRIB+2] = 0.0f;
|
|
38
|
|
|
39
|
attribs[VERT_ATTRIBS*vertex + NOR_ATTRIB ] = 0.0f;
|
|
40
|
attribs[VERT_ATTRIBS*vertex + NOR_ATTRIB+1] = 0.0f;
|
|
41
|
attribs[VERT_ATTRIBS*vertex + NOR_ATTRIB+2] = 1.0f;
|
|
42
|
|
|
43
|
attribs[VERT_ATTRIBS*vertex + INF_ATTRIB ] = (x-0.5f);
|
|
44
|
attribs[VERT_ATTRIBS*vertex + INF_ATTRIB+1] = (0.5f-y);
|
|
45
|
attribs[VERT_ATTRIBS*vertex + INF_ATTRIB+2] = 0.01f ; // Inflated surface needs to be slightly in front
|
|
46
|
|
|
47
|
attribs[VERT_ATTRIBS*vertex + TEX_ATTRIB ] = x;
|
|
48
|
attribs[VERT_ATTRIBS*vertex + TEX_ATTRIB+1] = 1.0f-y;
|
|
49
|
}
|
|
50
|
|
|
51
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
52
|
// PUBLIC API
|
|
53
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
54
|
/**
|
|
55
|
* Creates the underlying grid of 4 vertices, normals, inflates and texture coords.
|
|
56
|
*/
|
|
57
|
public MeshQuad()
|
|
58
|
{
|
|
59
|
super(0.0f);
|
|
60
|
|
|
61
|
float[] attribs= new float[VERT_ATTRIBS*4];
|
|
62
|
|
|
63
|
addVertex(0, 0.0f,0.0f, attribs);
|
|
64
|
addVertex(1, 0.0f,1.0f, attribs);
|
|
65
|
addVertex(2, 1.0f,0.0f, attribs);
|
|
66
|
addVertex(3, 1.0f,1.0f, attribs);
|
|
67
|
|
|
68
|
setAttribs(attribs);
|
|
69
|
}
|
|
70
|
}
|