|
|
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
×
% V3 L' a$ w3 r9 f4 F9 t
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。8 @. F; Y0 A4 U0 r/ T! |
- importPackage (java.lang);# m- i/ ^% m7 r( I6 T9 Z
- importPackage (java.awt);7 k/ a% x- J6 @- J6 [+ U1 c
- : C5 r( b& H% g e+ E
- include(Resources.id("mtrsteamloco:library/code/face.js"));1 g5 \8 d% i6 v" k! a* V. c
- % p& F5 o/ I. z/ i$ D# Z% t
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);, j' _, c: k# r D$ y5 N# C
1 _0 ]9 G) {7 z- function getW(str, font) {( U6 D7 T6 q6 Q9 E( c
- let frc = Resources.getFontRenderContext();
) P! o' t5 V1 w2 ]+ }( A! d* Y - bounds = font.getStringBounds(str, frc);
M3 M+ L1 C3 k, A$ { - return Math.ceil(bounds.getWidth());
" G$ \% l& A! M) d( w! ]$ g - }) ?) T3 L e$ Z2 }" S! G
! Q! I, ~* @- Z" G$ A5 d9 q- da = (g) => {//底图绘制
! |( I0 N( _' P) F3 I; b# X5 m - g.setColor(Color.BLACK);) ?% m! {# I. c9 q
- g.fillRect(0, 0, 400, 400);
m* }1 D; q. t6 I! C2 K0 v - }
3 F! s- e. l: {" h P
5 T8 e" k h( g! a: o, ]- db = (g) => {//上层绘制 R# L% @( f4 [; t3 Z: d
- g.setColor(Color.WHITE);
; B/ I& r# _9 c4 G - g.fillRect(0, 0, 400, 400);
' u5 H E; Y* X1 U9 u$ m2 K - g.setColor(Color.RED);
! n) K. n2 |5 H! ] - g.setFont(font0);7 E4 c/ g! k) h, Z4 B( j
- let str = "晴纱是男娘";
* }1 I( x6 _8 A8 D! L- B - let ww = 400;, G$ {9 Y' b h/ l- P; n
- let w = getW(str, font0);$ i# l2 v0 W2 K j( |- B
- g.drawString(str, ww / 2 - w / 2, 200);9 o: K f9 _) k: `
- }
7 y& k( M6 Z0 N5 m( I6 e* S/ ?1 F - % s) M H5 G$ \, }" Y$ n* b/ s* u
- const mat = new Matrices();0 l" l8 e: x! ~4 l" d" z
- mat.translate(0, 0.5, 0);
2 c4 K) i7 g' C2 {: E- w - - I" u G8 b- w0 P; f
- function create(ctx, state, entity) {
( j' z! S" `8 C6 h! d - let info = {
$ e8 x! `- R7 k; f - ctx: ctx,
+ l1 p' C4 i' A7 F4 V0 s/ }4 }- U - isTrain: false,0 j9 w& i7 d) U7 O2 v
- matrices: [mat],
1 Z9 {2 L) P% _% Z1 { - texture: [400, 400],
) k% q1 i+ ~- Y+ K2 v- e - model: {
5 I! q- H6 l( _* V+ s% A9 z - renderType: "light",
+ L0 }5 K& E, r8 S* ?- I - size: [1, 1],
" }2 [. m6 m; \2 h* Z% O& y - uvSize: [1, 1]
: `) ?7 l/ l" {( }5 ]4 c7 \ - }8 U5 s0 ^5 e" a- H
- } O7 U; L9 A& u, x. y" d2 r
- let f = new Face(info);
n& T* u! O9 [% I - state.f = f;+ c) c5 z# C7 _8 z4 M i5 I+ ?- Z
5 I4 @& ?% ?8 {- let t = f.texture;
" s- J& ^3 s+ i4 y, {& ] - let g = t.graphics;
v% x) R* w* n" l - state.running = true;) i" {3 x% i2 R! Y/ K5 Y6 V
- let fps = 24;8 L3 t, ?/ z, d1 U+ i a- n
- da(g);//绘制底图+ j5 n2 T0 r) g! M
- t.upload();7 q) ^ o, T$ A8 V/ d: `
- let k = 0;
( b7 `9 t6 K5 N; ^& g - let ti = Date.now();
2 d7 c2 J/ c6 ~2 T5 n: K( j - let rt = 0;
; p' v" x/ V: ]0 Z - smooth = (k, v) => {// 平滑变化
' Q( \# T# @4 X- G- v, D - if (v > k) return k;! C) m8 A! H. \4 Z/ j9 M* J, a
- if (k < 0) return 0;
* ?( {4 B1 F" v) d; i4 W$ h. N - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;- G# N" a4 }/ T Z
- }8 |* Y* k2 D# Q$ a' Y5 e
- run = () => {// 新线程- ~9 U3 ]% D6 G( g
- let id = Thread.currentThread().getId();
9 @! A/ ^+ C% R- Z3 r - print("Thread start:" + id);
3 ^$ ?( O. l+ L' z; l, ` - while (state.running) {& o4 }+ D6 v$ D: ~
- try {
2 C( S% V' b; l( Z& N6 w* l0 W8 C - k += (Date.now() - ti) / 1000 * 0.2;! M: M" h/ j" _. v0 S, ?1 l$ S) r3 c
- ti = Date.now();# W/ Z1 H- Y$ a) U5 a/ a5 v
- if (k > 1.5) {
# o4 |! W/ r- \0 f+ z8 t - k = 0;
0 t, I7 o: W5 B& _7 Z - } m1 ~7 z* N P, V
- setComp(g, 1);1 A$ f$ @. |, B
- da(g);* Z, g5 n% y, q: {0 e' H3 n
- let kk = smooth(1, k);//平滑切换透明度
- Z6 l7 g( J$ ~2 Y8 e, Y9 K - setComp(g, kk);
4 i2 }/ `/ I7 `8 z6 v N5 n( { - db(g);4 r1 R0 [- V$ \
- t.upload();; N" E- A0 _+ \( |% y' [6 M
- ctx.setDebugInfo("rt" ,Date.now() - ti);
( k& f; u: G& ?1 M" i4 n+ [ - ctx.setDebugInfo("k", k);; _7 o) X! l' r
- ctx.setDebugInfo("sm", kk);
/ V5 S; \7 W* T' V2 q k - rt = Date.now() - ti;: x" P7 Y' g* f$ i/ U Q& q
- Thread.sleep(ck(rt - 1000 / fps));
$ h: R& ]: S- K/ N1 ?3 J. y1 f - ctx.setDebugInfo("error", 0)6 N6 q, D) F& Q; I9 v! v
- } catch (e) {$ i2 r( @5 o4 P2 y9 L
- ctx.setDebugInfo("error", e); N0 E; Z0 ?0 Y: s, P" x" p
- }
6 a2 [( [' r: ? - }
. n2 i v9 |8 v2 Z# [6 j8 L - print("Thread end:" + id);- z- A) w7 k0 K+ v2 {
- }4 U* _2 X5 x$ T
- let th = new Thread(run, "qiehuan");) A4 h: D6 ?7 Z9 x2 |# U. q; C
- th.start();
: m) X- C6 I( C1 i! p1 | - }0 `. U: V1 B* w" a8 ]
- % R8 R% R3 g: t: u d
- function render(ctx, state, entity) {$ c: a8 w; D, q; z1 R* H
- state.f.tick();
+ L9 ~: A7 l" c: x8 d - }
r3 J7 n& L# q* a - " f: j. p( U3 W. E# p9 o
- function dispose(ctx, state, entity) {
8 T! f3 b+ Z6 ^+ U C) ?. P - print("Dispose");! g; u% G6 A- [8 X/ U6 v* {
- state.running = false;1 t+ L* y- U4 q7 n$ B
- state.f.close();* |: r0 d. c" U
- }1 ^+ s0 Y6 u: y
- # a+ {, f" a K: u" \
- function setComp(g, value) {
- C) h9 ]! S0 ^; G0 g2 W - g.setComposite(AlphaComposite.SrcOver.derive(value));
2 p: b7 c0 ]- L3 p; c3 ~ - }
复制代码
9 k- L# A6 X9 `# c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。1 d1 w0 X0 R" [/ m, D" g
9 O1 l1 E" {3 U6 P! j1 c- }3 s2 P: I. ]! V) g
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)! f5 d0 l: N$ r5 }( Z. P% v" v
|
|