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hide key tangents in specific situations

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This commit is contained in:
Dmitry
2021-08-05 11:57:37 +03:00
parent 2abd8a5231
commit 4ec7358c51
1 changed files with 103 additions and 68 deletions
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rg3d-ui/src/curve/mod.rs
+103 -68
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@@ -6,6 +6,7 @@ use crate::{
curve::{Curve, CurveKey, CurveKeyKind},
math::{cubicf, lerpf, wrap_angle, Rect},
pool::Handle,
uuid::Uuid,
},
curve::key::CurveKeyView,
draw::{CommandTexture, Draw, DrawingContext},
@@ -19,7 +20,6 @@ use crate::{
widget::{Widget, WidgetBuilder},
BuildContext, Control, UINode, UserInterface,
};
use rg3d_core::uuid::Uuid;
use std::{
cell::Cell,
cmp::Ordering,
@@ -116,75 +116,10 @@ impl Selection {
impl<M: MessageData, C: Control<M, C>> Control<M, C> for CurveEditor<M, C> {
fn draw(&self, ctx: &mut DrawingContext) {
self.update_matrices();
let screen_bounds = self.screen_bounds();
// Draw background.
ctx.push_rect_filled(&screen_bounds, None);
ctx.commit(screen_bounds, self.background(), CommandTexture::None, None);
self.draw_background(ctx);
self.draw_grid(ctx);
self.draw_curve(ctx);
// Draw keys.
for (i, key) in self.keys.iter().enumerate() {
let origin = self.point_to_screen_space(key.position);
let size = Vector2::new(self.key_size, self.key_size);
let half_size = size.scale(0.5);
ctx.push_rect_filled(
&Rect::new(
origin.x - half_size.x,
origin.y - half_size.x,
size.x,
size.y,
),
None,
);
let mut selected = false;
if let Some(selection) = self.selection.as_ref() {
match selection {
Selection::Keys { keys } => {
selected = keys.contains(&i);
}
Selection::LeftTangent { key } | Selection::RightTangent { key } => {
selected = i == *key;
}
}
}
// Show tangents for Cubic keys.
if selected {
if let CurveKeyKind::Cubic {
left_tangent,
right_tangent,
} = key.kind
{
let left_handle_pos = self.tangent_screen_position(
wrap_angle(left_tangent.atan()) + std::f32::consts::PI,
key.position,
);
ctx.push_line(origin, left_handle_pos, 1.0);
ctx.push_circle(left_handle_pos, self.key_size * 0.5, 6, Default::default());
let right_handle_pos = self
.tangent_screen_position(wrap_angle(right_tangent.atan()), key.position);
ctx.push_line(origin, right_handle_pos, 1.0);
ctx.push_circle(right_handle_pos, self.key_size * 0.5, 6, Default::default());
}
}
ctx.commit(
screen_bounds,
if selected {
self.selected_key_brush.clone()
} else {
self.key_brush.clone()
},
CommandTexture::None,
None,
);
}
self.draw_keys(ctx);
}
fn handle_routed_message(
@@ -642,6 +577,13 @@ impl<M: MessageData, C: Control<M, C>> CurveEditor<M, C> {
));
}
fn draw_background(&self, ctx: &mut DrawingContext) {
let screen_bounds = self.screen_bounds();
// Draw background.
ctx.push_rect_filled(&screen_bounds, None);
ctx.commit(screen_bounds, self.background(), CommandTexture::None, None);
}
// TODO: Fix.
fn draw_grid(&self, ctx: &mut DrawingContext) {
let screen_bounds = self.screen_bounds();
@@ -755,6 +697,99 @@ impl<M: MessageData, C: Control<M, C>> CurveEditor<M, C> {
}
ctx.commit(screen_bounds, self.foreground(), CommandTexture::None, None);
}
fn draw_keys(&self, ctx: &mut DrawingContext) {
let screen_bounds = self.screen_bounds();
for (i, key) in self.keys.iter().enumerate() {
let origin = self.point_to_screen_space(key.position);
let size = Vector2::new(self.key_size, self.key_size);
let half_size = size.scale(0.5);
ctx.push_rect_filled(
&Rect::new(
origin.x - half_size.x,
origin.y - half_size.x,
size.x,
size.y,
),
None,
);
let mut selected = false;
if let Some(selection) = self.selection.as_ref() {
match selection {
Selection::Keys { keys } => {
selected = keys.contains(&i);
}
Selection::LeftTangent { key } | Selection::RightTangent { key } => {
selected = i == *key;
}
}
}
// Show tangents for Cubic keys.
if selected {
let (show_left, show_right) = match self.keys.get(i.wrapping_sub(1)) {
Some(left) => match (&left.kind, &key.kind) {
(CurveKeyKind::Cubic { .. }, CurveKeyKind::Cubic { .. }) => (true, true),
(CurveKeyKind::Linear, CurveKeyKind::Cubic { .. })
| (CurveKeyKind::Constant, CurveKeyKind::Cubic { .. }) => (false, true),
_ => (false, false),
},
None => match key.kind {
CurveKeyKind::Cubic { .. } => (false, true),
_ => ((false, false)),
},
};
if let CurveKeyKind::Cubic {
left_tangent,
right_tangent,
} = key.kind
{
if show_left {
let left_handle_pos = self.tangent_screen_position(
wrap_angle(left_tangent.atan()) + std::f32::consts::PI,
key.position,
);
ctx.push_line(origin, left_handle_pos, 1.0);
ctx.push_circle(
left_handle_pos,
self.key_size * 0.5,
6,
Default::default(),
);
}
if show_right {
let right_handle_pos = self.tangent_screen_position(
wrap_angle(right_tangent.atan()),
key.position,
);
ctx.push_line(origin, right_handle_pos, 1.0);
ctx.push_circle(
right_handle_pos,
self.key_size * 0.5,
6,
Default::default(),
);
}
}
}
ctx.commit(
screen_bounds,
if selected {
self.selected_key_brush.clone()
} else {
self.key_brush.clone()
},
CommandTexture::None,
None,
);
}
}
}
pub struct CurveEditorBuilder<M: MessageData, C: Control<M, C>> {