volmetrics
changeset 6:e6485ef45e6e
visualize volume
| author | Eleni Maria Stea <elene.mst@gmail.com> |
|---|---|
| date | Sat, 18 Jan 2014 01:57:52 +0200 |
| parents | 92c163c939be |
| children | 5455c9723d9e |
| files | data/test1.vol src/main.cc src/volume.cc src/volume.h |
| diffstat | 4 files changed, 356 insertions(+), 21 deletions(-) [+] |
line diff
1.1 --- a/data/test1.vol Fri Jan 17 23:45:56 2014 +0200 1.2 +++ b/data/test1.vol Sat Jan 18 01:57:52 2014 +0200 1.3 @@ -3,6 +3,7 @@ 1.4 1.5 SLICES 1.6 /home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0001.png 1.7 +/home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0002.png 1.8 /home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0003.png 1.9 /home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0004.png 1.10 /home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0005.png 1.11 @@ -17,3 +18,243 @@ 1.12 /home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0014.png 1.13 /home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0015.png 1.14 /home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0016.png 1.15 +/home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0017.png 1.16 +/home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0018.png 1.17 +/home/eleni/code/med/test1/data/la_colonoscopie/IM-0001-0019.png 1.18 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2.1 --- a/src/main.cc Fri Jan 17 23:45:56 2014 +0200 2.2 +++ b/src/main.cc Sat Jan 18 01:57:52 2014 +0200 2.3 @@ -4,7 +4,7 @@ 2.4 #include <stdio.h> 2.5 #include <assert.h> 2.6 2.7 -#include "image.h" 2.8 +#include "volume.h" 2.9 2.10 //static void init(void); 2.11 static void display(void); 2.12 @@ -19,8 +19,9 @@ 2.13 // debug TODO remove 2.14 //////////////////////////// 2.15 static bool init(); 2.16 -Image img; 2.17 -unsigned int tex; 2.18 + 2.19 +static Volume *vol; 2.20 +static float cur_z; 2.21 2.22 int main(int argc, char **argv) 2.23 { 2.24 @@ -53,15 +54,15 @@ 2.25 void display(void) 2.26 { 2.27 //render 2.28 - glBindTexture(GL_TEXTURE_2D, tex); 2.29 - glEnable(GL_TEXTURE_2D); 2.30 + glBindTexture(GL_TEXTURE_3D, vol->get_texture()); 2.31 + glEnable(GL_TEXTURE_3D); 2.32 glBegin(GL_QUADS); 2.33 - glTexCoord2f(0, 0); glVertex3f(-1, -1, 0); 2.34 - glTexCoord2f(0, 1); glVertex3f(-1, 1, 0); 2.35 - glTexCoord2f(1, 1); glVertex3f(1, 1, 0); 2.36 - glTexCoord2f(1, 0); glVertex3f(1, -1, 0); 2.37 + glTexCoord3f(0, 0, cur_z); glVertex3f(-1, -1, 0); 2.38 + glTexCoord3f(0, 1, cur_z); glVertex3f(-1, 1, 0); 2.39 + glTexCoord3f(1, 1, cur_z); glVertex3f(1, 1, 0); 2.40 + glTexCoord3f(1, 0, cur_z); glVertex3f(1, -1, 0); 2.41 glEnd(); 2.42 - glDisable(GL_TEXTURE_2D); 2.43 + glDisable(GL_TEXTURE_3D); 2.44 2.45 glutSwapBuffers(); 2.46 assert(glGetError() == GL_NO_ERROR); 2.47 @@ -100,21 +101,21 @@ 2.48 int dy = y - prev_y; 2.49 prev_x = x; 2.50 prev_y = y; 2.51 + 2.52 + if(dx != 0) { 2.53 + cur_z = (float)x / (float)win_xsz; 2.54 + glutPostRedisplay(); 2.55 + } 2.56 } 2.57 2.58 bool init() 2.59 { 2.60 - if(!img.load("data/la_colonoscopie/IM-0001-0248.png")) { 2.61 - fprintf(stderr, "Failed to load votre Colonoscopie\n"); 2.62 + vol = new Volume; 2.63 + if(!vol->load("data/test1.vol")) { 2.64 + fprintf(stderr, "Failed to load test1.vol"); 2.65 return false; 2.66 } 2.67 - 2.68 - glGenTextures(1, &tex); 2.69 - glBindTexture(GL_TEXTURE_2D, tex); 2.70 - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 2.71 - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 2.72 - glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE16F_ARB, img.get_width(), 2.73 - img.get_height(), 0, GL_LUMINANCE, GL_FLOAT, img.get_pixels()); 2.74 + cur_z = 0.5; 2.75 2.76 return true; 2.77 }
3.1 --- a/src/volume.cc Fri Jan 17 23:45:56 2014 +0200 3.2 +++ b/src/volume.cc Sat Jan 18 01:57:52 2014 +0200 3.3 @@ -1,3 +1,7 @@ 3.4 +#include <GL/glew.h> 3.5 + 3.6 +#include <assert.h> 3.7 + 3.8 #include <ctype.h> 3.9 #include <errno.h> 3.10 #include <stdio.h> 3.11 @@ -14,9 +18,40 @@ 3.12 { 3.13 width = height = 0; 3.14 zaspect = 1; 3.15 + vol_tex_valid = false; 3.16 + 3.17 + glGenTextures(1, &vol_tex); 3.18 } 3.19 3.20 -bool Volume::load_volume(const char *fname) 3.21 +Volume::~Volume() 3.22 +{ 3.23 + glDeleteTextures(1, &vol_tex); 3.24 +} 3.25 + 3.26 +void Volume::create_vol_tex() const 3.27 +{ 3.28 + if(slices.empty()) 3.29 + return; 3.30 + 3.31 + glBindTexture(GL_TEXTURE_3D, vol_tex); 3.32 + glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 3.33 + glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 3.34 + glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 3.35 + glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 3.36 + glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); 3.37 + 3.38 + assert(glGetError() == GL_NO_ERROR); 3.39 + glTexImage3D(GL_TEXTURE_3D, 0, GL_LUMINANCE, width, height, 3.40 + slices.size(), 0, GL_LUMINANCE, GL_FLOAT, 0); 3.41 + assert(glGetError() == GL_NO_ERROR); 3.42 + 3.43 + for(size_t i=0; i<slices.size(); i++) { 3.44 + glTexSubImage3D(GL_TEXTURE_3D, 0, 0, 0, i, width, height, 3.45 + 1, GL_LUMINANCE, GL_FLOAT, slices[i].get_pixels()); 3.46 + } 3.47 +} 3.48 + 3.49 +bool Volume::load(const char *fname) 3.50 { 3.51 FILE *fp = fopen(fname, "r"); 3.52 if(!fp) { 3.53 @@ -85,6 +120,49 @@ 3.54 return true; 3.55 } 3.56 3.57 +const Image *Volume::get_slice(int num_slice) const 3.58 +{ 3.59 + if(num_slice >= (int)slices.size() || num_slice < 0) 3.60 + return 0; 3.61 + 3.62 + return &slices[num_slice]; 3.63 +} 3.64 + 3.65 +const Image *Volume::get_slice_by_z(float z) const 3.66 +{ 3.67 + int idx = get_slice_idx_by_z(z); 3.68 + return get_slice(idx); 3.69 +} 3.70 + 3.71 +int Volume::get_slice_count() const 3.72 +{ 3.73 + return (int)slices.size(); 3.74 +} 3.75 + 3.76 +int Volume::get_slice_idx_by_z(float z) const 3.77 +{ 3.78 + int last_slice_idx = (int)slices.size() - 1; 3.79 + int idx = z * last_slice_idx; 3.80 + if(idx < 0) { 3.81 + idx = 0; 3.82 + } 3.83 + else if(idx > last_slice_idx) { 3.84 + idx = last_slice_idx; 3.85 + } 3.86 + 3.87 + return idx; 3.88 +} 3.89 + 3.90 +unsigned int Volume::get_texture() const 3.91 +{ 3.92 + if(!vol_tex_valid) { 3.93 + create_vol_tex(); 3.94 + vol_tex_valid = true; 3.95 + } 3.96 + 3.97 + return vol_tex; 3.98 +} 3.99 + 3.100 void Volume::draw() 3.101 { 3.102 }
4.1 --- a/src/volume.h Fri Jan 17 23:45:56 2014 +0200 4.2 +++ b/src/volume.h Sat Jan 18 01:57:52 2014 +0200 4.3 @@ -7,15 +7,30 @@ 4.4 class Volume { 4.5 private: 4.6 std::vector<Image> slices; 4.7 + 4.8 int width; 4.9 int height; 4.10 float zaspect; 4.11 4.12 + unsigned int vol_tex; 4.13 + mutable bool vol_tex_valid; 4.14 + 4.15 + void create_vol_tex() const; 4.16 + 4.17 public: 4.18 Volume(); 4.19 + ~Volume(); 4.20 4.21 - bool load_volume(const char *fname); 4.22 + bool load(const char *fname); 4.23 + 4.24 bool push_slice(Image &&slice); 4.25 + const Image *get_slice(int num_slice) const; 4.26 + const Image *get_slice_by_z(float z) const; 4.27 + int get_slice_count() const; 4.28 + 4.29 + int get_slice_idx_by_z(float z) const; 4.30 + 4.31 + unsigned int get_texture() const; 4.32 4.33 void draw(); 4.34 };