#endif
#ifndef ELM_LIB_QUICKLAUNCH
+//#define PAGEMESH 1
+
typedef struct _State State;
typedef struct _Slice Slice;
+typedef struct _Vertex2 Vertex2;
+typedef struct _Vertex3 Vertex3;
+
struct _State
{
- Evas_Object *orig, *win, *base;
+ Evas_Object *orig, *win;
Evas_Coord down_x, down_y;
Eina_Bool down : 1;
Evas_Coord x, y;
+ Slice *base;
Eina_List *slices;
};
struct _Slice
{
Evas_Object *obj;
+ // (0)---(1)
+ // | |
+ // | |
+ // (3)---(2)
+ double u[4], v[4];
+ double x[4], y[4], z[4];
+};
+
+struct _Vertex2
+{
+ double x, y;
+};
+
+struct _Vertex3
+{
+ double x, y, z;
};
static State state =
{
- NULL, NULL, NULL,
+ NULL, NULL,
0, 0,
0,
0, 0,
NULL,
+ NULL
};
-#define RES 8
+#define RES 32
+
+static Slice *
+_slice_new(State *st)
+{
+ Slice *sl;
+
+ sl = calloc(1, sizeof(Slice));
+ if (!sl) return NULL;
+ sl->obj = evas_object_image_add(evas_object_evas_get(st->win));
+ evas_object_image_smooth_scale_set(sl->obj, 0);
+ evas_object_pass_events_set(sl->obj, 1);
+ evas_object_image_source_set(sl->obj, st->orig);
+ evas_object_show(sl->obj);
+ return sl;
+}
+
+static void
+_slice_free(Slice *sl)
+{
+ evas_object_del(sl->obj);
+ free(sl);
+}
+
+static void
+_slice_apply(Slice *sl, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h)
+{
+ Evas_Map *m;
+ int i;
+
+ m = evas_map_new(4);
+ evas_map_smooth_set(m, 0);
+
+ for (i = 0; i < 4; i++)
+ {
+ evas_map_point_coord_set(m, i, x + sl->x[i], y + sl->y[i], sl->z[i]);
+ evas_map_point_image_uv_set(m, i, sl->u[i] , sl->v[i]);
+ evas_map_point_color_set(m, i, 255, 255, 255, 255);
+ }
+
+ evas_map_util_3d_perspective(m, x + (w / 2), y + (h / 2), 0, 512);
+
+/*
+ // FIXME: lighting should be manual with pt 0 and 3 being white and
+ // 2 and 3 matching the
+ evas_map_util_3d_lighting(m,
+ 0 , 0 , -1000,
+ 255, 255, 255,
+ 20 , 20 , 20);
+ */
+
+ evas_object_map_enable_set(sl->obj, EINA_TRUE);
+ evas_object_image_fill_set(sl->obj, 0, 0, w, h);
+ evas_object_map_set(sl->obj, m);
+ evas_map_free(m);
+}
+
+static void
+_slice_xyz(Slice *sl,
+ double x1, double y1, double z1,
+ double x2, double y2, double z2,
+ double x3, double y3, double z3,
+ double x4, double y4, double z4)
+{
+ sl->x[0] = x1; sl->y[0] = y1; sl->z[0] = z1;
+ sl->x[1] = x2; sl->y[1] = y2; sl->z[1] = z2;
+ sl->x[2] = x3; sl->y[2] = y3; sl->z[2] = z3;
+ sl->x[3] = x4; sl->y[3] = y4; sl->z[3] = z4;
+}
+
+static void
+_slice_uv(Slice *sl,
+ double u1, double v1,
+ double u2, double v2,
+ double u3, double v3,
+ double u4, double v4)
+{
+ sl->u[0] = u1; sl->v[0] = v1;
+ sl->u[1] = u2; sl->v[1] = v2;
+ sl->u[2] = u3; sl->v[2] = v3;
+ sl->u[3] = u4; sl->v[3] = v4;
+}
+
+#ifdef PAGEMESH
+static Evas_Object *sl_rho, *sl_theta, *sl_A;
+
+static void
+_deform_point(Vertex2 *vi, Vertex3 *vo, double rho, double theta, double A)
+{
+ // ^Y
+ // |
+ // | X
+ // +---->
+ // theta == cone angle (0 -> PI/2)
+ // A == distance of cone apex from origin
+ // rho == angle of cone from vertical axis (...-PI/2 to PI/2...)
+ Vertex3 v1; // First stage of the deformation
+ double R, r, beta;
+
+ // Radius of the circle circumscribed by vertex (vi->x, vi->y) around A
+ // on the x-y plane
+ R = sqrt(vi->x * vi->x + pow(vi->y - A, 2));
+ // Now get the radius of the cone cross section intersected by our vertex
+ // in 3D space.
+ r = R * sin(theta);
+ // Angle subtended by arc |ST| on the cone cross section.
+ beta = asin(vi->x / R) / sin(theta);
+
+ // *** MAGIC!!! ***
+ v1.x = r * sin(beta);
+ v1.y = R + A - r * (1 - cos(beta)) * sin(theta);
+ v1.z = r * (1 - cos(beta)) * cos(theta);
+
+ // Apply a basic rotation transform around the y axis to rotate the curled
+ // page. These two steps could be combined through simple substitution,
+ // but are left separate to keep the math simple for debugging and
+ // illustrative purposes.
+ vo->x = (v1.x * cos(rho)) - (v1.z * sin(rho));
+ vo->y = v1.y;
+ vo->z = (v1.x * sin(rho)) + (v1.z * cos(rho));
+}
+
+static void
+_test(void)
+{
+ static Eina_List *pts = NULL;
+ Evas_Object *o;
+ Evas_Map *m;
+ int i, j, k;
+ Evas_Coord x, y, w, h;
+ State *st = &state;
+
+ EINA_LIST_FREE(pts, o) evas_object_del(o);
+
+ evas_object_geometry_get(st->orig, &x, &y, &w, &h);
+ for (j = 0; j < h; j += 20)
+ {
+ for (i = 0; i < w; i += 20)
+ {
+ Vertex2 vi;
+ Vertex3 vo;
+ double rho, theta, A, n;
+
+ vi.x = i;
+ vi.y = j;
+ rho = elm_slider_value_get(sl_rho);
+ A = elm_slider_value_get(sl_A);
+ theta = elm_slider_value_get(sl_theta);
+
+ _deform_point(&vi, &vo, rho, theta, A);
+
+ o = evas_object_image_add(evas_object_evas_get(st->win));
+ evas_object_image_smooth_scale_set(o, 0);
+ evas_object_pass_events_set(o, 1);
+ evas_object_image_source_set(o, st->orig);
+ evas_object_show(o);
+
+ m = evas_map_new(4);
+ evas_map_smooth_set(m, 0);
+
+ k = 0;
+ evas_map_point_coord_set(m, k, x + vo.x, y + vo.y, -vo.z);
+ evas_map_point_image_uv_set(m, k, 0 , 0);
+ evas_map_point_color_set(m, k, 255, 255, 255, 255);
+ k++;
+ evas_map_point_coord_set(m, k, x + vo.x + 10, y + vo.y, -vo.z);
+ evas_map_point_image_uv_set(m, k, w , 0);
+ evas_map_point_color_set(m, k, 255, 255, 255, 255);
+ k++;
+ evas_map_point_coord_set(m, k, x + vo.x + 10, y + vo.y + 10, -vo.z);
+ evas_map_point_image_uv_set(m, k, w , h);
+ evas_map_point_color_set(m, k, 255, 255, 255, 255);
+ k++;
+ evas_map_point_coord_set(m, k, x + vo.x, y + vo.y + 10, -vo.z);
+ evas_map_point_image_uv_set(m, k, 0 , h);
+ evas_map_point_color_set(m, k, 255, 255, 255, 255);
+ k++;
+
+ evas_map_util_3d_perspective(m, x + (w / 2), y + (h / 2), 0, 512);
+
+ evas_object_map_enable_set(o, EINA_TRUE);
+ evas_object_image_fill_set(o, 0, 0, w, h);
+ evas_object_map_set(o, m);
+ evas_map_free(m);
+
+ pts = eina_list_append(pts, o);
+ }
+ }
+}
+
+static void
+_sl_ch(void *data __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+ _test();
+}
+#endif
static void
_slice_update(State *st)
Evas_Coord x1, y1, x2, y2, mx, my, px, rx, ry, prx, pry, dst, dx, dy, pdst;
Evas_Coord x, y, w, h;
int i;
- Evas_Map *m;
Slice *sl;
int rad;
if (my < 0) my = 0;
else if (my >= h) my = h - 1;
- if (!st->base)
- {
- st->base = evas_object_image_add(evas_object_evas_get(st->win));
- evas_object_image_smooth_scale_set(st->base, 0);
- evas_object_image_fill_set(st->base, 0, 0, w, h);
- evas_object_pass_events_set(st->base, 1);
- evas_object_image_source_set(st->base, st->orig);
- evas_object_show(st->base);
- }
-
- m = evas_map_new(4);
- evas_map_smooth_set(m, 0);
-
- evas_map_point_coord_set(m, 0, x , y , 0);
- evas_map_point_coord_set(m, 1, x + mx, y , 0);
- evas_map_point_coord_set(m, 2, x + mx, y + h, 0);
- evas_map_point_coord_set(m, 3, x , y + h, 0);
-
- evas_map_point_image_uv_set(m, 0, 0 , 0);
- evas_map_point_image_uv_set(m, 1, mx, 0);
- evas_map_point_image_uv_set(m, 2, mx, h);
- evas_map_point_image_uv_set(m, 3, 0 , h);
-
- evas_map_point_color_set(m, 0, 255, 255, 255, 255);
- evas_map_point_color_set(m, 1, 255, 255, 255, 255);
- evas_map_point_color_set(m, 2, 255, 255, 255, 255);
- evas_map_point_color_set(m, 3, 255, 255, 255, 255);
-
-/*
- // FIXME: lighting should be manual with pt 0 and 3 being white and
- // 2 and 3 matching the
- evas_map_util_3d_lighting(m,
- 0 , 0 , -1000,
- 255, 255, 255,
- 20 , 20 , 20);
- */
- evas_map_util_3d_perspective(m, x + (w / 2), y + (h / 2), 0, 512);
-
- evas_object_map_enable_set(st->base, 1);
- evas_object_map_set(st->base, m);
- evas_map_free(m);
-
- EINA_LIST_FREE(st->slices, sl)
- {
- evas_object_del(sl->obj);
- free(sl);
- }
+ if (!st->base) st->base = _slice_new(st);
+ sl = st->base;
+
+ _slice_xyz(sl,
+ 0, 0, 0,
+ mx, 0, 0,
+ mx, h, 0,
+ 0, h, 0);
+ _slice_uv(sl,
+ 0, 0,
+ mx, 0,
+ mx, h,
+ 0, h);
+ _slice_apply(sl, x, y, w, h);
+
+ EINA_LIST_FREE(st->slices, sl) _slice_free(sl);
// cylinder radius is width / 8
rad = (w - mx) / 4;
if (rad < (w / 16)) rad = (w / 16);
if (rad > (w / 8)) rad = w / 8;
- rad = w / 12;
+ rad = w / 10;
px = mx;
prx = 0;
pry = rad;
for (i = 1; i < RES; i++)
{
- sl = calloc(1, sizeof(Slice));
- st->slices = eina_list_append(st->slices, sl);
- sl->obj = evas_object_image_add(evas_object_evas_get(st->win));
- evas_object_image_smooth_scale_set(sl->obj, 0);
- evas_object_image_fill_set(sl->obj, 0, 0, w, h);
- evas_object_pass_events_set(sl->obj, 1);
- evas_object_image_source_set(sl->obj, st->orig);
- evas_object_show(sl->obj);
-
rx = (double)rad * sin((i * M_PI) / RES);
ry = (double)rad * cos((i * M_PI) / RES);
dx = rx - prx;
}
if (dst <= 0) break;
- m = evas_map_new(4);
- evas_map_smooth_set(m, 0);
-
- evas_map_point_coord_set(m, 0, x + mx + prx, y , 0 - (rad - pry));
- evas_map_point_coord_set(m, 1, x + mx + rx , y , 0 - (rad - ry ));
- evas_map_point_coord_set(m, 2, x + mx + rx , y + h, 0 - (rad - ry ));
- evas_map_point_coord_set(m, 3, x + mx + prx, y + h, 0 - (rad - pry));
-
- evas_map_point_image_uv_set(m, 0, px , 0);
- evas_map_point_image_uv_set(m, 1, px + dst, 0);
- evas_map_point_image_uv_set(m, 2, px + dst, h);
- evas_map_point_image_uv_set(m, 3, px , h);
-
- evas_map_point_color_set(m, 0, 255, 255, 255, 255);
- evas_map_point_color_set(m, 1, 255, 255, 255, 255);
- evas_map_point_color_set(m, 2, 255, 255, 255, 255);
- evas_map_point_color_set(m, 3, 255, 255, 255, 255);
-
- evas_map_util_3d_perspective(m, x + (w / 2), y + (h / 2), 0, 512);
-
- evas_object_map_enable_set(sl->obj, 1);
- evas_object_map_set(sl->obj, m);
- evas_map_free(m);
-
+ sl = _slice_new(st);
+
+ _slice_xyz(sl,
+ mx + prx, 0, -(rad - pry),
+ mx + rx, 0, -(rad - ry),
+ mx + rx, h, -(rad - ry),
+ mx + prx, h, -(rad - pry));
+ _slice_uv(sl,
+ px, 0,
+ px + dst, 0,
+ px + dst, h,
+ px, h);
+ _slice_apply(sl, x, y, w, h);
+ st->slices = eina_list_append(st->slices, sl);
+
prx = rx;
pry = ry;
px += dst;
}
if (px < w)
{
- sl = calloc(1, sizeof(Slice));
+ sl = _slice_new(st);
+
+ _slice_xyz(sl,
+ mx + prx, 0, -(rad - pry),
+ mx + (px - w), 0, -(rad * 2),
+ mx + (px - w), h, -(rad * 2),
+ mx + prx, h, -(rad - pry));
+ _slice_uv(sl,
+ px, 0,
+ w, 0,
+ w, h,
+ px, h);
+ _slice_apply(sl, x, y, w, h);
st->slices = eina_list_append(st->slices, sl);
- sl->obj = evas_object_image_add(evas_object_evas_get(st->win));
- evas_object_image_smooth_scale_set(sl->obj, 0);
- evas_object_image_fill_set(sl->obj, 0, 0, w, h);
- evas_object_pass_events_set(sl->obj, 1);
- evas_object_image_source_set(sl->obj, st->orig);
- evas_object_show(sl->obj);
-
- m = evas_map_new(4);
- evas_map_smooth_set(m, 0);
-
- evas_map_point_coord_set(m, 0, x + mx + prx, y , 0 - (rad - pry));
- evas_map_point_coord_set(m, 1, x + mx + (px - w) , y , 0 - (rad * 2 ));
- evas_map_point_coord_set(m, 2, x + mx + (px - w) , y + h, 0 - (rad * 2 ));
- evas_map_point_coord_set(m, 3, x + mx + prx, y + h, 0 - (rad - pry));
-
- evas_map_point_image_uv_set(m, 0, px , 0);
- evas_map_point_image_uv_set(m, 1, w, 0);
- evas_map_point_image_uv_set(m, 2, w, h);
- evas_map_point_image_uv_set(m, 3, px , h);
-
- evas_map_point_color_set(m, 0, 255, 255, 255, 255);
- evas_map_point_color_set(m, 1, 255, 255, 255, 255);
- evas_map_point_color_set(m, 2, 255, 255, 255, 255);
- evas_map_point_color_set(m, 3, 255, 255, 255, 255);
-
- evas_map_util_3d_perspective(m, x + (w / 2), y + (h / 2), 0, 512);
-
- evas_object_map_enable_set(sl->obj, 1);
- evas_object_map_set(sl->obj, m);
- evas_map_free(m);
}
}
_slice_end(State *st)
{
Slice *sl;
- EINA_LIST_FREE(st->slices, sl)
- {
- evas_object_del(sl->obj);
- free(sl);
- }
- if (st->base)
- {
- evas_object_del(st->base);
- st->base = NULL;
- }
+
+ if (st->base) _slice_free(st->base);
+ st->base = NULL;
+ EINA_LIST_FREE(st->slices, sl) _slice_free(sl);
}
static void
evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
evas_object_show(bg);
-#if 1
+#if 0
im = elm_layout_add(win);
snprintf(buf, sizeof(buf), "%s/objects/test.edj", PACKAGE_DATA_DIR);
elm_layout_file_set(im, buf, "layout");
evas_object_resize(win, 480, 480);
evas_object_show(win);
+
+#ifdef PAGEMESH
+ Evas_Object *sl;
+
+ sl = elm_slider_add(win);
+ elm_slider_min_max_set(sl, -5, 5);
+ elm_slider_value_set(sl, 0);
+ sl_rho = sl;
+ evas_object_smart_callback_add(sl, "changed", _sl_ch, NULL);
+ elm_slider_label_set(sl, "rho");
+ elm_slider_unit_format_set(sl, "%1.2f");
+ elm_slider_span_size_set(sl, 320);
+ evas_object_move(sl, 10, 20);
+ evas_object_resize(sl, 460, 40);
+ evas_object_layer_set(sl, 100);
+ evas_object_show(sl);
+
+ sl = elm_slider_add(win);
+ elm_slider_min_max_set(sl, 0, 10);
+ elm_slider_value_set(sl, 7.86);
+ sl_theta = sl;
+ evas_object_smart_callback_add(sl, "changed", _sl_ch, NULL);
+ elm_slider_label_set(sl, "theta");
+ elm_slider_unit_format_set(sl, "%1.2f");
+ elm_slider_span_size_set(sl, 320);
+ evas_object_move(sl, 10, 60);
+ evas_object_resize(sl, 460, 40);
+ evas_object_layer_set(sl, 100);
+ evas_object_show(sl);
+
+ sl = elm_slider_add(win);
+ elm_slider_min_max_set(sl, -800, 800);
+ elm_slider_value_set(sl, -400);
+ sl_A = sl;
+ evas_object_smart_callback_add(sl, "changed", _sl_ch, NULL);
+ elm_slider_label_set(sl, "A");
+ elm_slider_unit_format_set(sl, "%1.2f");
+ elm_slider_span_size_set(sl, 320);
+ evas_object_move(sl, 10, 100);
+ evas_object_resize(sl, 460, 40);
+ evas_object_layer_set(sl, 100);
+ evas_object_show(sl);
+#endif
}
#endif
projects / framework / uifw / elementary.git / commitdiff