1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
#include "extantz.h"
#include "evas_3d_utils.h"
static inline void evas_euler_to_quaternion(Evas_Vec4 *out, Evas_Vec3 *in)
{
// Assuming the angles are in radians.
Evas_Real c1 = cos(in->y / 2.0); // heading (yaw/spin) .. y
Evas_Real s1 = sin(in->y / 2.0);
Evas_Real c2 = cos(in->z / 2.0); // attitude (pitch) .. x
Evas_Real s2 = sin(in->z / 2.0);
Evas_Real c3 = cos(in->x / 2.0); // bank (roll) .. z
Evas_Real s3 = sin(in->x / 2.0);
Evas_Real c1c2 = c1 * c2;
Evas_Real s1s2 = s1 * s2;
out->w =c1c2 * c3 - s1s2 * s3;
out->x =c1c2 * s3 + s1s2 * c3;
out->y =s1 * c2 * c3 + c1 * s2 * s3;
out->z =c1 * s2 * c3 - s1 * c2 * s3;
}
static inline void evas_quaternion_normalise(Evas_Vec4 *in)
{
Evas_Real n = sqrt(in->x * in->x + in->y * in->y + in->z * in->z + in->w * in->w);
in->x /= n;
in->y /= n;
in->z /= n;
in->w /= n;
}
static inline void evas_quaternion_multiply(Evas_Vec4 *out, const Evas_Vec4 *q1, const Evas_Vec4 *q2)
{
out->x = q1->x * q2->w + q1->y * q2->z - q1->z * q2->y + q1->w * q2->x;
out->y = -q1->x * q2->z + q1->y * q2->w + q1->z * q2->x + q1->w * q2->y;
out->z = q1->x * q2->y - q1->y * q2->x + q1->z * q2->w + q1->w * q2->z;
out->w = -q1->x * q2->x - q1->y * q2->y - q1->z * q2->z + q1->w * q2->w;
}
static inline void evas_quaternion_conjugate(Evas_Vec4 *in)
{
in->x = -in->x;
in->y = -in->y;
in->z = -in->z;
in->w = in->w;
}
Eina_Bool animateCamera(Scene_Data *scene)
{
Evas_Vec3 pos, rotate;
Evas_Vec4 orient, rotateQ, result, move;
evas_vec3_set(&rotate, DEGREE_TO_RADIAN(scene->move->r), DEGREE_TO_RADIAN(scene->move->s), DEGREE_TO_RADIAN(scene->move->p));
eo_do(scene->camera_node, evas_3d_node_orientation_get(EVAS_3D_SPACE_PARENT, &orient.x, &orient.y, &orient.z, &orient.w));
evas_euler_to_quaternion(&rotateQ, &rotate);
evas_quaternion_multiply(&result, &orient, &rotateQ);
evas_quaternion_normalise(&result);
eo_do(scene->camera_node, evas_3d_node_orientation_set(result.x, result.y, result.z, result.w));
evas_vec4_set(&move, scene->move->x, scene->move->y, scene->move->z, 0);
eo_do(scene->camera_node, evas_3d_node_position_get(EVAS_3D_SPACE_PARENT, &pos.x, &pos.y, &pos.z));
evas_quaternion_multiply(&rotateQ, &result, &move);
evas_quaternion_conjugate(&result);
evas_quaternion_multiply(&move, &rotateQ, &result);
pos.x += move.x;
pos.y += move.y;
pos.z += move.z;
eo_do(scene->camera_node, evas_3d_node_position_set(pos.x, pos.y, pos.z));
return EINA_TRUE;
}
static void _on_camera_input_down(void *data, Evas *evas, Evas_Object *obj, void *event_info)
{
cameraMove *move = data;
Evas_Event_Key_Down *ev = event_info;
if (move)
{
// TODO - Careful, gld->move MIGHT be read at the other end by another thread. MIGHT, coz I really don't know at what point the camera animate routine is actually called.
// Yes, we are dealing with the horrid Evas keyboard handling FUCKING STRING COMPARES! Soooo ...
// TODO - make this a hash lookup dammit.
if (0 == strcmp(ev->key, "Escape"))
{
}
else if (0 == strcmp(ev->key, "Left")) move->s = 2.0;
else if (0 == strcmp(ev->key, "Right")) move->s = -2.0;
else if (0 == strcmp(ev->key, "Up")) move->z = -2.0;
else if (0 == strcmp(ev->key, "Down")) move->z = 2.0;
else if (0 == strcmp(ev->key, "Prior")) move->y = 2.0; // Pg Up for humans.
else if (0 == strcmp(ev->key, "Next")) move->y = -2.0; // Pg Dn for humans.
else if (0 == strcmp(ev->key, "Home")) move->x = -2.0;
else if (0 == strcmp(ev->key, "End")) move->x = 2.0;
else if (0 == strcmp(ev->key, "space")) move->jump = 1.0;
else printf("Unexpected down keystroke - %s\n", ev->key);
}
else printf("Camera input not ready\n");
}
/* SL / OS camera controls
* up / down / w / s moves avatar forward / backward
* shifted version does the same
* double tap triggers run mode / or fast fly mode
* Running backwards turns your avatar to suit, walking does not.
* left / right / a / d rotates avatar left / right, strafes in mouselook
* shifted version turns the avatar to walk sideways, so not really a strafe.
* So not sure if the "strafe" in mouse look turns the avatar as well?
* PgDn / c crouch while it is held down move up in flight mode
* PgUp jump move down in flight mode
* Home toggle flying
* End Nothing?
* Esc return to third person view
* m toggle mouse look
* mouse wheel move view closer / further away from current focused object or avatar
* Alt left click focus on some other object
* Ins ???
* Del ???
* BS ???
* Tab ???
*
* Mouse look is just first person view, moving mouse looks left / right / up / down.
* Not sure if the avatar rotates with left / right, but that's likely.
*
* mouse moves With the left mouse button held down -
* left / right up / down
* ---------------------------------
* for avatar swings avatar around zoom in and out of avatar
* for object nothing
* alt orbit left / right zoom in and out
* alt ctrl orbit left / right orbit up / down
* alt shift orbit left / right zoom in and out
* alt ctrl shift shift view left / right / up / down
* ctrl Nothing?
* shift Nothing?
* ctrl shift Nothing?
*
* Need to also consider when looking at a moving object / avatar.
*
* I think there are other letter keys that duplicate arrow keys and such. I'll look for them later, but I don't use them.
* No idea what the function keys are mapped to, but think it's various non camera stuff.
* I'm damn well leaving the Win/Command and Menu keys for the OS / window manager. lol
* Keypad keys? Not interested, I don't have them.
* Print Screen / SysRq, Pause / Break, other oddball keys, also not interested.
* NOTE - gonna have an easily programmable "bind key to command" thingy, like E17s, so that can deal with other keys.
* Should even let them be saveable so people can swap them with other people easily.
*
* TODO - implement things like space mouse, sixaxis, phone as controller, joysticks, data gloves, etc.
*/
/* A moveRotate array of floats.
* X, Y, Z, and whatever the usual letters are for rotations. lol
* Each one means "move or rotate this much in this direction".
* Where 1.0 means "what ever the standard move is if that key is held down".
* So a keyboard move would just change it's part to 1.0 or -1.0 on key down,
* and back to 0.0 on key up. Or 2.0 / -2.0 if in run mode.
* Which would even work in fly mode.
* A joystick could be set to range over -2.0 to 2.0, and just set it's part directly.
* A mouse look rotate, well will come to that when we need to. B-)
* Setting the x or y to be the DIFFERENCE in window position of the mouse (-1.0 to 1.0) since the last frame.
*
* TODO - In the Elm_glview version, 2.0 seems to be correct speed for walking, but I thought 1.0 was in Evas_GL.
*/
static void _on_camera_input_up(void *data, Evas *evas, Evas_Object *obj, void *event_info)
{
cameraMove *move = data;
Evas_Event_Key_Up *ev = event_info;
if (move)
{
// TODO - Careful, gld->move MIGHT be read at the other end by another thread. MIGHT, coz I really don't know at what point the camera animate routine is actually called.
// Yes, we are dealing with the horrid Evas keyboard handling FUCKING STRING COMPARES! Soooo ...
// TODO - make this a hash lookup dammit.
if (0 == strcmp(ev->key, "Escape"))
{
}
else if (0 == strcmp(ev->key, "Left")) move->s = 0.0;
else if (0 == strcmp(ev->key, "Right")) move->s = 0.0;
else if (0 == strcmp(ev->key, "Up")) move->z = 0.0;
else if (0 == strcmp(ev->key, "Down")) move->z = 0.0;
else if (0 == strcmp(ev->key, "Prior")) move->y = 0.0;
else if (0 == strcmp(ev->key, "Next")) move->y = 0.0;
else if (0 == strcmp(ev->key, "Home")) move->x = 0.0;
else if (0 == strcmp(ev->key, "End")) move->x = 0.0;
else if (0 == strcmp(ev->key, "space")) move->jump = 0.0;
else printf("Unexpected up keystroke - %s\n", ev->key);
}
else printf("Camera input not ready\n");
}
/* While it's true that image is an Elm image, seems this Elm input event callback doesn't work.
// Elm style event callback.
static Eina_Bool _cb_event_GL(void *data, Evas_Object *obj, Evas_Object *src, Evas_Callback_Type type, void *event_info)
{
Eina_Bool processed = EINA_FALSE;
switch (type)
{
case EVAS_CALLBACK_KEY_DOWN :
{
_on_camera_input_down(data, evas_object_evas_get(obj), obj, event_info);
processed = EINA_TRUE;
break;
}
case EVAS_CALLBACK_KEY_UP :
{
_on_camera_input_up(data, evas_object_evas_get(obj), obj, event_info);
processed = EINA_TRUE;
break;
}
default :
printf("Unknown GL input event.\n");
}
return processed;
}
*/
Evas_3D_Node *cameraAdd(Evas *evas, Scene_Data *scene, Evas_Object *image)
{
Evas_3D_Node *result = NULL;
Evas_3D_Camera *camera;
camera = eo_add(EVAS_3D_CAMERA_CLASS, evas,
evas_3d_camera_projection_perspective_set(90.0, 1.0, 1.0, 1024.0)
);
result = eo_add_custom(EVAS_3D_NODE_CLASS, evas, evas_3d_node_constructor(EVAS_3D_NODE_TYPE_CAMERA),
evas_3d_node_camera_set(camera),
evas_3d_node_position_set(0.0, 20.0, 30.0),
// evas_3d_node_look_at_set(EVAS_3D_SPACE_PARENT, 0.0, 0.0, 20.0, EVAS_3D_SPACE_PARENT, 0.0, 1.0, 0.0)
evas_3d_node_orientation_set(0.0, 0.0, 0.0, 1.0)
);
eo_do(scene->root_node, evas_3d_node_member_add(result));
eo_do(scene->scene, evas_3d_scene_camera_node_set(result));
scene->move = calloc(1, sizeof(cameraMove));
// In this code, we are making our own camera, so grab it's input when we are focused.
evas_object_event_callback_add(image, EVAS_CALLBACK_KEY_DOWN, _on_camera_input_down, scene->move);
evas_object_event_callback_add(image, EVAS_CALLBACK_KEY_UP, _on_camera_input_up, scene->move);
// While it's true that image is an Elm image, seems this Elm input event callback doesn't work.
// elm_object_event_callback_add(image, _cb_event_GL, NULL);
return result;
}
|
