Nathan Vegdahl
caed4c67de
This simplifies a lot of code, and will make experimenting with other things a lot more straightforward.
31 lines
622 B
Rust
31 lines
622 B
Rust
use crate::math::Xform;
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pub struct TransformStack {
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stack: Vec<Xform>,
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}
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impl TransformStack {
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pub fn new() -> TransformStack {
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TransformStack { stack: Vec::new() }
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}
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pub fn clear(&mut self) {
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self.stack.clear();
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}
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pub fn push(&mut self, xform: Xform) {
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match self.stack.last() {
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None => self.stack.push(xform),
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Some(prev_xform) => self.stack.push(xform.compose(prev_xform)),
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}
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}
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pub fn pop(&mut self) -> Option<Xform> {
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self.stack.pop()
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}
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pub fn top(&self) -> Option<&Xform> {
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self.stack.last()
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}
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}
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