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Plane-constrained translation handles

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Danny McGee
2023-10-11 20:48:21 -04:00
parent fef5840343
commit 7d121af4a1
5 changed files with 127 additions and 39 deletions
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studio/src/interaction/gizmos.rs
+59 -29
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@@ -2,7 +2,7 @@ use std::f32::consts;
use bevy::{prelude::*, window::PrimaryWindow};
use crate::design_system;
use crate::{design_system, math::Lerp};
use super::{InteractionMode, InteractionTransform, Selected, TransformSpace};
@@ -50,7 +50,7 @@ pub(super) fn draw(
};
if mode.transform.contains(InteractionTransform::TRANSLATE) {
draw_translate_gizmo(&mut gizmos, variant, &xform, mode.space, size);
draw_translate_gizmo(&mut gizmos, variant, &xform, camera_xform, mode.space, size);
}
if mode.transform.contains(InteractionTransform::ROTATE) {
draw_rotate_gizmo(&mut gizmos, variant, &xform, camera_xform, mode.space, size);
@@ -67,6 +67,7 @@ fn draw_translate_gizmo(
gizmos: &mut Gizmos,
variant: GizmoVariant,
xform: &Transform,
camera_xform: &Transform,
space: TransformSpace,
size: f32,
) {
@@ -76,36 +77,65 @@ fn draw_translate_gizmo(
TransformSpace::World => &Transform::IDENTITY,
};
match variant {
GizmoVariant::Full => {
gizmos.sphere(origin, Quat::IDENTITY, size * 0.125, Color::WHITE);
gizmos.circle(origin, camera_xform.forward(), size * 0.2, Color::WHITE);
for (direction, color) in [
(basis.local_x(), design_system::Color::RED),
(basis.local_y(), design_system::Color::GREEN),
(basis.local_z(), design_system::Color::BLUE),
] {
let end = origin + direction * size * 1.4;
gizmos.line(origin, end, color);
for (direction, mut color) in [
(basis.local_x(), design_system::Color::RED),
(basis.local_y(), design_system::Color::GREEN),
(basis.local_z(), design_system::Color::BLUE),
] {
let alpha = (1. - Vec3::dot(camera_xform.forward(), direction).abs())
.remap((0., 0.1), (0., 1.))
.clamp(0., 1.);
let cone_base = origin + direction * size;
let radius = size * 0.1;
let length = size * 0.4;
gizmos.cone(cone_base, direction, radius, length, color);
color = color.with_a(alpha);
let cone_base = match variant {
GizmoVariant::Full => {
let start = origin + direction * size * 0.25;
let end = origin + direction * size * 1.6;
gizmos.line(start, end, color);
let midpoint_self = origin + ((end - origin) / 2.);
let (ortho, mut color_ortho) = get_ortho(basis, direction);
let ortho_alpha = (1. - Vec3::dot(camera_xform.forward(), ortho).abs())
.remap((0., 0.1), (0., 1.))
.clamp(0., 1.);
color_ortho = color_ortho.with_a(f32::min(ortho_alpha, alpha));
let ortho_end = origin + ortho * size * 1.6;
let midpoint_ortho = origin + ((ortho_end - origin) / 2.);
gizmos.line_gradient(midpoint_self, midpoint_ortho, color, color_ortho);
origin + direction * size * 1.2
}
}
GizmoVariant::Partial => {
for (direction, color) in [
(basis.local_x(), design_system::Color::RED),
(basis.local_y(), design_system::Color::GREEN),
(basis.local_z(), design_system::Color::BLUE),
] {
let cone_base = origin + direction * size * 1.4;
let radius = size * 0.1;
let length = size * 0.4;
gizmos.cone(cone_base, direction, radius, length, color);
}
}
GizmoVariant::Partial => origin + direction * size * 1.4,
};
let radius = size * 0.1;
let length = size * 0.4;
gizmos.cone(cone_base, direction, radius, length, color);
}
}
#[inline]
fn get_ortho(xform: &Transform, compare: Vec3) -> (Vec3, Color) {
let x = xform.local_x();
let y = xform.local_y();
let z = xform.local_z();
let diff_x = (compare - x).length_squared();
let diff_y = (compare - y).length_squared();
let diff_z = (compare - z).length_squared();
if diff_x < diff_y && diff_x < diff_z {
(y, design_system::Color::GREEN)
} else if diff_y < diff_x && diff_y < diff_z {
(z, design_system::Color::BLUE)
} else {
(x, design_system::Color::RED)
}
}