static void do_move(layer_t *layer, const float mat[4][4])
{
float m[4][4];
mat4_set_identity(m);
// Change referential to the mesh origin.
// XXX: maybe this should be done in mesh_move directy??
mat4_itranslate(m, -0.5, -0.5, -0.5);
mat4_imul(m, mat);
mat4_itranslate(m, +0.5, +0.5, +0.5);
if (layer->base_id || layer->image) {
mat4_mul(mat, layer->mat, layer->mat);
layer->base_mesh_key = 0;
} else {
mesh_move(layer->mesh, m);
if (!box_is_null(layer->box)) {
mat4_mul(mat, layer->box, layer->box);
box_get_bbox(layer->box, layer->box);
}
}
goxel_update_meshes(goxel, -1);
}
// XXX: this is very close to tool_cube_iter.
static int tool_selection_iter(goxel_t *goxel, const inputs_t *inputs,
int state, const vec2_t *view_size,
bool inside)
{
extern const mat4_t FACES_MATS[6];
const bool down = inputs->mouse_down[0];
const bool up = !down;
int snaped = 0;
int face = -1;
vec3_t pos, normal;
plane_t face_plane;
box_t box;
uvec4b_t box_color = HEXCOLOR(0xffff00ff);
// See if we can snap on a selection face.
if (inside && !box_is_null(goxel->selection) &&
IS_IN(state, STATE_IDLE, STATE_SNAPED, STATE_SNAPED_FACE)) {
goxel->tool_snape_face = -1;
if (goxel_unproject_on_box(goxel, view_size, &inputs->mouse_pos,
&goxel->selection, &pos, &normal, &face)) {
goxel->tool_snape_face = face;
state = STATE_SNAPED_FACE;
}
}
if (!box_is_null(goxel->selection) && goxel->tool_snape_face != -1)
face_plane.mat = mat4_mul(goxel->selection.mat,
FACES_MATS[goxel->tool_snape_face]);
if (inside && face == -1)
snaped = goxel_unproject(goxel, view_size, &inputs->mouse_pos,
&pos, &normal);
if (snaped) {
pos.x = round(pos.x - 0.5) + 0.5;
pos.y = round(pos.y - 0.5) + 0.5;
pos.z = round(pos.z - 0.5) + 0.5;
}
if (state == STATE_IDLE) {
goxel->tool_t = 0;
goxel->tool_snape_face = -1;
if (snaped) state = STATE_SNAPED;
}
if (state == STATE_SNAPED) {
if (!snaped) return STATE_CANCEL;
goxel_set_help_text(goxel, "Click and drag to set selection.");
goxel->tool_start_pos = pos;
box = get_box(&goxel->tool_start_pos, &pos, &normal, 0,
&goxel->plane);
render_box(&goxel->rend, &box, false, &box_color, false);
if (down) {
state = STATE_PAINT;
goxel->painting = true;
}
}
if (state == STATE_PAINT) {
goxel_set_help_text(goxel, "Drag.");
goxel->selection = get_box(&goxel->tool_start_pos, &pos, &normal, 0,
&goxel->plane);
if (up) {
state = STATE_PAINT2;
goxel->tool_plane = plane_from_normal(pos, goxel->plane.u);
}
}
if (state == STATE_PAINT2) {
goxel_set_help_text(goxel, "Adjust height.");
render_plane(&goxel->rend, &goxel->tool_plane, &goxel->grid_color);
pos = vec3_add(goxel->tool_plane.p,
vec3_project(vec3_sub(pos, goxel->tool_plane.p),
goxel->plane.n));
goxel->selection = get_box(&goxel->tool_start_pos, &pos, &normal, 0,
&goxel->plane);
if (down) {
goxel->painting = false;
return STATE_WAIT_UP;
}
}
if (state == STATE_WAIT_UP) {
goxel->tool_plane = plane_null;
goxel->selection = box_get_bbox(goxel->selection);
return up ? STATE_IDLE : STATE_WAIT_UP;
}
if (IS_IN(state, STATE_SNAPED_FACE, STATE_MOVE_FACE))
goxel_set_help_text(goxel, "Drag to move face");
if (state == STATE_SNAPED_FACE) {
if (face == -1) return STATE_IDLE;
render_img(&goxel->rend, NULL, &face_plane.mat);
if (down) {
state = STATE_MOVE_FACE;
goxel->tool_plane = plane(pos, normal,
vec3_normalized(face_plane.u));
}
}
if (state == STATE_MOVE_FACE) {
if (up) return STATE_IDLE;
goxel_unproject_on_plane(goxel, view_size, &inputs->mouse_pos,
&goxel->tool_plane, &pos, &normal);
pos = vec3_add(goxel->tool_plane.p,
vec3_project(vec3_sub(pos, goxel->tool_plane.p),
vec3_normalized(face_plane.n)));
pos.x = round(pos.x);
pos.y = round(pos.y);
pos.z = round(pos.z);
goxel->selection = box_move_face(goxel->selection,
goxel->tool_snape_face, pos);
}
return state;
}