*/
#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include "common.h"
-#include "mat.h"
#include "list.h"
+#include "model.h"
+#include "mat.h"
#include "scene.h"
-#include "tri.h"
-/*
- * A group of triangles and a transformation.
- */
-struct _group
+static int _model_set_colors(model_t* m, FILE* file);
+static int _model_add_translate(model_t* m, FILE* file);
+static int _model_add_rotate(model_t* m, FILE* file);
+static int _model_add_scale(model_t* m, FILE* file);
+static int _model_set_material(model_t* m, FILE* file);
+static int _scene_set_ambient(scene_t* s, FILE* file);
+static int _scene_add_light(scene_t* s, FILE* file);
+
+
+struct scene
{
- list_t* triangles;
- mat_t modelview;
+ list_t* models;
+ int w, h;
+ mat_t view;
+ mat_t projection;
+ vec_t eye;
+ list_t* lights;
+ color_t ambient;
};
-typedef struct _group _group_t;
-/*
- * Allocate a group by reading raw triangle coordinates from a file.
- */
-static _group_t* _group_alloc(const char* filename)
+
+scene_t* scene_alloc(FILE* file)
{
- FILE* file = fopen(filename, "r");
- if (file == NULL) {
- fprintf(stderr, "Cannot read %s: %s\n", filename, strerror(errno));
+ int w, h;
+ double eyeX, eyeY, eyeZ, spotX, spotY, spotZ, upX, upY, upZ;
+ double fovy, aspect, near, far;
+ if (fscanf(file, "U3 %d %d %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf",
+ &w, &h,
+ &eyeX, &eyeY, &eyeZ, &spotX, &spotY, &spotZ, &upX, &upY, &upZ,
+ &fovy, &aspect, &near, &far) != 15) {
+ fprintf(stderr, "Cannot read scene header.\n");
return NULL;
}
- _group_t* g = (_group_t*)mem_alloc(sizeof(_group_t));
- g->triangles = NULL;
- g->modelview = MAT_IDENTITY;
-
- double x1, y1, z1, x2, y2, z2, x3, y3, z3;
- while (fscanf(file, " %lf %lf %lf %lf %lf %lf %lf %lf %lf",
- &x1, &y1, &z1, &x2, &y2, &z2, &x3, &y3, &z3) == 9) {
- tri_t* t = tri_alloc(
- vert_new2((scal_t)x1, (scal_t)y1, (scal_t)z1, COLOR_WHITE),
- vert_new2((scal_t)x2, (scal_t)y2, (scal_t)z2, COLOR_WHITE),
- vert_new2((scal_t)x3, (scal_t)y3, (scal_t)z3, COLOR_WHITE)
- );
- list_push2(&g->triangles, t, mem_free);
- }
- list_reverse(&g->triangles);
+ scene_t* s = (scene_t*)mem_alloc(sizeof(scene_t));
+ s->models = NULL;
+ s->w = w;
+ s->h = h;
+ s->view = MAT_LOOKAT(vec_new( (scal_t)eyeX, (scal_t)eyeY, (scal_t)eyeZ),
+ vec_new((scal_t)spotX, (scal_t)spotY, (scal_t)spotZ),
+ vec_new( (scal_t)upX, (scal_t)upY, (scal_t)upZ));
+ s->eye = vec_new(eyeX, eyeY, eyeZ);
+ s->projection = MAT_PERSPECTIVE((scal_t)fovy, (scal_t)aspect, (scal_t)near, (scal_t)far);
+ s->lights = NULL;
+ s->ambient = color_new(S(0.05), S(0.05), S(0.05), S(1.0));
- fclose(file);
+ char filename[4096];
+ model_t* m = NULL;
- if (g->triangles == NULL) {
- fprintf(stderr, "No triangles coordinates read from %s\n", filename);
- mem_free(g);
- return NULL;
+#define _ASSERT_G \
+if (m == NULL) { \
+ fprintf(stderr, "Unexpected line before group is specified.\n"); \
+ goto fail; \
+}
+
+ char type;
+ while (fscanf(file, " %c", &type) == 1) {
+ switch (type) {
+ case 'g':
+ if (fgets(filename, 4096, file) == NULL) {
+ fprintf(stderr, "Cannot read model filename.\n");
+ }
+ m = model_alloc(trim(filename));
+ if (m == NULL) {
+ goto fail;
+ }
+ list_push2(&s->models, m, DTOR(model_destroy));
+ break;
+
+ case 'c':
+ _ASSERT_G;
+ if (_model_set_colors(m, file) != 0) {
+ goto fail;
+ }
+ break;
+
+ case 't':
+ _ASSERT_G;
+ if (_model_add_translate(m, file) != 0) {
+ goto fail;
+ }
+ break;
+
+ case 'r':
+ if (_model_add_rotate(m, file) != 0) {
+ goto fail;
+ }
+ break;
+
+ case 's':
+ _ASSERT_G;
+ if (_model_add_scale(m, file) != 0) {
+ goto fail;
+ }
+ break;
+
+ case 'A':
+ if (_scene_set_ambient(s, file) != 0) {
+ goto fail;
+ }
+ break;
+
+ case 'L':
+ if (_scene_add_light(s, file) != 0) {
+ goto fail;
+ }
+ break;
+
+ case 'M':
+ _ASSERT_G;
+ if (_model_set_material(m, file) != 0) {
+ goto fail;
+ }
+ break;
+
+ case 'X':
+ goto done;
+
+ default:
+ fprintf(stderr, "Unknown identifier: %c\n", type);
+ }
}
+#undef _ASSERT_G
+
+done:
+ return s;
- return g;
+fail:
+ scene_destroy(s);
+ return NULL;
}
-/*
- * Destroy a group.
- */
-static void _group_destroy(_group_t* g)
+void scene_destroy(scene_t* s)
{
- list_destroy(g->triangles);
- mem_free(g);
+ list_destroy(&s->models);
+ list_destroy(&s->lights);
+ mem_free(s);
}
/*
* Set the colors of the triangles in the group as defined in a file.
*/
-static int _group_set_colors(_group_t* g, FILE* file)
+static int _model_set_colors(model_t* m, FILE* file)
{
double r1, g1, b1, r2, g2, b2, r3, g3, b3;
if (fscanf(file, " %lf %lf %lf %lf %lf %lf %lf %lf %lf",
&r1, &g1, &b1, &r2, &g2, &b2, &r3, &g3, &b3) != 9) {
- fprintf(stderr, "Cannot read color values from scene file.\n");
+ fprintf(stderr, "Cannot read color values from scene.\n");
return -1;
}
- for (list_t* i = g->triangles; i; i = i->link) {
+ for (const list_t* i = model_geometry(m); i; i = i->link) {
tri_t* t = (tri_t*)i->val;
t->a.c = color_new((colorchan_t)r1, (colorchan_t)g1, (colorchan_t)b1, S(1.0));
t->b.c = color_new((colorchan_t)r2, (colorchan_t)g2, (colorchan_t)b2, S(1.0));
/*
* Concat a translation matrix to the transformation as defined in a file.
*/
-static int _group_add_translate(_group_t* g, FILE* file)
+static int _model_add_translate(model_t* m, FILE* file)
{
- double tx, ty;
- if (fscanf(file, " %lf %lf", &tx, &ty) != 2) {
- fprintf(stderr, "Cannot read translate coordinates from scene file.\n");
+ double tx, ty, tz;
+ if (fscanf(file, " %lf %lf %lf", &tx, &ty, &tz) != 3) {
+ fprintf(stderr, "Cannot read translate coordinates from scene.\n");
return -1;
}
-
- g->modelview = mat_mult(g->modelview, MAT_TRANSLATE((scal_t)tx, (scal_t)ty, S(1.0)));
+ mat_t transform = MAT_TRANSLATE((scal_t)tx, (scal_t)ty, (scal_t)tz);
+ model_transform(m, &transform);
return 0;
}
/*
* Concat a rotation matrix to the transformation as defined in a file.
*/
-static int _group_add_rotate(_group_t* g, FILE* file)
+static int _model_add_rotate(model_t* m, FILE* file)
{
- double theta;
- if (fscanf(file, " %lf", &theta) != 1) {
- fprintf(stderr, "Cannot read rotation angle from scene file.\n");
+ double theta, ax, ay, az;
+ if (fscanf(file, " %lf %lf %lf %lf", &theta, &ax, &ay, &az) != 4) {
+ fprintf(stderr, "Cannot read rotation angle from scene.\n");
return -1;
}
-
- g->modelview = mat_mult(g->modelview, MAT_ROTATE_Z((scal_t)theta));
+ mat_t transform = MAT_ROTATE((scal_t)theta, (scal_t)ax, (scal_t)ay, (scal_t)az);
+ model_transform(m, &transform);
return 0;
}
/*
* Concat a scale matrix to the transformation as defined in a file.
*/
-static int _group_add_scale(_group_t* g, FILE* file)
+static int _model_add_scale(model_t* m, FILE* file)
{
- double sx, sy;
- if (fscanf(file, " %lf %lf", &sx, &sy) != 2) {
- fprintf(stderr, "Cannot read scale factors from scene file.\n");
+ double sx, sy, sz;
+ if (fscanf(file, " %lf %lf %lf", &sx, &sy, &sz) != 3) {
+ fprintf(stderr, "Cannot read scale factors from scene.\n");
return -1;
}
-
- g->modelview = mat_mult(g->modelview, MAT_SCALE((scal_t)sx, (scal_t)sy, S(1.0)));
+ mat_t transform = MAT_SCALE((scal_t)sx, (scal_t)sy, (scal_t)sz);
+ model_transform(m, &transform);
return 0;
}
-
-struct scene
-{
- list_t* groups;
- int w;
- int h;
- mat_t projection;
-};
-
-scene_t* scene_alloc(const char* filename)
+/*
+ * Set the specular highlight and shininess factor for the group.
+ */
+static int _model_set_material(model_t* m, FILE* file)
{
- scene_t* s = (scene_t*)mem_alloc(sizeof(scene_t));
- s->groups = NULL;
-
- FILE* file = fopen(filename, "r");
-
- int w, h;
- double minX, minY, maxX, maxY;
- if (fscanf(file, "U2 %d %d %lf %lf %lf %lf",
- &w, &h, &minX, &minY, &maxX, &maxY) != 6) {
- fprintf(stderr, "Cannot read scene file header.\n");
- return NULL;
+ double sr, sg, sb, shininess;
+ if (fscanf(file, " %lf %lf %lf %lf", &sr, &sg, &sb, &shininess) != 4) {
+ fprintf(stderr, "Cannot read material information from scene.\n");
+ return -1;
}
-
- s->w = w;
- s->h = h;
- s->projection = MAT_ORTHO((scal_t)minX, (scal_t)maxX, (scal_t)minY, (scal_t)maxY);
-
- char grp_filename[4096];
- _group_t* g = NULL;
-
-#define _ASSERT_G \
-if (g == NULL) { \
- fprintf(stderr, "Unexpected line before group is loaded.\n"); \
- goto fail; \
+ model_material(m, color_new((scal_t)sr, (scal_t)sg, (scal_t)sb, S(1.0)), (scal_t)shininess);
+ return 0;
}
- char type;
- while (fscanf(file, " %c", &type) == 1) {
- switch (type) {
- case 'g':
- if (fgets(grp_filename, 4096, file) == NULL) {
- fprintf(stderr, "Cannot read raw triangle filename.\n");
- }
- trim(grp_filename);
- g = _group_alloc(grp_filename);
- if (g == NULL) {
- goto fail;
- }
- list_push2(&s->groups, g, DTOR(_group_destroy));
- break;
-
- case 'c':
- _ASSERT_G;
- if (_group_set_colors(g, file) != 0) {
- goto fail;
- }
- break;
-
- case 't':
- _ASSERT_G;
- if (_group_add_translate(g, file) != 0) {
- goto fail;
- }
- break;
-
- case 'r':
- if (_group_add_rotate(g, file) != 0) {
- goto fail;
- }
- break;
-
- case 's':
- _ASSERT_G;
- if (_group_add_scale(g, file) != 0) {
- goto fail;
- }
- break;
-
- default:
- fprintf(stderr, "Unknown identifier: %c\n", type);
- }
+/*
+ * Set the ambient light properties of a scene.
+ */
+static int _scene_set_ambient(scene_t* s, FILE* file)
+{
+ double r, g, b;
+ if (fscanf(file, " %lf %lf %lf", &r, &g, &b) != 3) {
+ fprintf(stderr, "Cannot read ambient light from scene.\n");
+ return -1;
}
- list_reverse(&s->groups);
-
-#undef _ASSERT_G
-
- fclose(file);
- return s;
-
-fail:
- scene_destroy(s);
- return NULL;
+ s->ambient = color_new((scal_t)r, (scal_t)g, (scal_t)b, S(1.0));
+ return 0;
}
-void scene_destroy(scene_t* s)
+/*
+ * Add a light to the scene.
+ */
+static int _scene_add_light(scene_t* s, FILE* file)
{
- list_destroy(s->groups);
- mem_free(s);
+ double lx, ly, lz, dr, dg, db, sr, sg, sb;
+ if (fscanf(file, " %lf %lf %lf %lf %lf %lf %lf %lf %lf",
+ &lx, &ly, &lz, &dr, &dg, &db, &sr, &sg, &sb) != 9) {
+ fprintf(stderr, "Cannot read light values from scene.\n");
+ return -1;
+ }
+ light_t* l = light_alloc(
+ vec_new(lx, ly, lz),
+ color_new(dr, dg, db, S(1.0)),
+ color_new(sr, sg, sb, S(1.0))
+ );
+ list_push2(&s->lights, l, mem_free);
+ return 0;
}
-pixmap_t* scene_render(scene_t* s)
+raster_t* scene_render(scene_t* s)
{
- pixmap_t* pix = pixmap_alloc(s->w, s->h, COLOR_BLACK);
- pixmap_projection(pix, &s->projection);
-
- for (list_t* gi = s->groups; gi; gi = gi->link) {
- _group_t* g = (_group_t*)gi->val;
- pixmap_modelview(pix, &g->modelview);
- for (list_t* ti = g->triangles; ti; ti = ti->link) {
- pixmap_draw_tri(pix, (tri_t*)ti->val);
- }
+#if VERBOSITY >= 3
+ timer_start();
+#endif
+
+ raster_t* p = raster_alloc(s->w, s->h, COLOR_BLACK);
+ raster_view(p, &s->view);
+ raster_projection(p, &s->projection);
+ raster_eye(p, s->eye);
+ raster_ambient(p, s->ambient);
+
+ for (list_t* i = s->lights; i; i = i->link) {
+ raster_light(p, *(light_t*)i->val);
}
- return pix;
+#if VERBOSITY >= 3
+ printf("rendering scene...\n");
+#endif
+
+ for (list_t* gi = s->models; gi; gi = gi->link) {
+ model_t* m = (model_t*)gi->val;
+ raster_draw_model(p, m);
+ }
+
+#if VERBOSITY >= 3
+ long dt = timer_stop();
+ printf("render complete!\ntime\t%.3fms\n", (float)dt / 1000.0f);
+#endif
+
+ return p;
}
projects / chaz / rasterize / blobdiff