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+ F- k; R. H! B; a' ^3 A5 _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。. [" A; y3 L1 O; x( |# O* T" c
- importPackage (java.lang);
# x! A- U% `; q/ y" l; L+ m2 Q - importPackage (java.awt);$ z+ |' F: q) J0 A% \
4 u) Q o4 Q; q1 q' \3 j6 F- include(Resources.id("mtrsteamloco:library/code/face.js"));) q- c! ?& V& ^/ c" `9 e/ {; ]
4 U# G; v3 {3 a& r9 ]: o- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);8 C# ?3 {3 A( W
8 W0 b) m: D7 W% Y8 O- f, z# I- function getW(str, font) {6 Z7 p( Y% m! R% \
- let frc = Resources.getFontRenderContext();
3 S; E4 ^: C( G - bounds = font.getStringBounds(str, frc);4 N: H; H8 O; `
- return Math.ceil(bounds.getWidth());" j! m% O5 c0 @9 `
- }
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2 ~, J* E- J2 S$ u8 \8 I5 E. A, S4 R- da = (g) => {//底图绘制
- Y# l1 h Y) s8 Q - g.setColor(Color.BLACK);4 j/ b# U& g# F4 F3 i1 Q: }3 X! e
- g.fillRect(0, 0, 400, 400);8 N/ _$ ?$ U1 @2 M0 z6 I8 d
- }7 H) \2 m5 W/ O- K3 ?. P8 T
- 0 C( j0 o( r/ z! X7 d
- db = (g) => {//上层绘制4 C2 J: ? ]* w V. G( @+ ]
- g.setColor(Color.WHITE);
4 C9 E) J8 E/ M' F' L2 Y% ~ - g.fillRect(0, 0, 400, 400);
9 O4 ?' g; n( X - g.setColor(Color.RED);
. m5 {/ p" R* D$ \ - g.setFont(font0);
+ k+ ~7 o# ~8 g) l4 j% r4 Y. F - let str = "晴纱是男娘";3 k6 @0 |) W0 M4 U( _' P2 s% d( _
- let ww = 400;0 q& q4 }1 y& \9 O
- let w = getW(str, font0);0 o# D# {9 F, _1 _7 v$ N% a& i
- g.drawString(str, ww / 2 - w / 2, 200);
8 i! S6 @3 z2 v# @6 J6 { - }
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% o5 o& v. s. x' T: U7 K- const mat = new Matrices();- \/ A! J6 z) K. L" y) @( J
- mat.translate(0, 0.5, 0);' Z! z- c' L! y) ]* t y. Q$ ]
- 1 o( P& y8 @3 j, |
- function create(ctx, state, entity) {
8 ]7 M4 v' p/ i; ]3 X - let info = {; X/ e2 k; a. v4 m+ |
- ctx: ctx,9 Y& |, F0 J7 g$ `8 _! z' P
- isTrain: false,# Q& [; D1 [, V" g+ d
- matrices: [mat],. l4 N: d6 I9 ]
- texture: [400, 400],0 S+ ?. z4 n6 J( k3 y+ M
- model: {0 \) _, S- O. [1 R4 S! I
- renderType: "light",. ]8 y4 I+ D5 m9 A8 O2 Z( {
- size: [1, 1],/ a# ^8 T! Q$ G+ A2 j! B
- uvSize: [1, 1], g2 y) I( E" B7 a4 X) q% [
- }
, \& I" c# B# \8 R' H8 N) Q3 `: B - }
* V1 @, W+ U. y4 K X! z: H, g - let f = new Face(info);
: E! g0 K( ]1 D; Z+ u - state.f = f;1 p+ A8 @! a* l$ t' m
$ s9 R2 o7 M, g& H- let t = f.texture;
( l4 N6 \3 D+ Y" k* O2 S* G Q) F, W - let g = t.graphics;) n. G5 s0 A+ H6 G, e
- state.running = true;3 ^+ A- I$ H+ D- j- w1 H
- let fps = 24; f8 T1 m( H. c4 A4 {' v- C5 s
- da(g);//绘制底图) ?- r0 I8 G/ H R9 b# p f
- t.upload();7 x' p; L K" k( \
- let k = 0;
% N W5 g" D4 Q. h3 C - let ti = Date.now();) q! r4 B7 ], e/ ^
- let rt = 0;
% ~; ^' ^. e& @4 _# Q0 H+ s& F! v$ h - smooth = (k, v) => {// 平滑变化% l" q6 t8 k5 ~" t9 }$ F
- if (v > k) return k;
$ H6 ~- a- I* _$ P9 k" B - if (k < 0) return 0;
4 p& n$ C2 V1 R - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;4 R. k8 g( F4 {( o+ U
- } g! H$ w$ P9 y6 x- g
- run = () => {// 新线程5 D" C* ^$ h7 `- h, {, B
- let id = Thread.currentThread().getId();
0 D( n8 W- J8 j2 R+ Y9 _) T/ ~ - print("Thread start:" + id);* U5 {1 p$ h! w
- while (state.running) {
3 Q/ b. i6 F, p* [8 a - try {
, o4 G/ I" w) r - k += (Date.now() - ti) / 1000 * 0.2;- S/ Z! d1 } {3 V4 V; A+ X0 O; o: H
- ti = Date.now();% i# M! O ~3 a0 ~3 Z
- if (k > 1.5) {
( m* Y* @4 S, B - k = 0;
+ l5 \, `6 j( U" q) g - }
( \- w$ F- B( B1 V - setComp(g, 1);9 v% Q% y7 u. {( Q n0 E
- da(g);
' p) ] z$ ?, c3 T; y, ]! c - let kk = smooth(1, k);//平滑切换透明度
: ^. V Z9 A( v) j8 M5 S0 |" ] - setComp(g, kk);3 M/ j3 `+ @6 ?. [- T# E
- db(g);
, y) n5 g! p1 N) B1 R+ ] - t.upload();) P4 O4 s5 L- `6 V# R
- ctx.setDebugInfo("rt" ,Date.now() - ti);5 o& L1 {$ ^" P+ U* Q7 U3 Y
- ctx.setDebugInfo("k", k);& z' b# p+ d# ]% V! j i
- ctx.setDebugInfo("sm", kk);- Z1 Z( f9 H- A0 Q( P" Y2 w8 V
- rt = Date.now() - ti;
7 i; w* S! p9 b" U5 [ - Thread.sleep(ck(rt - 1000 / fps));# `9 P; f" i* W0 {2 L
- ctx.setDebugInfo("error", 0)
) g# i2 c- N, T3 A& ?7 t+ v( t - } catch (e) {8 q8 k1 ]9 ~* F$ b- R [( }7 e3 j0 Z
- ctx.setDebugInfo("error", e);6 K0 P$ f0 u) V/ d' ^
- }
8 f( [( j7 N: t) a5 M& p - }9 C$ g9 S: a% u% O: p3 k3 n
- print("Thread end:" + id);
$ N0 d# c! Y+ @0 E - }
% M: g* ^9 \* j - let th = new Thread(run, "qiehuan");: W. B g; X5 ]! L) T
- th.start(); E0 H: D/ |- f9 C
- }9 e I) S3 g/ p$ w8 Y: }) u; i5 Y
& N. g: W! |# s0 y1 x8 s- function render(ctx, state, entity) {
* v+ |9 d, I$ v6 l, i B4 u - state.f.tick();2 K3 C1 c! q0 w( k/ O- q# M5 S
- }7 D9 ?. P1 v7 Z7 ?; z
- . i. r5 P& M6 t% k
- function dispose(ctx, state, entity) {" G. _ x( j5 G2 J0 A! S9 k
- print("Dispose");
- S" b, v& `( s% ~ - state.running = false;" i c1 j' `7 c/ z- e1 Y. Q
- state.f.close();" `. F: A" M/ B0 ~3 |
- }
/ p* x$ A9 x1 s: x* v1 q: @
0 ~# ~& M( j/ X8 m- function setComp(g, value) {$ Z4 }5 i' j4 ]8 q
- g.setComposite(AlphaComposite.SrcOver.derive(value));9 V! V- p; h$ W' j
- }
复制代码
; [" E; S- G4 F2 C2 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。
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顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
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