static int tool_set_plane_iter(goxel_t *goxel, const inputs_t *inputs,
int state, const vec2_t *view_size,
bool inside)
{
bool snaped;
vec3_t pos, normal;
mesh_t *mesh = goxel->layers_mesh;
const bool pressed = inputs->mouse_down[0];
goxel_set_help_text(goxel, "Click on the mesh to set plane.");
snaped = inside && goxel_unproject_on_mesh(goxel, view_size,
&inputs->mouse_pos, mesh, &pos, &normal);
if (snaped && pressed) {
vec3_iadd(&pos, normal);
goxel->plane = plane_from_normal(pos, normal);
}
return 0;
}
box_t block_get_box(const block_t *block, bool exact)
{
box_t ret;
int x, y, z;
int xmin = N, xmax = 0, ymin = N, ymax = 0, zmin = N, zmax = 0;
if (!exact)
return bbox_from_extents(block->pos, N / 2, N / 2, N / 2);
BLOCK_ITER(x, y, z) {
if (BLOCK_AT(block, x, y, z).a) {
xmin = min(xmin, x);
ymin = min(ymin, y);
zmin = min(zmin, z);
xmax = max(xmax, x);
ymax = max(ymax, y);
zmax = max(zmax, z);
}
}
if (xmin > xmax) return box_null();
ret = bbox_from_points(vec3(xmin - 0.5, ymin - 0.5, zmin - 0.5),
vec3(xmax + 0.5, ymax + 0.5, zmax + 0.5));
vec3_iadd(&ret.p, block->pos);
vec3_isub(&ret.p, vec3(N / 2 - 0.5, N / 2 - 0.5, N / 2 - 0.5));
return ret;
}
static int tool_cube_iter(goxel_t *goxel, const inputs_t *inputs, int state,
const vec2_t *view_size, bool inside)
{
const bool down = inputs->mouse_down[0];
const bool up = !down;
int snaped = 0;
vec3_t pos, normal;
box_t box;
uvec4b_t box_color = HEXCOLOR(0xffff00ff);
mesh_t *mesh = goxel->image->active_layer->mesh;
if (inside)
snaped = goxel_unproject(goxel, view_size, &inputs->mouse_pos,
&pos, &normal);
if (snaped) {
if ( snaped == SNAP_MESH && goxel->painter.op == OP_ADD &&
!goxel->snap_offset)
vec3_iadd(&pos, normal);
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;
if (snaped) state = STATE_SNAPED;
}
if (state == STATE_SNAPED) {
if (goxel->tool_t == 0) {
goxel->tool_t = 1;
mesh_set(&goxel->tool_origin_mesh, mesh);
}
if (!snaped) return STATE_CANCEL;
goxel_set_help_text(goxel, "Click and drag to draw.");
goxel->tool_start_pos = pos;
box = get_box(&goxel->tool_start_pos, &pos, &normal, 0,
&goxel->plane);
mesh_set(&mesh, goxel->tool_origin_mesh);
mesh_op(mesh, &goxel->painter, &box);
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.");
box = get_box(&goxel->tool_start_pos, &pos, &normal, 0, &goxel->plane);
render_box(&goxel->rend, &box, false, &box_color, false);
mesh_set(&mesh, goxel->tool_origin_mesh);
mesh_op(mesh, &goxel->painter, &box);
goxel_update_meshes(goxel, false);
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));
box = get_box(&goxel->tool_start_pos, &pos, &normal, 0,
&goxel->plane);
render_box(&goxel->rend, &box, false, &box_color, false);
mesh_set(&mesh, goxel->tool_origin_mesh);
mesh_op(mesh, &goxel->painter, &box);
goxel_update_meshes(goxel, false);
if (down) {
mesh_set(&mesh, goxel->tool_origin_mesh);
mesh_op(mesh, &goxel->painter, &box);
goxel_update_meshes(goxel, true);
goxel->painting = false;
image_history_push(goxel->image);
return STATE_WAIT_UP;
}
}
if (state == STATE_WAIT_UP) {
goxel->tool_plane = plane_null;
if (up) state = STATE_IDLE;
}
return state;
}
static int tool_brush_iter(goxel_t *goxel, const inputs_t *inputs, int state,
const vec2_t *view_size, bool inside)
{
const bool down = inputs->mouse_down[0];
const bool pressed = down && !goxel->painting;
const bool released = !down && goxel->painting;
int snaped = 0;
vec3_t pos, normal;
box_t box;
painter_t painter2;
mesh_t *mesh = goxel->image->active_layer->mesh;
if (inside)
snaped = goxel_unproject(goxel, view_size, &inputs->mouse_pos,
&pos, &normal);
goxel_set_help_text(goxel, "Brush: use shift to draw lines, "
"ctrl to pick color");
if (snaped) {
if ( snaped == SNAP_MESH && goxel->painter.op == OP_ADD &&
!goxel->snap_offset)
vec3_iadd(&pos, normal);
if (goxel->tool == TOOL_BRUSH && goxel->snap_offset)
vec3_iaddk(&pos, normal, goxel->snap_offset * goxel->tool_radius);
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;
if (snaped) state = STATE_SNAPED;
}
if (state == STATE_SNAPED) {
if (goxel->tool_t == 0) {
goxel->tool_t = 1;
mesh_set(&goxel->tool_origin_mesh, mesh);
if (!inputs->keys[KEY_SHIFT])
mesh_set(&goxel->pick_mesh, goxel->layers_mesh);
goxel->tool_last_op.op = 0; // Discard last op.
}
if (!snaped) return STATE_CANCEL;
if (inputs->keys[KEY_SHIFT])
render_line(&goxel->rend, &goxel->tool_start_pos, &pos, NULL);
if (check_can_skip(goxel, pos, down, goxel->painter.op))
return state;
box = get_box(&pos, NULL, &normal, goxel->tool_radius, NULL);
mesh_set(&mesh, goxel->tool_origin_mesh);
mesh_op(mesh, &goxel->painter, &box);
goxel_update_meshes(goxel, false);
if (inputs->keys[KEY_SHIFT]) {
render_line(&goxel->rend, &goxel->tool_start_pos, &pos, NULL);
if (pressed) {
painter2 = goxel->painter;
painter2.shape = &shape_cylinder;
box = get_box(&goxel->tool_start_pos, &pos, &normal,
goxel->tool_radius, NULL);
mesh_op(mesh, &painter2, &box);
goxel_update_meshes(goxel, false);
goxel->tool_start_pos = pos;
mesh_set(&goxel->tool_origin_mesh, mesh);
}
}
if (pressed) {
mesh_set(&mesh, goxel->tool_origin_mesh);
state = STATE_PAINT;
goxel->tool_last_op.op = 0;
goxel->painting = true;
}
}
if (state == STATE_PAINT) {
if (check_can_skip(goxel, pos, down, goxel->painter.op))
return state;
if (released) {
image_history_push(goxel->image);
goxel->painting = false;
goxel->last_pos = pos;
if (inputs->keys[KEY_SHIFT])
return STATE_WAIT_KEY_UP;
mesh_set(&goxel->pick_mesh, goxel->layers_mesh);
return STATE_IDLE;
}
box = get_box(&pos, NULL, &normal, goxel->tool_radius, NULL);
mesh_op(mesh, &goxel->painter, &box);
goxel_update_meshes(goxel, false);
goxel->tool_start_pos = pos;
}
if (state == STATE_WAIT_KEY_UP) {
goxel->tool_t = 0;
if (!inputs->keys[KEY_SHIFT]) state = STATE_IDLE;
if (snaped) state = STATE_SNAPED;
}
return state;
}