sliceextractor.frag 2.89 KB
Newer Older
1
2
// ================================================================================================
// 
schultezub's avatar
schultezub committed
3
// This file is part of the CAMPVis Software Framework.
4
5
// 
// If not explicitly stated otherwise: Copyright (C) 2012, all rights reserved,
schultezub's avatar
schultezub committed
6
//      Christian Schulte zu Berge <christian.szb@in.tum.de>
7
8
9
//      Chair for Computer Aided Medical Procedures
//      Technische Universität München
//      Boltzmannstr. 3, 85748 Garching b. München, Germany
schultezub's avatar
schultezub committed
10
// For a full list of authors and contributors, please refer to the file "AUTHORS.txt".
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
// 
// The licensing of this softare is not yet resolved. Until then, redistribution in source or
// binary forms outside the CAMP chair is not permitted, unless explicitly stated in legal form.
// However, the names of the original authors and the above copyright notice must retain in its
// original state in any case.
// 
// Legal disclaimer provided by the BSD license:
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 
// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
// 
// ================================================================================================

30
in vec3 ex_TexCoord;
31
32
out vec4 out_Color;

33
//#include "tools/background.frag"
34
#include "tools/texture3d.frag"
35
#include "tools/transferfunction.frag"
schultezub's avatar
schultezub committed
36

37
38
uniform sampler3D _texture;
uniform TextureParameters3D _textureParams;
39
40
41

uniform sampler1D _transferFunction;
uniform TFParameters1D _transferFunctionParams;
42

43
44
uniform mat4 _texCoordsMatrix;

45
46
47
uniform bool _useTexturing;
uniform vec4 _color;

schultezub's avatar
schultezub committed
48
void main() {
49
    if (_useTexturing) {
50
        vec4 texel = texture(_texture, (_texCoordsMatrix * vec4(ex_TexCoord, 1.0)).xyz);
51

52
        if (_textureParams._numChannels == 1) {
53
            out_Color = lookupTF(_transferFunction, _transferFunctionParams, texel.r);
54
55
56
57
58
59
60
        }
        else if (_textureParams._numChannels == 3) {
            out_Color = vec4(abs(texel.rgb), 1.0);
        }
        else if (_textureParams._numChannels == 4) {
            out_Color = (abs(texel) - vec4(_transferFunctionParams._intensityDomain.x)) / (_transferFunctionParams._intensityDomain.y - _transferFunctionParams._intensityDomain.x);
        }
61
    }
62
63
64
    else {
        out_Color = _color;
    }    
schultezub's avatar
schultezub committed
65
}