|
|
还没有账号?赶快去注册吧!
您需要 登录 才可以下载或查看,没有账号?立即注册
×
" Q6 n! e G }3 P这些天想了想怎么给LCD做丝滑的动画,稍微想了想,便有了下面这些代码。
" b" q3 {4 F/ z) T* u# ]! Z2 Q- importPackage (java.lang);
+ E2 k: a% K9 d& O: f% C* g - importPackage (java.awt);% U% q/ _0 E) I/ |! f1 j* P+ q- N$ h
% t, A* t- a6 j E- include(Resources.id("mtrsteamloco:library/code/face.js"));
/ @, U) ^5 G, L2 V
- S0 H9 t$ ?( S- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
. l6 t$ C+ B3 l, R! n
; g1 y- `# j% u0 P7 c1 ?- function getW(str, font) {
5 n$ d, N3 Y1 K3 q - let frc = Resources.getFontRenderContext();- A+ g; Z: h8 K' o
- bounds = font.getStringBounds(str, frc);8 P" ]1 D [1 x1 ~' z
- return Math.ceil(bounds.getWidth());
% X# F9 \+ W; h: q0 D! `4 @3 m - }( d2 A! U; v7 _- O& V `
- 9 O% U9 d' z) K* G, M) L! H
- da = (g) => {//底图绘制
1 q4 j! s) j+ { m& ~7 N - g.setColor(Color.BLACK);
: H6 E) h' [4 {; H - g.fillRect(0, 0, 400, 400);- j, r- R% f+ Z% W% s p# |
- }
% U$ w! Q2 W7 |) N; O$ ~# S" b1 C
9 N1 g. B) |1 E* Y- db = (g) => {//上层绘制
5 P, I- H% X' s; ]4 G- g, c - g.setColor(Color.WHITE);1 j1 I% z1 p: I3 q' J6 {
- g.fillRect(0, 0, 400, 400);
4 p% l/ F. y6 E7 t& k& Z; o - g.setColor(Color.RED);
3 r& [* Y4 T v" c! I - g.setFont(font0);! S& c$ L* j t0 ^ p$ T
- let str = "晴纱是男娘";. I% D& `1 t9 u9 ?& r
- let ww = 400;
9 M3 p1 ~5 s! B* p - let w = getW(str, font0);
y2 [3 D' J) x - g.drawString(str, ww / 2 - w / 2, 200);) p( e' ]: q p& M
- }
7 W2 W( M2 m! u( _" G) U* W3 ], [; q
1 Q' @2 _3 g5 S# S4 K% _; @! s- const mat = new Matrices();' r' r7 j9 N) n9 r
- mat.translate(0, 0.5, 0);6 g, }& @1 n: G) b& o
/ \* k6 j/ c; F# |0 h5 i& y3 S- function create(ctx, state, entity) {
" c0 \2 T& }- k7 {7 E - let info = {
. e- E( R0 V+ ~+ K4 X - ctx: ctx,- V9 }1 o3 M5 x$ y6 L* o9 O
- isTrain: false,+ X. @- q& \; g; ]
- matrices: [mat],
7 W+ n9 H: l5 R' ~6 }' O - texture: [400, 400],& Y6 F! x- o, [3 r1 q; ?: h
- model: {/ w k/ R% U A% J
- renderType: "light",
9 |# J" o$ m8 a! Z& h& n4 f - size: [1, 1],5 L$ H, u# w, m$ d+ w) e0 t
- uvSize: [1, 1]
u2 O# C4 a& N5 i; V - }
" l# ?' q' d1 D* ?# W, c - }6 a0 k6 ^5 O& C4 g' Q6 T% @. F
- let f = new Face(info);/ E' v9 p. C% H( } I$ f
- state.f = f;3 @+ @: w: r" b. x0 R
- 0 S9 b- B5 w# z1 N; U4 y1 K
- let t = f.texture;
: H( f5 u2 |5 i& e& |2 k$ i0 l - let g = t.graphics;
' G% _+ X6 N& P- O- W0 b5 U: r - state.running = true;/ P! q# n3 E- \( a0 `" e
- let fps = 24;
~2 U# Z- H* j0 k& f) f! }; s - da(g);//绘制底图
" O1 [+ \1 I8 U& X; V - t.upload();
4 h8 b) y+ J6 ~, S6 z6 n' c - let k = 0;
4 P0 `' U6 t8 O3 F - let ti = Date.now();
2 d/ u" U, u' z# B h- G F - let rt = 0;, b, C( ^ A# S% ^8 n2 C& A& l
- smooth = (k, v) => {// 平滑变化
$ G6 G) k4 ?( Z# q$ a9 C5 z) ^& L) }0 V - if (v > k) return k;4 F1 I! a a- R+ ]7 Y) `0 P, Q
- if (k < 0) return 0;. w" a: o2 s! M7 k0 P9 @& U/ e. D
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
/ n& Z' z6 E: \5 w - }
0 K* `% f& K4 |' v% \2 q- S5 ` - run = () => {// 新线程/ w$ Q' {+ L7 E( `0 H+ B# M/ q
- let id = Thread.currentThread().getId();
3 Y: H) T! X1 t% \. `, l) C/ L - print("Thread start:" + id);3 R) X$ `5 a8 u: o
- while (state.running) {1 P5 z7 E5 v1 {8 I% B3 {% c
- try {
$ e% o7 T* J' u1 h, ]7 o - k += (Date.now() - ti) / 1000 * 0.2;
/ u% s- U& G, s% b1 g# U b/ D - ti = Date.now();- ?* ~1 x9 W7 C5 @% ^
- if (k > 1.5) {
% N8 s( X( N3 B% p - k = 0;
4 z: d0 Y; p7 O& K* R - }
8 u3 W5 {$ n; s* ^' [) Y - setComp(g, 1);4 D4 h( V' s* [, `+ P2 M6 }% B
- da(g);" | R* B+ p$ }2 [! e6 y" l4 W
- let kk = smooth(1, k);//平滑切换透明度
0 s q d$ @3 _& ^ - setComp(g, kk);0 s3 F# ~1 {9 y" i& }: o3 ^% Q
- db(g);) u& `! |8 _) _ p
- t.upload();5 x: s! [/ R# @* w2 L- G
- ctx.setDebugInfo("rt" ,Date.now() - ti);
: q% \, T. T% A+ e5 X1 Y: @ - ctx.setDebugInfo("k", k);
# S# T7 O. v% F6 w5 {& `# n - ctx.setDebugInfo("sm", kk);! U* `& {& [: m* i
- rt = Date.now() - ti;9 b% x1 F8 P, x' V2 n; t& S! c
- Thread.sleep(ck(rt - 1000 / fps));
0 \+ c0 m0 ]- j$ L - ctx.setDebugInfo("error", 0)
6 K4 g# @2 x3 o5 z8 W# c {- V. r; [ - } catch (e) {) r. S4 J5 _3 f8 t# n
- ctx.setDebugInfo("error", e);
$ h' n6 T. s0 ?$ N - }- ~* R! o3 H A& Q x$ Z" b
- }
& i( |% }% F' M" s - print("Thread end:" + id);
7 A+ |, W$ z1 D4 z) Z9 U - }
: t" V: i& T d: b9 G. F+ P - let th = new Thread(run, "qiehuan");
! P6 e; {, A1 _+ W) X - th.start();
8 n. h1 ~ C3 V# ~7 k6 b+ _# w - }8 J, ?8 [5 w" V2 M9 g+ \' M0 {/ g
- " e1 u2 e8 P# e+ N8 \& a
- function render(ctx, state, entity) {9 T1 u) d$ i2 i- ], z+ E
- state.f.tick(); B+ s5 G" H1 v% X) ]
- }$ M$ |% d3 U. I! y
- 8 ?" U! ~$ F" T! r/ P4 w! f, I
- function dispose(ctx, state, entity) {
6 z* s+ i1 Y+ X) W# L - print("Dispose");
$ q6 F' B: K' d+ w - state.running = false;
0 L7 T% |) ^7 C, V7 u/ k - state.f.close(); n+ B& W- q ~; F* _/ g& n
- }
0 ~3 |$ p& D+ F
" d3 `3 D7 P: T9 v' ~- function setComp(g, value) {0 [" W# U3 }/ P
- g.setComposite(AlphaComposite.SrcOver.derive(value));+ v# j1 ]8 z" V3 B, T. r0 p' O
- }
复制代码 " q; }, B) T( u; X
写了这么久的js,我便渐渐发觉使用 render 来写更新内容有局限性,比如说会拉高延迟.....等等(但可能也没什么影响?)。在这里我用新建 Thread (线程) 然后在新的 Thread 里来处理图片更新逻辑,实现丝滑切换。
$ Z/ I; @( a9 Y# j/ N$ O: R; k
. F( @5 v& f- `/ X- |7 m5 C/ B( h/ d% E* ^ P5 \" {
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)4 w0 @, K0 N7 C
|
|