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First commit, app Mandel

pull/581/head
marko 2020-10-16 14:37:32 -04:00
parent 5023902fed
commit bbb3bca5a2
6 changed files with 377 additions and 1 deletions
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14
apps.json
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@ -2238,7 +2238,6 @@
{"name":"worldclock.img","url":"worldclock-icon.js","evaluate":true}
]
},
{ "id": "digiclock",
"name": "Digital Clock Face",
"shortName":"Digi Clock",
@ -2264,5 +2263,18 @@
{"name":"dsdrelay.app.js","url":"dsdrelay.app.js"},
{"name":"dsdrelay.img","url":"dsdrelay-icon.js","evaluate":true}
]
},
{ "id": "mandel",
"name": "Mandelbrot",
"shortName":"Mandel",
"icon": "mandel.png",
"version":"0.01",
"description": "Draw a zoomable Mandelbrot set",
"tags": "game",
"readme": "README.md",
"storage": [
{"name":"mandel.app.js","url":"mandel.min.js"},
{"name":"mandel.img","url":"mandel-icon.js","evaluate":true}
]
}
]

7
apps/mandel/README.md Normal file
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@ -0,0 +1,7 @@
# Mandel
Draw a colored rendition of the famous Mandelbrot set. Pushing button 2 activates zoom mode: the top and left edge of the zoom region can be moved up/down
with buttons 1 and 3 and left/right by touching the screen left right. Pushing button 2 again allows movement of the bottom and right edge in the same manner.
Pushing button 2 a third time renders the selected region full screen.
The code uses inlined C code for perfomance reasons. Full source is provided on github.

1
apps/mandel/mandel-icon.js Normal file
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@ -0,0 +1 @@
require("heatshrink").decompress(atob("mEwwkA/4A/AEGIACQX/C/4X3x4XX/AXV/4XsBoYYFC6IPFC5gWFGAgXSDAgXIXAYXGF5mPA4ICCF6QUGC5wWKI5YVKR5ovWL7CPZX6zvXC5KPMDBYXVFwgXOB4QWFC9GPC65pKC5aBLC/4X/C54A/ADo"))

192
apps/mandel/mandel.app.js Normal file
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var aux = new Float32Array(8);
var p_aux = E.getAddressOf(aux, true);
aux[0] = -2;
aux[1] = -1.5;
aux[2] = 1;
aux[3] = 1.5;
var buf_height = 40;
var frameX1=0, frameX2=239, frameY1=0, frameY2=239;
var frameCorner = 0;
var imbuf = Graphics.createArrayBuffer(240, buf_height, 16);
var imbufaddr = E.getAddressOf(imbuf.buffer, true);
var mimg = {
width :imbuf.getWidth(),
height:imbuf.getHeight(),
bpp :16,
buffer:imbuf.buffer
};
var c = E.compiledC(`
// void mandel(int, int)
union shortbytes {
short s;
char b[2];
};
void mandel(float *p, short *ib) {
float mincx = p[0];
float mincy = p[1];
float maxcx = p[2];
float maxcy = p[3];
int minx = (int)p[4];
int miny = (int)p[5];
int maxx = (int)p[6];
int maxy = (int)p[7];
int pib = 0;
for (int y=miny; y<maxy; ++y)
for (int x=minx; x<maxx; ++x) {
float cr = mincx+(maxcx-mincx)*x/240.0;
float ci = mincy+(maxcy-mincy)*y/240.0;
float zr=0, zi=0;
char niter = 31;
while (--niter && zr>-2 && zr<1 && zi>-1.5 && zi<1.5) {
float nr = zr*zr-zi*zi + cr;
zi = 2*zr*zi + ci;
zr = nr;
}
union shortbytes c, d;
c.s = niter | (niter << 7)&0x7ff | (niter<<13)&0xffff;
d.b[0] = c.b[1];
d.b[1] = c.b[0];
ib[pib++] = d.s;
}
}
`);
function drawRectangle(x1, y1, x2, y2) {
if (frameCorner==1) g.setColor(1, 0, 0);
else g.setColor(1, 1, 1);
g.drawLine(x1, y1, x2, y1).drawLine(x1, y1, x1, y2);
if (frameCorner==2) g.setColor(1, 0, 0);
else g.setColor(1, 1, 1);
g.drawLine(x1, y2, x2, y2).drawLine(x2, y1, x2, y2);
}
function restoreRow(y) {
mimg.width = 240;
mimg.height = 1;
aux[4] = 0;
aux[5] = y;
aux[6] = 240;
aux[7] = y+1;
c.mandel(p_aux, imbufaddr);
g.drawImage(mimg, 0, y);
}
function restoreCol(x) {
mimg.width = 1;
mimg.height = 240;
aux[4] = x;
aux[5] = 0;
aux[6] = x+1;
aux[7] = 240;
c.mandel(p_aux, imbufaddr);
g.drawImage(mimg, x, 0);
}
function moveUp() {
restoreCol(frameX1);
restoreCol(frameX2);
if (frameCorner==1 && frameY1>3) {
restoreRow(frameY1);
frameY1 -= 4;
}
if (frameCorner==2 && frameY2>3) {
restoreRow(frameY2);
frameY2 -= 4;
}
drawRectangle(frameX1, frameY1, frameX2, frameY2);
}
function moveDown() {
restoreCol(frameX1);
restoreCol(frameX2);
if (frameCorner==1 && frameY1<235) {
restoreRow(frameY1);
frameY1 += 4;
}
if (frameCorner==2 && frameY2<235) {
restoreRow(frameY2);
frameY2 += 4;
}
drawRectangle(frameX1, frameY1, frameX2, frameY2);
}
function moveRight() {
restoreRow(frameY1);
restoreRow(frameY2);
if (frameCorner==1 && frameX1<235) {
restoreCol(frameX1);
frameX1 += 4;
}
if (frameCorner==2 && frameX2<235) {
restoreCol(frameX2);
frameX2 += 4;
}
drawRectangle(frameX1, frameY1, frameX2, frameY2);
}
function moveLeft() {
restoreRow(frameY1);
restoreRow(frameY2);
if (frameCorner==1 && frameX1>3) {
restoreCol(frameX1);
frameX1 -= 4;
}
if (frameCorner==2 && frameX2>3) {
restoreCol(frameX2);
frameX2 -= 4;
}
drawRectangle(frameX1, frameY1, frameX2, frameY2);
}
function toggleFrame() {
if (frameCorner<2) {
frameCorner++;
drawRectangle(frameX1, frameY1, frameX2, frameY2);
}
else {
frameCorner = 0;
var mincx = aux[0] + (aux[2]-aux[0])*frameX1/240.0;
var maxcx = aux[0] + (aux[2]-aux[0])*frameX2/240.0;
var mincy = aux[1] + (aux[3]-aux[1])*frameY1/240.0;
var maxcy = aux[1] + (aux[3]-aux[1])*frameY2/240.0;
aux[0] = mincx;
aux[1] = mincy;
aux[2] = maxcx;
aux[3] = maxcy;
drawIt();
}
}
setWatch(toggleFrame, BTN2, {repeat: true});
setWatch(moveUp, BTN1, {repeat: true});
setWatch(moveDown, BTN3, {repeat: true});
Bangle.on('touch', function(button) {
switch(button) {
case 1: moveLeft(); break;
case 2: moveRight(); break;
}
});
function drawIt() {
aux[4] = 0;
aux[5] = 0;
aux[6] = 240;
aux[7] = buf_height;
mimg.width = 240;
mimg.height = buf_height;
for (var y=0; y<240/buf_height; ++y) {
c.mandel(p_aux, imbufaddr);
aux[5] += buf_height;
aux[7] += buf_height;
g.drawImage(mimg, 0, y*buf_height);
}
}
setTimeout(drawIt, 50);

1
apps/mandel/mandel.info Normal file
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@ -0,0 +1 @@
{"id":"mandel","name":"Mandel","src":"mandel.app.js","icon":"mandel.img"}

163
apps/mandel/mandel.min.js vendored Normal file
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@ -0,0 +1,163 @@
var aux = new Float32Array(8);
var p_aux = E.getAddressOf(aux, true);
aux[0] = -2;
aux[1] = -1.5;
aux[2] = 1;
aux[3] = 1.5;
var buf_height = 40;
var frameX1=0, frameX2=239, frameY1=0, frameY2=239;
var frameCorner = 0;
var imbuf = Graphics.createArrayBuffer(240, buf_height, 16);
var imbufaddr = E.getAddressOf(imbuf.buffer, true);
var mimg = {
width :imbuf.getWidth(),
height:imbuf.getHeight(),
bpp :16,
buffer:imbuf.buffer
};
var c = (function(){
var bin=atob("0O0EepDtAFrQ7QFK0O0COpDtAzqf7URK/e7nei3p8EMX7pBa0O0Fev3u53rF68V8F+6QStDtBnr97ud6ACMX7pCK0O0Hev3u53q47gAqF+6QmvfuABq/7ggaTEVi2gzrAwaeRgHrRgYqRvfuCCqu6wUDQkUTRETaB+4QKnPuxXq47sd6HyNn7od6B+4QSsfuhGq47sd6c+5kenbuhWpn7od6n+0iesfuhFrw7kd6de6kWgE7E/D/AxPQ9O7CevHuEPoO3fTu4Xrx7hD6CdW07sF68e4Q+gTdtO7ievHuEPoR1NgBwPMKAEPqQzMDQ8PzByBg8wcHY/MPJyb4EnABMrXnATSp5yfuR2rw7mUKp+6nanfup3rn7icKdu4merDuYHrG573o8IMAAHBDAAAAAA==");
return {
mandel:E.nativeCall(1, "void(int, int)", bin),
};
})();
function drawRectangle(x1, y1, x2, y2) {
if (frameCorner==1) g.setColor(1, 0, 0);
else g.setColor(1, 1, 1);
g.drawLine(x1, y1, x2, y1).drawLine(x1, y1, x1, y2);
if (frameCorner==2) g.setColor(1, 0, 0);
else g.setColor(1, 1, 1);
g.drawLine(x1, y2, x2, y2).drawLine(x2, y1, x2, y2);
}
function restoreRow(y) {
mimg.width = 240;
mimg.height = 1;
aux[4] = 0;
aux[5] = y;
aux[6] = 240;
aux[7] = y+1;
c.mandel(p_aux, imbufaddr);
g.drawImage(mimg, 0, y);
}
function restoreCol(x) {
mimg.width = 1;
mimg.height = 240;
aux[4] = x;
aux[5] = 0;
aux[6] = x+1;
aux[7] = 240;
c.mandel(p_aux, imbufaddr);
g.drawImage(mimg, x, 0);
}
function moveUp() {
restoreCol(frameX1);
restoreCol(frameX2);
if (frameCorner==1 && frameY1>3) {
restoreRow(frameY1);
frameY1 -= 4;
}
if (frameCorner==2 && frameY2>3) {
restoreRow(frameY2);
frameY2 -= 4;
}
drawRectangle(frameX1, frameY1, frameX2, frameY2);
}
function moveDown() {
restoreCol(frameX1);
restoreCol(frameX2);
if (frameCorner==1 && frameY1<235) {
restoreRow(frameY1);
frameY1 += 4;
}
if (frameCorner==2 && frameY2<235) {
restoreRow(frameY2);
frameY2 += 4;
}
drawRectangle(frameX1, frameY1, frameX2, frameY2);
}
function moveRight() {
restoreRow(frameY1);
restoreRow(frameY2);
if (frameCorner==1 && frameX1<235) {
restoreCol(frameX1);
frameX1 += 4;
}
if (frameCorner==2 && frameX2<235) {
restoreCol(frameX2);
frameX2 += 4;
}
drawRectangle(frameX1, frameY1, frameX2, frameY2);
}
function moveLeft() {
restoreRow(frameY1);
restoreRow(frameY2);
if (frameCorner==1 && frameX1>3) {
restoreCol(frameX1);
frameX1 -= 4;
}
if (frameCorner==2 && frameX2>3) {
restoreCol(frameX2);
frameX2 -= 4;
}
drawRectangle(frameX1, frameY1, frameX2, frameY2);
}
function toggleFrame() {
if (frameCorner<2) {
frameCorner++;
drawRectangle(frameX1, frameY1, frameX2, frameY2);
}
else {
frameCorner = 0;
var mincx = aux[0] + (aux[2]-aux[0])*frameX1/240.0;
var maxcx = aux[0] + (aux[2]-aux[0])*frameX2/240.0;
var mincy = aux[1] + (aux[3]-aux[1])*frameY1/240.0;
var maxcy = aux[1] + (aux[3]-aux[1])*frameY2/240.0;
aux[0] = mincx;
aux[1] = mincy;
aux[2] = maxcx;
aux[3] = maxcy;
drawIt();
}
}
setWatch(toggleFrame, BTN2, {repeat: true});
setWatch(moveUp, BTN1, {repeat: true});
setWatch(moveDown, BTN3, {repeat: true});
Bangle.on('touch', function(button) {
switch(button) {
case 1: moveLeft(); break;
case 2: moveRight(); break;
}
});
function drawIt() {
aux[4] = 0;
aux[5] = 0;
aux[6] = 240;
aux[7] = buf_height;
mimg.width = 240;
mimg.height = buf_height;
for (var y=0; y<240/buf_height; ++y) {
c.mandel(p_aux, imbufaddr);
aux[5] += buf_height;
aux[7] += buf_height;
g.drawImage(mimg, 0, y*buf_height);
}
}
setTimeout(drawIt, 50);