reorganized the source code

[dosdemo] / src / scr / infcubes.c

diff --git a/src/scr/infcubes.c b/src/scr/infcubes.c
new file mode 100644 (file)
index 0000000..dd1bd33
--- /dev/null
+++ b/src/scr/infcubes.c
@@ -0,0 +1,174 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include "demo.h"
+#include "3dgfx.h"
+#include "screen.h"
+#include "cfgopt.h"
+#include "polyfill.h"
+#include "imago2.h"
+#include "gfxutil.h"
+#include "mesh.h"
+
+static int init(void);
+static void destroy(void);
+static void start(long trans_time);
+static void draw(void);
+static int gen_phong_tex(struct pimage *img, int xsz, int ysz, float sexp,
+               float offx, float offy, int dr, int dg, int db, int sr, int sg, int sb);
+
+static struct screen scr = {
+       "infcubes",
+       init,
+       destroy,
+       start, 0,
+       draw
+};
+
+static float cam_theta = -29, cam_phi = 35;
+static float cam_dist = 6;
+static struct pimage tex_inner, tex_outer;
+static struct g3d_mesh mesh_cube, mesh_cube2;
+
+struct screen *infcubes_screen(void)
+{
+       return &scr;
+}
+
+#define PHONG_TEX_SZ   128
+
+static int init(void)
+{
+       static const float scalemat[16] = {-6, 0, 0, 0, 0, -6, 0, 0, 0, 0, -6, 0, 0, 0, 0, 1};
+       /*
+       if(!(tex_inner.pixels = img_load_pixels("data/crate.jpg", &tex_inner.width,
+                                       &tex_inner.height, IMG_FMT_RGB24))) {
+               fprintf(stderr, "infcubes: failed to load crate texture\n");
+               return -1;
+       }
+       convimg_rgb24_rgb16(tex_inner.pixels, (unsigned char*)tex_inner.pixels, tex_inner.width, tex_inner.height);
+       */
+       gen_phong_tex(&tex_inner, PHONG_TEX_SZ, PHONG_TEX_SZ, 5.0f, 0, 0, 10, 50, 92, 192, 192, 192);
+
+       if(!(tex_outer.pixels = img_load_pixels("data/refmap1.jpg", &tex_outer.width,
+                                       &tex_outer.height, IMG_FMT_RGB24))) {
+               fprintf(stderr, "infcubes: failed to load outer texture\n");
+               return -1;
+       }
+       convimg_rgb24_rgb16(tex_outer.pixels, (unsigned char*)tex_outer.pixels, tex_outer.width, tex_outer.height);
+       /*gen_phong_tex(&tex_outer, PHONG_TEX_SZ, PHONG_TEX_SZ, 5.0f, 50, 50, 50, 255, 255, 255);*/
+
+       /*
+       if(gen_cube_mesh(&mesh_cube, 1.0f, 3) == -1) {
+               return -1;
+       }
+       */
+       if(load_mesh(&mesh_cube, "data/bevelbox.obj") == -1) {
+               return -1;
+       }
+       if(load_mesh(&mesh_cube2, "data/bevelbox.obj") == -1) {
+               return -1;
+       }
+       apply_mesh_xform(&mesh_cube2, scalemat);
+       normalize_mesh_normals(&mesh_cube2);
+       return 0;
+}
+
+static void destroy(void)
+{
+       img_free_pixels(tex_inner.pixels);
+}
+
+static void start(long trans_time)
+{
+       g3d_matrix_mode(G3D_PROJECTION);
+       g3d_load_identity();
+       g3d_perspective(70.0, 1.3333333, 0.5, 100.0);
+
+       g3d_enable(G3D_CULL_FACE);
+       g3d_disable(G3D_LIGHTING);
+       g3d_enable(G3D_LIGHT0);
+}
+
+static void update(void)
+{
+       mouse_orbit_update(&cam_theta, &cam_phi, &cam_dist);
+}
+
+static void draw(void)
+{
+       float t = (float)time_msec / 16.0f;
+       update();
+
+       g3d_matrix_mode(G3D_MODELVIEW);
+       g3d_load_identity();
+       g3d_translate(0, 0, -cam_dist);
+       g3d_rotate(cam_phi, 1, 0, 0);
+       g3d_rotate(cam_theta, 0, 1, 0);
+       if(opt.sball) {
+               g3d_mult_matrix(sball_matrix);
+       }
+
+       memset(fb_pixels, 0, fb_width * fb_height * 2);
+
+       g3d_polygon_mode(G3D_FLAT);
+       g3d_enable(G3D_TEXTURE_2D);
+       g3d_enable(G3D_TEXTURE_GEN);
+
+       g3d_push_matrix();
+       g3d_rotate(t, 1, 0, 0);
+       g3d_rotate(t, 0, 1, 0);
+       g3d_set_texture(tex_outer.width, tex_outer.height, tex_outer.pixels);
+       draw_mesh(&mesh_cube2);
+       g3d_pop_matrix();
+
+       g3d_set_texture(tex_inner.width, tex_inner.height, tex_inner.pixels);
+       draw_mesh(&mesh_cube);
+       g3d_disable(G3D_TEXTURE_GEN);
+
+       swap_buffers(fb_pixels);
+}
+
+static int gen_phong_tex(struct pimage *img, int xsz, int ysz, float sexp,
+               float offx, float offy, int dr, int dg, int db, int sr, int sg, int sb)
+{
+       int i, j;
+       float u, v, du, dv;
+       uint16_t *pix;
+
+       if(!(img->pixels = malloc(xsz * ysz * sizeof *pix))) {
+               return -1;
+       }
+       pix = img->pixels;
+
+       du = 2.0f / (float)(xsz - 1);
+       dv = 2.0f / (float)(ysz - 1);
+
+       v = -1.0f - offy;
+       for(i=0; i<ysz; i++) {
+               u = -1.0f - offx;
+               for(j=0; j<xsz; j++) {
+                       float d = sqrt(u * u + v * v);
+                       float val = pow(cos(d * M_PI / 2.0f), sexp);
+                       int ival = abs(val * 255.0f);
+
+                       int r = dr + ival * sr / 256;
+                       int g = dg + ival * sg / 256;
+                       int b = db + ival * sb / 256;
+
+                       if(r > 255) r = 255;
+                       if(g > 255) g = 255;
+                       if(b > 255) b = 255;
+
+                       *pix++ = PACK_RGB16(r, g, b);
+
+                       u += du;
+               }
+               v += dv;
+       }
+
+       img->width = xsz;
+       img->height = ysz;
+       return 0;
+}