|
|
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
×
5 ?( }1 {! z5 \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。
2 u- \, z# ?% w1 e7 I2 f% X- importPackage (java.lang);
8 b# w) z& ~9 D+ M7 O+ { - importPackage (java.awt); H0 W4 [# U6 N. ?5 t& ?6 s/ P k$ m
- S* S* t O7 h, B2 j# v% X7 h: h- include(Resources.id("mtrsteamloco:library/code/face.js"));/ d" c/ N; E4 u9 }+ Z# R; N. [& O, B
9 e! ~; G U% B& s# l4 b- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);5 V u9 o/ K& }0 |6 O0 D3 s y, R& u
- - w! Z/ |: d+ J
- function getW(str, font) { [, Q9 m8 U" |5 R9 b3 Z
- let frc = Resources.getFontRenderContext();
5 p) n: i# Z3 e# F9 Y( r' Z6 ? H1 i - bounds = font.getStringBounds(str, frc);
, a- C5 t- k) G& {* V8 m% O - return Math.ceil(bounds.getWidth());
( S* ^% W) F( u+ ]% g7 U$ H/ u9 k - }
+ N3 t8 Y$ }' t; |2 k
8 E7 t5 T9 a* Z. D& ]- da = (g) => {//底图绘制
7 w( i* y$ t. K& G5 A4 R" ]5 d - g.setColor(Color.BLACK);1 D! n# F5 n, j# k6 I, i0 {
- g.fillRect(0, 0, 400, 400);
. \5 c: T0 S* I" F: ~ - }5 C8 b# }# R* c m9 j, a. w2 C' J
9 L9 j0 U% ^) ~1 g9 Y- db = (g) => {//上层绘制# v; |* E0 K+ t" {$ W5 r
- g.setColor(Color.WHITE);
5 p& r: Y2 ~6 q! d - g.fillRect(0, 0, 400, 400);
: ^( s" c; F7 a* t- @# G. D - g.setColor(Color.RED);2 T+ E! g6 ]) A7 \" h8 F& I
- g.setFont(font0);& i. Z9 p. `3 u3 l& S: F
- let str = "晴纱是男娘";: I3 I R# I- J
- let ww = 400;+ L8 m4 c! S/ Q5 ^8 Z6 w1 u, D
- let w = getW(str, font0);
1 f8 P" u0 i$ ~8 {7 j: R$ A - g.drawString(str, ww / 2 - w / 2, 200);
( T5 G& D+ X1 m$ S - }0 W' L9 x: c8 X" L7 ], H! j
" y& I4 }$ M) D! [- const mat = new Matrices();
- p/ ^ [/ h6 G% P/ s( y - mat.translate(0, 0.5, 0);
' ~7 H4 a" D5 B' u- H - " E- n8 Q. }( J3 _& T$ E
- function create(ctx, state, entity) {4 V( ?- _3 ^) ]: X
- let info = {
& T8 L( A7 L7 ^, I - ctx: ctx," L a4 w" Z# s' P/ y' T8 x: \! u
- isTrain: false,
y1 ?. \: u5 k" I - matrices: [mat],. t. Z- |3 ?% O9 T
- texture: [400, 400],
6 F, D+ D" W0 ~ - model: {
! t7 R& Z' i. w3 D, i - renderType: "light",
" d, ?' G( ?1 X/ d% L& B, a - size: [1, 1],2 [" y. t }) B0 ]) v5 _8 C
- uvSize: [1, 1]+ n) P# h) A2 N
- }
3 E6 Z# B0 A- V/ [& B$ o. E8 o - }
/ j) E. y, p# m( ~ - let f = new Face(info);4 z0 q! t( Z, _& O
- state.f = f;
t) g+ A( v; f; D
; H, O# Y* f- {- let t = f.texture;: d. F* y; V: M: e" c; m
- let g = t.graphics;
+ f8 g1 J' Q) u2 n/ M4 N - state.running = true;
6 @7 k e) s P: ?. Y - let fps = 24;
9 u9 C U* e8 C" o P% b - da(g);//绘制底图% a5 c+ r: c5 P* i
- t.upload();$ y+ e i1 Z5 v; v2 G7 ] E
- let k = 0; ~1 l& t% P9 ~4 f+ X& j$ C! Y# L
- let ti = Date.now();! [) t: e) k, ^: S4 A( \0 N" _) a
- let rt = 0;7 k0 a( y" C9 R6 D4 {
- smooth = (k, v) => {// 平滑变化
0 N4 M+ a/ B6 X - if (v > k) return k;
! O; @5 w/ y, F/ ^ - if (k < 0) return 0;
8 r+ w w B3 `# {- O$ c - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;" D' y+ G9 a' X I0 E
- }
+ r% C; T5 O, }: {: j% p - run = () => {// 新线程# k& ]% e) B4 W* [# O
- let id = Thread.currentThread().getId();" y; G3 _; s* s9 K5 O
- print("Thread start:" + id);7 |6 |7 g- j1 ]0 l# e* R) t
- while (state.running) {
2 d! S% c1 q6 i4 d) [1 e! l - try {
! j3 P. z7 i; ?3 X- ]; W! Q - k += (Date.now() - ti) / 1000 * 0.2;: v+ ~ M* w4 ~/ ^( [
- ti = Date.now();" Y7 P: v/ J V! d6 [0 }& z3 Z
- if (k > 1.5) {2 C0 n8 r3 A& ~
- k = 0; J& N& G- l# K5 X' Q* e
- }
9 s5 d& l1 {8 h+ ` K! o: r - setComp(g, 1);: \/ E F- Z4 }- F
- da(g);
$ m' x& q0 y n4 S7 h7 N - let kk = smooth(1, k);//平滑切换透明度
5 k2 y2 Q* r1 f: j1 f- q* \5 o - setComp(g, kk);
; H: K& x% T2 b/ J0 P4 h - db(g);
L. A- E- @8 }" E. V) ~ - t.upload();/ d" Q# f: z# p z
- ctx.setDebugInfo("rt" ,Date.now() - ti); R# k7 |8 d% E6 b# T, z: W& A+ m
- ctx.setDebugInfo("k", k);
]- G$ C+ S! O; _' @ - ctx.setDebugInfo("sm", kk);) T# p2 t+ m" b$ Z& l9 A% q
- rt = Date.now() - ti;
7 _3 |2 f- E7 |8 H - Thread.sleep(ck(rt - 1000 / fps));
; G" g/ [7 L5 O5 E - ctx.setDebugInfo("error", 0)
: d# L9 j5 w" n. s3 m& @ - } catch (e) {2 W) `1 C: E( x1 _) F( Y1 Z+ W
- ctx.setDebugInfo("error", e);
. l$ Y7 Y4 d# w - }
- j: y) Y6 S# w4 A8 F( D- O# w - }
6 n3 L5 ?7 w. z" p - print("Thread end:" + id);; y6 h! F5 R5 t4 l
- }. `) _1 Z# R& d
- let th = new Thread(run, "qiehuan");. p9 u p" _& b7 p0 @
- th.start();! B0 H. q2 t3 ~4 ~8 n
- }
2 k2 j* A- A/ i% }% o
# d4 n+ C6 M0 ~6 f1 Q- function render(ctx, state, entity) {
! N2 G6 R) v1 s0 P - state.f.tick();) _ E; ]) V0 \; J. P. r1 a% ~) x* G
- }
; v3 U- }: C6 r# e# X - ; e: s5 v! b d" k$ C* [
- function dispose(ctx, state, entity) {
; w5 L* D) C# _- u" l1 d2 Z* C _ - print("Dispose");
& I8 l! F* k. j. J/ W - state.running = false;
i) }6 i1 n9 k - state.f.close();0 D0 N, u! N3 c2 s" I8 q8 U6 j
- }
' r7 h/ n% m% C* y* o, R2 t - ; g9 c9 Q4 w' K9 X. t2 q! C" d
- function setComp(g, value) {
/ G, V# @3 \0 D& y, Q2 T# K* E - g.setComposite(AlphaComposite.SrcOver.derive(value));
8 x$ m ?# ~" s- j - }
复制代码
1 z, j4 m y1 G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。! J" D! D' `" {" s5 x3 v% C8 X
* K H. d+ ]0 O6 q8 }
6 c& _/ @1 E7 ~7 L& o. k顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)! k$ K3 l9 z) j* c w) W
|
|