rayzor

annotate src/modeller.cc @ 9:70e332156d02

find changesets by author, revision, files, or words in the commit message
moving along
author John Tsiombikas <nuclear@member.fsf.org>
date Thu, 10 Apr 2014 02:31:31 +0300
parents
children d94a69933a71
rev   line source
nuclear@9 1 #include <string.h>
nuclear@9 2 #include <assert.h>
nuclear@9 3 #include "modeller.h"
nuclear@9 4 #include "min3d.h"
nuclear@9 5 #include "rayzor.h"
nuclear@9 6 #include "scene.h"
nuclear@9 7
nuclear@9 8 struct ModellerImpl {
nuclear@9 9 int mx, my;
nuclear@9 10 float cam_theta, cam_phi, cam_dist;
nuclear@9 11
nuclear@9 12 struct m3d_image rbuf;
nuclear@9 13
nuclear@9 14 bool bnstate[8];
nuclear@9 15 int prev_x, prev_y;
nuclear@9 16 };
nuclear@9 17
nuclear@9 18 static void draw_grid(float size, float spacing);
nuclear@9 19
nuclear@9 20 Modeller::Modeller()
nuclear@9 21 {
nuclear@9 22 set_name("modeller");
nuclear@9 23 }
nuclear@9 24
nuclear@9 25 Modeller::~Modeller()
nuclear@9 26 {
nuclear@9 27 shutdown();
nuclear@9 28 }
nuclear@9 29
nuclear@9 30 bool Modeller::init()
nuclear@9 31 {
nuclear@9 32 mod = new ModellerImpl;
nuclear@9 33 memset(mod, 0, sizeof *mod);
nuclear@9 34
nuclear@9 35 mod->cam_phi = 25;
nuclear@9 36 mod->cam_dist = 5;
nuclear@9 37
nuclear@9 38 m3d_init();
nuclear@9 39 mod->rbuf.pixels = fb_pixels;
nuclear@9 40 mod->rbuf.xsz = fb_width;
nuclear@9 41 mod->rbuf.ysz = fb_height;
nuclear@9 42 m3d_set_buffers(&mod->rbuf, 0);
nuclear@9 43
nuclear@9 44 m3d_matrix_mode(M3D_PROJECTION);
nuclear@9 45 m3d_load_identity();
nuclear@9 46 m3d_perspective(50.0, (float)fb_width / (float)fb_height, 0.5, 500.0);
nuclear@9 47
nuclear@9 48 m3d_enable(M3D_CULL_FACE);
nuclear@9 49 return true;
nuclear@9 50 }
nuclear@9 51
nuclear@9 52 void Modeller::shutdown()
nuclear@9 53 {
nuclear@9 54 if(mod) {
nuclear@9 55 m3d_shutdown();
nuclear@9 56
nuclear@9 57 delete mod;
nuclear@9 58 mod = 0;
nuclear@9 59 }
nuclear@9 60 }
nuclear@9 61
nuclear@9 62 void Modeller::draw() const
nuclear@9 63 {
nuclear@9 64 m3d_clear(M3D_COLOR_BUFFER_BIT);
nuclear@9 65
nuclear@9 66 m3d_matrix_mode(M3D_MODELVIEW);
nuclear@9 67 m3d_load_identity();
nuclear@9 68 m3d_translate(0, 0, -mod->cam_dist);
nuclear@9 69 m3d_rotate(mod->cam_phi, 1, 0, 0);
nuclear@9 70 m3d_rotate(mod->cam_theta, 0, 1, 0);
nuclear@9 71
nuclear@9 72 draw_grid(10.0, 1.0);
nuclear@9 73
nuclear@9 74 scene->draw();
nuclear@9 75 }
nuclear@9 76
nuclear@9 77
nuclear@9 78 static void draw_grid(float size, float spacing)
nuclear@9 79 {
nuclear@9 80 int num_lines = size / spacing;
nuclear@9 81 float dist = size / 2.0;
nuclear@9 82
nuclear@9 83 m3d_disable(M3D_LIGHTING);
nuclear@9 84
nuclear@9 85 m3d_begin(M3D_LINES);
nuclear@9 86 m3d_color(0.4, 0.4, 0.4);
nuclear@9 87
nuclear@9 88 float x = -dist;
nuclear@9 89 for(int i=0; i<=num_lines; i++) {
nuclear@9 90 if(i != num_lines / 2) {
nuclear@9 91 m3d_vertex(-dist, 0, x);
nuclear@9 92 m3d_vertex(dist, 0, x);
nuclear@9 93 m3d_vertex(x, 0, -dist);
nuclear@9 94 m3d_vertex(x, 0, dist);
nuclear@9 95 }
nuclear@9 96 x += spacing;
nuclear@9 97 }
nuclear@9 98 m3d_end();
nuclear@9 99
nuclear@9 100 m3d_begin(M3D_LINES);
nuclear@9 101 m3d_color(1.0, 0, 0);
nuclear@9 102 m3d_vertex(-dist, 0, 0);
nuclear@9 103 m3d_vertex(dist, 0, 0);
nuclear@9 104 m3d_color(0, 1.0, 0);
nuclear@9 105 m3d_vertex(0, 0, -dist);
nuclear@9 106 m3d_vertex(0, 0, dist);
nuclear@9 107 m3d_end();
nuclear@9 108 }
nuclear@9 109
nuclear@9 110
nuclear@9 111 void Modeller::handle_keyboard(int key, bool press)
nuclear@9 112 {
nuclear@9 113 if(press) {
nuclear@9 114 switch(key) {
nuclear@9 115 case 27:
nuclear@9 116 quit_app();
nuclear@9 117 break;
nuclear@9 118
nuclear@9 119 default:
nuclear@9 120 break;
nuclear@9 121 }
nuclear@9 122 }
nuclear@9 123 }
nuclear@9 124
nuclear@9 125 void Modeller::handle_mbutton(int bn, bool press, int x, int y)
nuclear@9 126 {
nuclear@9 127 mod->bnstate[bn] = press;
nuclear@9 128 mod->prev_x = x;
nuclear@9 129 mod->prev_y = y;
nuclear@9 130 }
nuclear@9 131
nuclear@9 132 void Modeller::handle_mmotion(int x, int y)
nuclear@9 133 {
nuclear@9 134 int dx = x - mod->prev_x;
nuclear@9 135 int dy = y - mod->prev_y;
nuclear@9 136 mod->prev_x = x;
nuclear@9 137 mod->prev_y = y;
nuclear@9 138
nuclear@9 139 if(mod->bnstate[0]) {
nuclear@9 140 mod->cam_theta += dx * 0.5;
nuclear@9 141 mod->cam_phi += dy * 0.5;
nuclear@9 142
nuclear@9 143 if(mod->cam_phi < -90) mod->cam_phi = -90;
nuclear@9 144 if(mod->cam_phi > 90) mod->cam_phi = 90;
nuclear@9 145 }
nuclear@9 146 if(mod->bnstate[1]) {
nuclear@9 147 mod->cam_dist += dy * 0.1;
nuclear@9 148 if(mod->cam_dist < 0) mod->cam_dist = 0;
nuclear@9 149 }
nuclear@9 150 }