|
|
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
×
* a i; e0 S3 p* B* i" p& K: q* o( r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。4 O8 @, p S6 @' X
- importPackage (java.lang);- j7 {9 v' M5 g+ {4 q' U W, z
- importPackage (java.awt);
9 [+ \! ?9 f% d5 i- m - $ w# g O7 t7 q+ u8 W5 O% C$ I/ p1 E
- include(Resources.id("mtrsteamloco:library/code/face.js"));) P2 r8 C0 `* v9 l8 i' K# P8 p
- ]' Q5 e; g/ r6 L$ {/ f" @! F- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);0 }$ k4 L+ T* |) y
& K8 G2 I. r. P. s' V U y- function getW(str, font) {- v3 P, J& P9 {6 A# p/ X
- let frc = Resources.getFontRenderContext();* r9 n, Q3 ? h5 ]0 v& r+ Q3 Y
- bounds = font.getStringBounds(str, frc);
# `$ c: Y! r# q) r0 l% O# s - return Math.ceil(bounds.getWidth());( f- ^, a% W, X: i1 z
- }5 @0 @: ~. _8 C3 [. {
4 y$ e2 S! b" B- \- da = (g) => {//底图绘制5 X6 z+ J% |+ u
- g.setColor(Color.BLACK);
9 c. J+ V, K9 R& F" M2 o; G - g.fillRect(0, 0, 400, 400);
% N0 R# O0 ~7 b2 d - }
1 R' ? n/ F. b% i6 S. {- e
" p' G" b1 {" j B4 P: |2 f- db = (g) => {//上层绘制" G2 m$ D" I U2 U6 k0 y% n
- g.setColor(Color.WHITE);
6 ?' Q1 l- K6 ]- u4 L - g.fillRect(0, 0, 400, 400);
6 d4 f% D" @2 o4 @4 _ - g.setColor(Color.RED);
! p$ r& I( `! i/ t, | - g.setFont(font0);& U9 _/ [! a0 B& J$ {
- let str = "晴纱是男娘";
T( A& q5 z) ~& `% F( D, x7 ` - let ww = 400;
# C% M4 T4 A' J0 Z. N$ ^# X3 v - let w = getW(str, font0);
+ p) g6 n/ w. b, W+ W, n* i& J1 K - g.drawString(str, ww / 2 - w / 2, 200);/ B: n7 b9 X" m: |
- }- c9 W9 j8 [) O! ?9 U+ u
- ) j. b e- K3 N5 W- g, q& R) L
- const mat = new Matrices();
3 H4 l1 ^7 ^" R, S* V! h6 b, X - mat.translate(0, 0.5, 0);
# V! W: x1 S+ f; ^2 s( u1 L4 x+ G
: R' U/ B" {- T* h5 H- function create(ctx, state, entity) {
: J B! \) Y' G; f0 v - let info = {1 @2 G+ ~/ A! z
- ctx: ctx,
6 l" u/ @8 ?: x* D& J* _; x7 n* _! B8 M - isTrain: false,: U0 C, Y3 h, H* [ b
- matrices: [mat]," [' d; A0 J/ W! k2 | R
- texture: [400, 400],& [- } i" ?/ N7 I# B
- model: {
* o" T7 `" R4 i6 c - renderType: "light",
- t T$ Y4 g$ ]) A - size: [1, 1],8 {7 p7 g# m0 o# J
- uvSize: [1, 1]3 V! w) V" F; Z, R! u4 ^
- }
$ k! D7 j( {" M# H! E - }
% d( n4 M8 i% s. I- N - let f = new Face(info);7 ]0 G& }: t3 h0 g, g- @
- state.f = f;9 y/ G, O5 e0 v. y$ A, w0 G3 ]
) X6 @/ _ N2 L- @, B+ V6 D P- let t = f.texture;
, h/ z2 ~2 r/ q3 E. h1 y$ j - let g = t.graphics;0 q/ n+ m5 _6 c h0 i- n
- state.running = true;
: }( O+ H, i' r% a - let fps = 24;9 R; Y% _9 a* p) L) }( @( `
- da(g);//绘制底图0 T+ j) x0 V* z3 K& g8 E- l4 U
- t.upload();9 w' C: v( X' N. U, M+ c
- let k = 0;
/ |# z+ @* G, v* N4 B5 ` - let ti = Date.now();
& ^+ f5 `' ~6 G& d, u$ D - let rt = 0;; ?4 @( B6 ^% R9 w4 c" g
- smooth = (k, v) => {// 平滑变化2 I% D3 X/ _- E1 b" ~
- if (v > k) return k;+ ?: C) W8 O9 P+ ~. h. o
- if (k < 0) return 0;5 y9 P! N" O( ?; e
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
2 e1 x( K4 R2 |, Q2 U% H9 C - }
7 J E4 \4 X- _5 q7 g2 N9 y - run = () => {// 新线程
2 [/ u2 z# E3 M' Y6 M$ J- P7 ^$ |6 L - let id = Thread.currentThread().getId();
|! X4 O# R. e - print("Thread start:" + id);
9 w8 j5 s8 b3 X - while (state.running) {# x; o' L B/ [& \
- try {! d: s1 }5 S% s1 ]1 }) X
- k += (Date.now() - ti) / 1000 * 0.2;
^/ V8 i) A4 f1 a& ~- o( I" P - ti = Date.now();0 F" {% g+ _- ?( e8 ~4 R2 y% h! [( v
- if (k > 1.5) {
) B* C/ m0 j$ v3 s ^ - k = 0;
R- a6 [, @/ q- d( R0 ~' K - }( Q6 P) d2 \' d$ @2 n
- setComp(g, 1);: |& v2 n! a3 h- G
- da(g);
* T: Q3 \; }2 \5 L2 A6 ^ g - let kk = smooth(1, k);//平滑切换透明度# ]3 J6 ^- M0 \5 |
- setComp(g, kk);6 F; p- N$ u6 e2 W6 @7 d
- db(g);9 J8 N' @" O. e, {
- t.upload();
0 j9 b+ G2 L3 J4 D/ h' N - ctx.setDebugInfo("rt" ,Date.now() - ti);6 a. u }4 Q- l0 Z9 }
- ctx.setDebugInfo("k", k);
, A! a5 W+ C. q1 c+ x - ctx.setDebugInfo("sm", kk);- x/ O" {( S5 Y2 S+ [' M7 T
- rt = Date.now() - ti;
3 I! y9 G6 ~6 D9 E$ y% q - Thread.sleep(ck(rt - 1000 / fps));
1 |: j z$ \- F* s& W" F+ t9 L. g - ctx.setDebugInfo("error", 0)1 n9 d! X$ h+ Z: ~- D
- } catch (e) {
$ b' |+ j0 I6 ` - ctx.setDebugInfo("error", e);. E, a& J7 X- D7 f; O) C
- }4 F: S6 S" O1 L9 {- L* D+ u
- }4 M) S4 d3 J$ [, S0 }
- print("Thread end:" + id);! M! Q6 n- @$ Y6 {, `# j
- }
2 e. B! J: V- \# h& W- E# y6 T - let th = new Thread(run, "qiehuan");$ o4 e; ]* T1 r5 ]
- th.start();; U/ c9 s K4 S7 s( X
- }
, K1 V, y* O D1 m
$ o1 f" B9 Q7 H8 Y" ]7 } c- function render(ctx, state, entity) {# I; N# a! `, U. m2 o% z
- state.f.tick();, [* O2 Q- ~' E3 }, ^
- }
. f8 m/ v* A1 |8 D1 X9 ]8 i5 W - 5 n' R+ u- H' F/ }5 m
- function dispose(ctx, state, entity) {
' P1 ^9 e$ U0 b1 u, c$ P' E+ S$ V - print("Dispose");
, H( ^7 |: B9 E' g* `! {& Q. O, z, C - state.running = false;
+ E2 q# U9 r. x( W7 v" b' ? \ - state.f.close();
% d1 Q: C0 X1 a* t - }% Z6 H0 ?5 [6 e- Y' P8 t. B
0 A) G7 d% w, r5 v- function setComp(g, value) {
; J3 y$ C& K) h% p - g.setComposite(AlphaComposite.SrcOver.derive(value));% Y Q7 x0 b" f! [+ @
- }
复制代码
8 Y. p1 l8 }3 m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。4 ^; f0 n- X8 ?1 q
9 y3 E. h8 k2 R* C3 |; d h! S$ L# H( 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)
) y/ U) ?3 y( m# k- X9 r' Z |
|