1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/modeller.cc	Thu Apr 10 02:31:31 2014 +0300
     1.3 @@ -0,0 +1,150 @@
     1.4 +#include <string.h>
     1.5 +#include <assert.h>
     1.6 +#include "modeller.h"
     1.7 +#include "min3d.h"
     1.8 +#include "rayzor.h"
     1.9 +#include "scene.h"
    1.10 +
    1.11 +struct ModellerImpl {
    1.12 +	int mx, my;
    1.13 +	float cam_theta, cam_phi, cam_dist;
    1.14 +
    1.15 +	struct m3d_image rbuf;
    1.16 +
    1.17 +	bool bnstate[8];
    1.18 +	int prev_x, prev_y;
    1.19 +};
    1.20 +
    1.21 +static void draw_grid(float size, float spacing);
    1.22 +
    1.23 +Modeller::Modeller()
    1.24 +{
    1.25 +	set_name("modeller");
    1.26 +}
    1.27 +
    1.28 +Modeller::~Modeller()
    1.29 +{
    1.30 +	shutdown();
    1.31 +}
    1.32 +
    1.33 +bool Modeller::init()
    1.34 +{
    1.35 +	mod = new ModellerImpl;
    1.36 +	memset(mod, 0, sizeof *mod);
    1.37 +
    1.38 +	mod->cam_phi = 25;
    1.39 +	mod->cam_dist = 5;
    1.40 +
    1.41 +	m3d_init();
    1.42 +	mod->rbuf.pixels = fb_pixels;
    1.43 +	mod->rbuf.xsz = fb_width;
    1.44 +	mod->rbuf.ysz = fb_height;
    1.45 +	m3d_set_buffers(&mod->rbuf, 0);
    1.46 +
    1.47 +	m3d_matrix_mode(M3D_PROJECTION);
    1.48 +	m3d_load_identity();
    1.49 +	m3d_perspective(50.0, (float)fb_width / (float)fb_height, 0.5, 500.0);
    1.50 +
    1.51 +	m3d_enable(M3D_CULL_FACE);
    1.52 +	return true;
    1.53 +}
    1.54 +
    1.55 +void Modeller::shutdown()
    1.56 +{
    1.57 +	if(mod) {
    1.58 +		m3d_shutdown();
    1.59 +
    1.60 +		delete mod;
    1.61 +		mod = 0;
    1.62 +	}
    1.63 +}
    1.64 +
    1.65 +void Modeller::draw() const
    1.66 +{
    1.67 +	m3d_clear(M3D_COLOR_BUFFER_BIT);
    1.68 +
    1.69 +	m3d_matrix_mode(M3D_MODELVIEW);
    1.70 +	m3d_load_identity();
    1.71 +	m3d_translate(0, 0, -mod->cam_dist);
    1.72 +	m3d_rotate(mod->cam_phi, 1, 0, 0);
    1.73 +	m3d_rotate(mod->cam_theta, 0, 1, 0);
    1.74 +
    1.75 +	draw_grid(10.0, 1.0);
    1.76 +
    1.77 +	scene->draw();
    1.78 +}
    1.79 +
    1.80 +
    1.81 +static void draw_grid(float size, float spacing)
    1.82 +{
    1.83 +	int num_lines = size / spacing;
    1.84 +	float dist = size / 2.0;
    1.85 +
    1.86 +	m3d_disable(M3D_LIGHTING);
    1.87 +
    1.88 +	m3d_begin(M3D_LINES);
    1.89 +	m3d_color(0.4, 0.4, 0.4);
    1.90 +
    1.91 +	float x = -dist;
    1.92 +	for(int i=0; i<=num_lines; i++) {
    1.93 +		if(i != num_lines / 2) {
    1.94 +			m3d_vertex(-dist, 0, x);
    1.95 +			m3d_vertex(dist, 0, x);
    1.96 +			m3d_vertex(x, 0, -dist);
    1.97 +			m3d_vertex(x, 0, dist);
    1.98 +		}
    1.99 +		x += spacing;
   1.100 +	}
   1.101 +	m3d_end();
   1.102 +
   1.103 +	m3d_begin(M3D_LINES);
   1.104 +	m3d_color(1.0, 0, 0);
   1.105 +	m3d_vertex(-dist, 0, 0);
   1.106 +	m3d_vertex(dist, 0, 0);
   1.107 +	m3d_color(0, 1.0, 0);
   1.108 +	m3d_vertex(0, 0, -dist);
   1.109 +	m3d_vertex(0, 0, dist);
   1.110 +	m3d_end();
   1.111 +}
   1.112 +
   1.113 +
   1.114 +void Modeller::handle_keyboard(int key, bool press)
   1.115 +{
   1.116 +	if(press) {
   1.117 +		switch(key) {
   1.118 +		case 27:
   1.119 +			quit_app();
   1.120 +			break;
   1.121 +
   1.122 +		default:
   1.123 +			break;
   1.124 +		}
   1.125 +	}
   1.126 +}
   1.127 +
   1.128 +void Modeller::handle_mbutton(int bn, bool press, int x, int y)
   1.129 +{
   1.130 +	mod->bnstate[bn] = press;
   1.131 +	mod->prev_x = x;
   1.132 +	mod->prev_y = y;
   1.133 +}
   1.134 +
   1.135 +void Modeller::handle_mmotion(int x, int y)
   1.136 +{
   1.137 +	int dx = x - mod->prev_x;
   1.138 +	int dy = y - mod->prev_y;
   1.139 +	mod->prev_x = x;
   1.140 +	mod->prev_y = y;
   1.141 +
   1.142 +	if(mod->bnstate[0]) {
   1.143 +		mod->cam_theta += dx * 0.5;
   1.144 +		mod->cam_phi += dy * 0.5;
   1.145 +
   1.146 +		if(mod->cam_phi < -90) mod->cam_phi = -90;
   1.147 +		if(mod->cam_phi > 90) mod->cam_phi = 90;
   1.148 +	}
   1.149 +	if(mod->bnstate[1]) {
   1.150 +		mod->cam_dist += dy * 0.1;
   1.151 +		if(mod->cam_dist < 0) mod->cam_dist = 0;
   1.152 +	}
   1.153 +}