glviewvol
annotate src/renderer.cc @ 5:5417c25cb238
moving to a simpler transfer function
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Mon, 29 Dec 2014 15:59:55 +0200 |
| parents | 04330eb80b36 |
| children | f22be47a3572 |
| rev | line source |
|---|---|
| nuclear@4 | 1 #include <math.h> |
| nuclear@0 | 2 #include "renderer.h" |
| nuclear@0 | 3 |
| nuclear@0 | 4 Renderer::Renderer() |
| nuclear@0 | 5 { |
| nuclear@0 | 6 vol = 0; |
| nuclear@0 | 7 view_width = 512; |
| nuclear@0 | 8 view_height = 512; |
| nuclear@4 | 9 |
| nuclear@4 | 10 for(int i=0; i<3; i++) { |
| nuclear@4 | 11 xfer[i].set_point(0, 0); |
| nuclear@4 | 12 xfer[i].set_point(1, 1); |
| nuclear@4 | 13 } |
| nuclear@4 | 14 |
| nuclear@5 | 15 xfer_low = 0.0; |
| nuclear@5 | 16 xfer_high = 1.0; |
| nuclear@5 | 17 |
| nuclear@4 | 18 for(int i=0; i<MAX_CLIP_PLANES; i++) { |
| nuclear@4 | 19 disable_clipping_plane(i); |
| nuclear@4 | 20 } |
| nuclear@0 | 21 } |
| nuclear@0 | 22 |
| nuclear@0 | 23 Renderer::~Renderer() |
| nuclear@0 | 24 { |
| nuclear@0 | 25 destroy(); |
| nuclear@0 | 26 } |
| nuclear@0 | 27 |
| nuclear@0 | 28 bool Renderer::init() |
| nuclear@0 | 29 { |
| nuclear@0 | 30 return true; |
| nuclear@0 | 31 } |
| nuclear@0 | 32 |
| nuclear@0 | 33 void Renderer::destroy() |
| nuclear@0 | 34 { |
| nuclear@0 | 35 } |
| nuclear@0 | 36 |
| nuclear@0 | 37 void Renderer::set_volume(Volume *vol) |
| nuclear@0 | 38 { |
| nuclear@0 | 39 this->vol = vol; |
| nuclear@0 | 40 } |
| nuclear@0 | 41 |
| nuclear@0 | 42 Volume *Renderer::get_volume() const |
| nuclear@0 | 43 { |
| nuclear@0 | 44 return vol; |
| nuclear@0 | 45 } |
| nuclear@0 | 46 |
| nuclear@4 | 47 Curve &Renderer::transfer_curve(int color) |
| nuclear@4 | 48 { |
| nuclear@4 | 49 return xfer[color]; |
| nuclear@4 | 50 } |
| nuclear@4 | 51 |
| nuclear@4 | 52 const Curve &Renderer::transfer_curve(int color) const |
| nuclear@4 | 53 { |
| nuclear@4 | 54 return xfer[color]; |
| nuclear@4 | 55 } |
| nuclear@4 | 56 |
| nuclear@5 | 57 void Renderer::set_simple_transfer(float low, float high) |
| nuclear@5 | 58 { |
| nuclear@5 | 59 xfer_low = std::min(low, high); |
| nuclear@5 | 60 xfer_high = std::max(low, high); |
| nuclear@5 | 61 } |
| nuclear@5 | 62 |
| nuclear@5 | 63 void Renderer::get_simple_transfer(float *low, float *high) const |
| nuclear@5 | 64 { |
| nuclear@5 | 65 *low = xfer_low; |
| nuclear@5 | 66 *high = xfer_high; |
| nuclear@5 | 67 } |
| nuclear@5 | 68 |
| nuclear@4 | 69 void Renderer::set_clipping_plane(int idx, float nx, float ny, float nz, float dist) |
| nuclear@4 | 70 { |
| nuclear@4 | 71 float len = sqrt(nx * nx + ny * ny + nz * nz); |
| nuclear@4 | 72 if(len != 0.0) { |
| nuclear@4 | 73 nx /= len; |
| nuclear@4 | 74 ny /= len; |
| nuclear@4 | 75 nz /= len; |
| nuclear@4 | 76 } |
| nuclear@4 | 77 clip_plane[idx][0] = nx; |
| nuclear@4 | 78 clip_plane[idx][1] = ny; |
| nuclear@4 | 79 clip_plane[idx][2] = nz; |
| nuclear@4 | 80 clip_plane[idx][3] = dist; |
| nuclear@4 | 81 } |
| nuclear@4 | 82 |
| nuclear@4 | 83 void Renderer::disable_clipping_plane(int idx) |
| nuclear@4 | 84 { |
| nuclear@4 | 85 clip_plane[idx][0] = clip_plane[idx][2] = 0; |
| nuclear@4 | 86 clip_plane[idx][1] = 1; |
| nuclear@4 | 87 clip_plane[idx][3] = -1; |
| nuclear@4 | 88 } |
| nuclear@4 | 89 |
| nuclear@0 | 90 void Renderer::reshape(int x, int y) |
| nuclear@0 | 91 { |
| nuclear@0 | 92 view_width = x; |
| nuclear@0 | 93 view_height = y; |
| nuclear@0 | 94 } |
| nuclear@0 | 95 |
| nuclear@0 | 96 void Renderer::update(unsigned int msec) |
| nuclear@0 | 97 { |
| nuclear@0 | 98 } |