Point2 TextureProgress::unit_val_to_uv(float val) {
if (progress.is_null())
return Point2();
if (val < 0)
val += 1;
if (val > 1)
val -= 1;
Point2 p = get_relative_center();
if (val < 0.125)
return Point2(p.x + (1 - p.x) * val * 8, 0);
if (val < 0.25)
return Point2(1, p.y * (val - 0.125) * 8);
if (val < 0.375)
return Point2(1, p.y + (1 - p.y) * (val - 0.25) * 8);
if (val < 0.5)
return Point2(1 - (1 - p.x) * (val - 0.375) * 8, 1);
if (val < 0.625)
return Point2(p.x * (1 - (val - 0.5) * 8), 1);
if (val < 0.75)
return Point2(0, 1 - ((1 - p.y) * (val - 0.625) * 8));
if (val < 0.875)
return Point2(0, p.y - p.y * (val - 0.75) * 8);
else
return Point2(p.x * (val - 0.875) * 8, 0);
}
Point2 TextureProgress::unit_val_to_uv(float val) {
if (progress.is_null())
return Point2();
if (val < 0)
val += 1;
if (val > 1)
val -= 1;
Point2 p = get_relative_center();
// Minimal version of Liang-Barsky clipping algorithm
float angle = (val * Math_TAU) - Math_PI * 0.5;
Point2 dir = Vector2(Math::cos(angle), Math::sin(angle));
float t1 = 1.0;
float cp;
float cq;
float cr;
float edgeLeft = 0.0;
float edgeRight = 1.0;
float edgeBottom = 0.0;
float edgeTop = 1.0;
for (int edge = 0; edge < 4; edge++) {
if (edge == 0) {
if (dir.x > 0)
continue;
cp = -dir.x;
cq = -(edgeLeft - p.x);
} else if (edge == 1) {
if (dir.x < 0)
continue;
cp = dir.x;
cq = (edgeRight - p.x);
} else if (edge == 2) {
if (dir.y > 0)
continue;
cp = -dir.y;
cq = -(edgeBottom - p.y);
} else if (edge == 3) {
if (dir.y < 0)
continue;
cp = dir.y;
cq = (edgeTop - p.y);
}
cr = cq / cp;
if (cr >= 0 && cr < t1)
t1 = cr;
}
return (p + t1 * dir);
}
void TextureProgress::_notification(int p_what) {
const float corners[12] = { -0.125, -0.375, -0.625, -0.875, 0.125, 0.375, 0.625, 0.875, 1.125, 1.375, 1.625, 1.875 };
switch (p_what) {
case NOTIFICATION_DRAW: {
if (nine_patch_stretch && (mode == FILL_LEFT_TO_RIGHT || mode == FILL_RIGHT_TO_LEFT || mode == FILL_TOP_TO_BOTTOM || mode == FILL_BOTTOM_TO_TOP)) {
if (under.is_valid()) {
draw_nine_patch_stretched(under, FILL_LEFT_TO_RIGHT, 1.0, tint_under);
}
if (progress.is_valid()) {
draw_nine_patch_stretched(progress, mode, get_as_ratio(), tint_progress);
}
if (over.is_valid()) {
draw_nine_patch_stretched(over, FILL_LEFT_TO_RIGHT, 1.0, tint_over);
}
} else {
if (under.is_valid())
draw_texture(under, Point2(), tint_under);
if (progress.is_valid()) {
Size2 s = progress->get_size();
switch (mode) {
case FILL_LEFT_TO_RIGHT: {
Rect2 region = Rect2(Point2(), Size2(s.x * get_as_ratio(), s.y));
draw_texture_rect_region(progress, region, region, tint_progress);
} break;
case FILL_RIGHT_TO_LEFT: {
Rect2 region = Rect2(Point2(s.x - s.x * get_as_ratio(), 0), Size2(s.x * get_as_ratio(), s.y));
draw_texture_rect_region(progress, region, region, tint_progress);
} break;
case FILL_TOP_TO_BOTTOM: {
Rect2 region = Rect2(Point2(), Size2(s.x, s.y * get_as_ratio()));
draw_texture_rect_region(progress, region, region, tint_progress);
} break;
case FILL_BOTTOM_TO_TOP: {
Rect2 region = Rect2(Point2(0, s.y - s.y * get_as_ratio()), Size2(s.x, s.y * get_as_ratio()));
draw_texture_rect_region(progress, region, region, tint_progress);
} break;
case FILL_CLOCKWISE:
case FILL_COUNTER_CLOCKWISE:
case FILL_CLOCKWISE_AND_COUNTER_CLOCKWISE: {
float val = get_as_ratio() * rad_max_degrees / 360;
if (val == 1) {
Rect2 region = Rect2(Point2(), s);
draw_texture_rect_region(progress, region, region, tint_progress);
} else if (val != 0) {
Array pts;
float direction = mode == FILL_COUNTER_CLOCKWISE ? -1 : 1;
float start;
if (mode == FILL_CLOCKWISE_AND_COUNTER_CLOCKWISE) {
start = rad_init_angle / 360 - val / 2;
} else {
start = rad_init_angle / 360;
}
float end = start + direction * val;
pts.append(start);
pts.append(end);
float from = MIN(start, end);
float to = MAX(start, end);
for (int i = 0; i < 12; i++)
if (corners[i] > from && corners[i] < to)
pts.append(corners[i]);
pts.sort();
Vector<Point2> uvs;
Vector<Point2> points;
uvs.push_back(get_relative_center());
points.push_back(Point2(s.x * get_relative_center().x, s.y * get_relative_center().y));
for (int i = 0; i < pts.size(); i++) {
Point2 uv = unit_val_to_uv(pts[i]);
if (uvs.find(uv) >= 0)
continue;
uvs.push_back(uv);
points.push_back(Point2(uv.x * s.x, uv.y * s.y));
}
Vector<Color> colors;
colors.push_back(tint_progress);
draw_polygon(points, colors, uvs, progress);
}
if (Engine::get_singleton()->is_editor_hint()) {
Point2 p = progress->get_size();
p.x *= get_relative_center().x;
p.y *= get_relative_center().y;
p = p.floor();
draw_line(p - Point2(8, 0), p + Point2(8, 0), Color(0.9, 0.5, 0.5), 2);
draw_line(p - Point2(0, 8), p + Point2(0, 8), Color(0.9, 0.5, 0.5), 2);
}
} break;
case FILL_BILINEAR_LEFT_AND_RIGHT: {
Rect2 region = Rect2(Point2(s.x / 2 - s.x * get_as_ratio() / 2, 0), Size2(s.x * get_as_ratio(), s.y));
draw_texture_rect_region(progress, region, region, tint_progress);
} break;
case FILL_BILINEAR_TOP_AND_BOTTOM: {
Rect2 region = Rect2(Point2(0, s.y / 2 - s.y * get_as_ratio() / 2), Size2(s.x, s.y * get_as_ratio()));
draw_texture_rect_region(progress, region, region, tint_progress);
} break;
default:
draw_texture_rect_region(progress, Rect2(Point2(), Size2(s.x * get_as_ratio(), s.y)), Rect2(Point2(), Size2(s.x * get_as_ratio(), s.y)), tint_progress);
}
}
if (over.is_valid())
draw_texture(over, Point2(), tint_over);
}
} break;
}
}
