bloboland

annotate src/renderer.cc @ 1:cfe68befb7cc

find changesets by author, revision, files, or words in the commit message
some progress
author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 15 Dec 2012 23:43:03 +0200
parents
children a39c301cdcce
rev   line source
nuclear@1 1 #include "opengl.h"
nuclear@1 2 #include "renderer.h"
nuclear@1 3
nuclear@1 4 Renderer::Renderer()
nuclear@1 5 {
nuclear@1 6 leveltex = 0;
nuclear@1 7 sdrprog = 0;
nuclear@1 8 }
nuclear@1 9
nuclear@1 10 Renderer::~Renderer()
nuclear@1 11 {
nuclear@1 12 shutdown();
nuclear@1 13 }
nuclear@1 14
nuclear@1 15 bool Renderer::init()
nuclear@1 16 {
nuclear@1 17 sdrprog = new SdrProg;
nuclear@1 18 /*if(!sdrprog->load("sdr/bloboray.v.glsl", "sdr/bloboray.p.glsl")) {
nuclear@1 19 return false;
nuclear@1 20 }*/
nuclear@1 21
nuclear@1 22 leveltex = new Texture3D;
nuclear@1 23
nuclear@1 24 return true;
nuclear@1 25 }
nuclear@1 26
nuclear@1 27 void Renderer::shutdown()
nuclear@1 28 {
nuclear@1 29 delete leveltex;
nuclear@1 30 delete sdrprog;
nuclear@1 31 }
nuclear@1 32
nuclear@1 33 static void draw_cube(const Vector3 &pos, float sz);
nuclear@1 34
nuclear@1 35 void Renderer::render(const Level *lvl) const
nuclear@1 36 {
nuclear@1 37 Volume *vol = lvl->terrain;
nuclear@1 38
nuclear@1 39 glEnable(GL_COLOR_MATERIAL);
nuclear@1 40 glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
nuclear@1 41
nuclear@1 42 glBegin(GL_QUADS);
nuclear@1 43 for(int i=0; i<vol->get_size(0); i++) {
nuclear@1 44 for(int j=0; j<vol->get_size(1); j++) {
nuclear@1 45 for(int k=0; k<vol->get_size(2) - 1; k++) {
nuclear@1 46 Vector4 vox = vol->get_voxel(i, j, k);
nuclear@1 47 Vector4 next = vol->get_voxel(i, j, k + 1);
nuclear@1 48
nuclear@1 49 if(vox.w > 0.1 && next.w < 0.1) {
nuclear@1 50 glColor3f(vox.x, vox.y, vox.z);
nuclear@1 51
nuclear@1 52 float x = ((float)i - vol->get_size(0) / 2) * 0.1;
nuclear@1 53 float z = ((float)j - vol->get_size(1) / 2) * 0.1;
nuclear@1 54 float y = ((float)k - vol->get_size(2) / 2) * 0.1;
nuclear@1 55 draw_cube(Vector3(x, y, z), 0.1);
nuclear@1 56 }
nuclear@1 57 }
nuclear@1 58 }
nuclear@1 59 }
nuclear@1 60 glEnd();
nuclear@1 61
nuclear@1 62 glDisable(GL_COLOR_MATERIAL);
nuclear@1 63 }
nuclear@1 64
nuclear@1 65
nuclear@1 66 static void draw_cube(const Vector3 &pos, float sz)
nuclear@1 67 {
nuclear@1 68 sz /= 2.0;
nuclear@1 69
nuclear@1 70 glNormal3f(0, 0, 1);
nuclear@1 71 glVertex3f(pos.x - sz, pos.y - sz, pos.z + sz);
nuclear@1 72 glVertex3f(pos.x + sz, pos.y - sz, pos.z + sz);
nuclear@1 73 glVertex3f(pos.x + sz, pos.y + sz, pos.z + sz);
nuclear@1 74 glVertex3f(pos.x - sz, pos.y + sz, pos.z + sz);
nuclear@1 75
nuclear@1 76 glNormal3f(1, 0, 0);
nuclear@1 77 glVertex3f(pos.x + sz, pos.y - sz, pos.z + sz);
nuclear@1 78 glVertex3f(pos.x + sz, pos.y - sz, pos.z - sz);
nuclear@1 79 glVertex3f(pos.x + sz, pos.y + sz, pos.z - sz);
nuclear@1 80 glVertex3f(pos.x + sz, pos.y + sz, pos.z + sz);
nuclear@1 81
nuclear@1 82 glNormal3f(0, 0, -1);
nuclear@1 83 glVertex3f(pos.x + sz, pos.y - sz, pos.z - sz);
nuclear@1 84 glVertex3f(pos.x - sz, pos.y - sz, pos.z - sz);
nuclear@1 85 glVertex3f(pos.x - sz, pos.y + sz, pos.z - sz);
nuclear@1 86 glVertex3f(pos.x + sz, pos.y + sz, pos.z - sz);
nuclear@1 87
nuclear@1 88 glNormal3f(-1, 0, 0);
nuclear@1 89 glVertex3f(pos.x - sz, pos.y - sz, pos.z - sz);
nuclear@1 90 glVertex3f(pos.x - sz, pos.y - sz, pos.z + sz);
nuclear@1 91 glVertex3f(pos.x - sz, pos.y + sz, pos.z + sz);
nuclear@1 92 glVertex3f(pos.x - sz, pos.y + sz, pos.z - sz);
nuclear@1 93
nuclear@1 94 glNormal3f(0, 1, 0);
nuclear@1 95 glVertex3f(pos.x - sz, pos.y + sz, pos.z + sz);
nuclear@1 96 glVertex3f(pos.x + sz, pos.y + sz, pos.z + sz);
nuclear@1 97 glVertex3f(pos.x + sz, pos.y + sz, pos.z - sz);
nuclear@1 98 glVertex3f(pos.x - sz, pos.y + sz, pos.z - sz);
nuclear@1 99
nuclear@1 100 glNormal3f(0, -1, 0);
nuclear@1 101 glVertex3f(pos.x - sz, pos.y - sz, pos.z - sz);
nuclear@1 102 glVertex3f(pos.x + sz, pos.y - sz, pos.z - sz);
nuclear@1 103 glVertex3f(pos.x + sz, pos.y - sz, pos.z + sz);
nuclear@1 104 glVertex3f(pos.x - sz, pos.y - sz, pos.z + sz);
nuclear@1 105
nuclear@1 106 }