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spritebatch affine draw command

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This commit is contained in:
a dinosaur 2024-09-21 20:05:53 +10:00
parent b5b3e4cb16
commit 86316ee42c
2 changed files with 48 additions and 4 deletions
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42
Sources/Voxelotl/Renderer/SpriteBatch.swift
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@ -124,6 +124,20 @@ public struct SpriteBatch {
.texcoords(flip), color: color.linear)
}
public mutating func draw(_ texture: RendererTexture2D, position: SIMD2<Float>, transform: simd_float2x2) {
assert(self._active != .inactive, "call to SpriteBatch.draw without calling begin")
self.drawQuad(texture, .positions(position, transform, Size<Float>(texture.size)))
}
public mutating func draw(_ texture: RendererTexture2D, position: SIMD2<Float>, transform: simd_float2x2,
flip: Sprite.Flip = .none, color: Color<Float> = .white
) {
assert(self._active != .inactive, "call to SpriteBatch.draw without calling begin")
self.drawQuad(texture,
.positions(position, transform, Size<Float>(texture.size)),
.texcoords(flip), color: color.linear)
}
public mutating func draw(_ texture: RendererTexture2D, source: Rect<Float>, position: SIMD2<Float>) {
assert(self._active != .inactive, "call to SpriteBatch.draw without calling begin")
self.drawQuad(texture, .positions(position, source.size), .texcoords(texture.size, source))
@ -220,7 +234,25 @@ public struct SpriteBatch {
flip: Sprite.Flip = .none, color: Color<Float> = .white
) {
assert(self._active != .inactive, "call to SpriteBatch.draw without calling begin")
self.drawQuad(texture, .positions(transform, source.size), .texcoords(texture.size, source), color: color.linear)
self.drawQuad(texture,
.positions(transform, source.size),
.texcoords(texture.size, source, flip), color: color.linear)
}
public mutating func draw(_ texture: RendererTexture2D, source: Rect<Float>,
position: SIMD2<Float>, transform: simd_float2x2
) {
assert(self._active != .inactive, "call to SpriteBatch.draw without calling begin")
self.drawQuad(texture, .positions(position, transform, source.size), .texcoords(texture.size, source))
}
public mutating func draw(_ texture: RendererTexture2D, source: Rect<Float>,
position: SIMD2<Float>, transform: simd_float2x2, flip: Sprite.Flip = .none, color: Color<Float> = .white
) {
assert(self._active != .inactive, "call to SpriteBatch.draw without calling begin")
self.drawQuad(texture,
.positions(position, transform, source.size),
.texcoords(texture.size, source, flip), color: color.linear)
}
public mutating func draw(_ texture: RendererTexture2D, vertices: [VertexType]) {
@ -338,6 +370,14 @@ fileprivate extension SpriteBatch.Quad {
v11: (transform * .init(w, h, 1)).xy)
}
static func positions(_ position: SIMD2<Float>, _ transform: simd_float2x2, _ size: Size<Float>) -> Self {
.init(
v00: position + .init( 0, 0) * transform,
v01: position + .init(size.w, 0) * transform,
v10: position + .init( 0, size.h) * transform,
v11: position + .init(size.w, size.h) * transform)
}
static let texcoordsDefault = Self(
v00: SIMD2<Float>(0, 1), v01: SIMD2<Float>(1, 1),
v10: SIMD2<Float>(0, 0), v11: SIMD2<Float>(1, 0))

10
Sources/Voxelotl/SpriteTestGame.swift
View File

@ -81,12 +81,16 @@ internal class SpriteTestGame: GameDelegate {
// Sliding door test
let doorAngle = max(sin(player.rotate * 2.6) - 0.75, 0) * .pi
let doorScale = SIMD2<Float>(24, 12)
let doorAffine = simd_float2x2(
.init( cos(doorAngle) * doorScale.x, sin(doorAngle) * doorScale.y),
.init(-sin(doorAngle) * doorScale.x, cos(doorAngle) * doorScale.y))
let doorOrigin = SIMD2<Float>(repeating: 1)
let doorPosition = SIMD2<Float>(704 + 24, 1152 + 12) - doorOrigin * doorAffine
self.spriteBatch.draw(self.texture, source: Rect<Float>(
origin: .init(4 + cos(player.rotate / 1.2) * 4, 0),
size: .init(4 + cos(player.rotate / 1.3) * 4, 16)),
position: .init(704 + 24, 1152 + 12), scale: .init(24, 12),
angle: doorAngle, origin: SIMD2<Float>(repeating: 1),
flip: .none, color: .red.mix(.white, 0.3))
position: doorPosition, transform: doorAffine, color: .red.mix(.white, 0.3))
// Draw mouse cursor
var mpos = Mouse.position