Jérôme Bousquié
4acf1d821d
- AppHandler::render now receives the current &Frame; its default implementation renders the whole scene automatically via app.render_scene(frame.view()) (Option A). Users can simply not implement render for full auto-rendering. - Add Renderer::render_scene: batch-renders every scene entity in a single render pass. Factored per-mesh draw logic into a private draw_entity helper shared with Renderer::render. - Add App::render_scene(view) delegating to the Renderer. - Fill simple.rs with a real quad (mesh/material/entity) without importing wgpu; the scene now auto-renders via the trait default.
46 lines
1.4 KiB
Rust
46 lines
1.4 KiB
Rust
//! # Transform Module
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//!
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//! Defines the `Transform` struct for representing object transformations in 3D space,
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//! including translation, rotation, and scale. Also provides functionality to convert
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//! the transform into a 4x4 matrix for use in shaders.
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//!
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//! ## Usage
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//! - Used by `Scene` entities to define their position in the world
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//! - Converted to `Mat4` for MVP matrix calculations in the renderer
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//!
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//! ## Related Types
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//! - `Transform`: Core struct for position/rotation/scale
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//! - `to_matrix()`: Converts transform to a 4x4 matrix
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use glam::{Mat4, Quat, Vec3};
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/// Represents a 3D transformation with translation, rotation, and scale.
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#[derive(Debug, Clone, Copy, PartialEq)]
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pub struct Transform {
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/// Translation vector in 3D space
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pub translation: Vec3,
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/// Rotation as a quaternion
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pub rotation: Quat,
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/// Scale factors along X, Y, Z axes
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pub scale: Vec3,
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}
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impl Transform {
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/// Creates a new identity transform.
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pub fn identity() -> Self {
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Self {
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translation: Vec3::ZERO,
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rotation: Quat::IDENTITY,
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scale: Vec3::ONE,
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}
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}
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/// Converts the transform into a 4x4 transformation matrix.
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///
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/// # Returns
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/// A `Mat4` representing the transformation matrix
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pub fn to_matrix(&self) -> Mat4 {
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Mat4::from_scale_rotation_translation(self.scale, self.rotation, self.translation)
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}
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}
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