volmetrics
annotate src/mesh.cc @ 18:4e02e18e70ef
quick backup - shaders 4 transfer function preview
| author | Eleni Maria Stea <elene.mst@gmail.com> |
|---|---|
| date | Mon, 24 Mar 2014 23:28:08 +0200 |
| parents | 928954bfefd7 |
| children | df4a277adb82 |
| rev | line source |
|---|---|
| elene@8 | 1 #include <GL/gl.h> |
| elene@8 | 2 #include "mesh.h" |
| elene@8 | 3 |
| elene@8 | 4 Mesh::Mesh() |
| elene@8 | 5 { |
| elene@8 | 6 } |
| elene@8 | 7 |
| elene@8 | 8 void Mesh::add_vertex(const Vector3 &vertex) |
| elene@8 | 9 { |
| elene@8 | 10 vertices.push_back(vertex); |
| elene@8 | 11 } |
| elene@8 | 12 |
| elene@8 | 13 void Mesh::add_normal(const Vector3 &normal) |
| elene@8 | 14 { |
| elene@8 | 15 normals.push_back(normal); |
| elene@8 | 16 } |
| elene@8 | 17 |
| elene@8 | 18 void Mesh::clear() |
| elene@8 | 19 { |
| elene@8 | 20 vertices.clear(); |
| elene@8 | 21 normals.clear(); |
| elene@8 | 22 } |
| elene@8 | 23 |
| elene@9 | 24 bool Mesh::is_empty() const |
| elene@9 | 25 { |
| elene@9 | 26 return vertices.empty(); |
| elene@9 | 27 } |
| elene@9 | 28 |
| elene@8 | 29 void Mesh::draw() const |
| elene@8 | 30 { |
| elene@8 | 31 size_t sz = vertices.size(); |
| elene@8 | 32 |
| elene@8 | 33 if(normals.size() != sz) |
| elene@8 | 34 return; |
| elene@8 | 35 |
| elene@8 | 36 glBegin(GL_TRIANGLES); |
| elene@8 | 37 for(size_t i=0; i<sz; i++) { |
| elene@8 | 38 const Vector3 &n = normals[i]; |
| elene@8 | 39 glNormal3f(n.x, n.y, n.z); |
| elene@8 | 40 |
| elene@8 | 41 const Vector3 &v = vertices[i]; |
| elene@8 | 42 glVertex3f(v.x, v.y, v.z); |
| elene@8 | 43 } |
| elene@8 | 44 glEnd(); |
| elene@8 | 45 } |