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continuing to absorb image implementation

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This commit is contained in:
Danny Yoo 2011-07-13 14:45:10 -04:00
parent a853b45d59
commit 7c8e24133d
3 changed files with 202 additions and 122 deletions
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209
image/private/js-impl.js
View File

@ -143,6 +143,9 @@ var checkPointsCount = plt.baselib.check.makeCheckArgumentType(
"positive integer greater than or equal to 2");
var checkListofColor = plt.baselib.check.makeCheckListofArgumenType(
isColor,
'color');
@ -162,6 +165,57 @@ EXPORTS['image-color?'] =
EXPORTS['mode?'] =
makePrimitiveProcedure(
'mode?',
1,
function(MACHINE) {
return isMode(MACHINE.env[MACHINE.env.length - 1]);
});
EXPORTS['x-place?'] =
makePrimitiveProcedure(
'x-place?',
1,
function(MACHINE) {
return isPlaceX(MACHINE.env[MACHINE.env.length - 1]);
});
EXPORTS['y-place?'] =
makePrimitiveProcedure(
'y-place?',
1,
function(MACHINE) {
return isPlaceY(MACHINE.env[MACHINE.env.length - 1]);
});
EXPORTS['angle?'] =
makePrimitiveProcedure(
'angle?',
1,
function(MACHINE) {
return isAngle(MACHINE.env[MACHINE.env.length - 1]);
});
EXPORTS['side-count?'] =
makePrimitiveProcedure(
'side-count?',
1,
function(MACHINE) {
return isSideCount(MACHINE.env[MACHINE.env.length - 1]);
});
EXPORTS['step-count?'] =
makePrimitiveProcedure(
'step-count?',
1,
function(MACHINE) {
return isStepCount(MACHINE.env[MACHINE.env.length - 1]);
});
EXPORTS['text'] =
makePrimitiveProcedure(
'text',
@ -914,113 +968,56 @@ EXPORTS['image->color-list'] =
});
// EXPORTS['color-list->image'] =
// makePrimitiveProcedure(
// 'color-list->image',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['image-width'] =
// makePrimitiveProcedure(
// 'image-width',
// ???,
// function(MACHINE) {
// ...
// });
EXPORTS['color-list->image'] =
makePrimitiveProcedure(
'color-list->image',
5,
function(MACHINE) {
var listOfColors = checkListOfColor(MACHINE, 'color-list->image', 0);
var width = checkNatural(MACHINE, 'color-list->image', 1);
var height = checkNatural(MACHINE, 'color-list->image', 2);
var pinholeX = checkNatural(MACHINE, 'color-list->image', 3);
var pinholeY = checkNatural(MACHINE, 'color-list->image', 4);
return colorListToImage(listOfColors,
width,
height,
pinholeX,
pinholeY);
});
EXPORTS['image-width'] =
makePrimitiveProcedure(
'image-width',
1,
function(MACHINE) {
var img = checkImage(MACHINE, 'image-width', 0);
return img.getWidth();
});
EXPORTS['image-height'] =
makePrimitiveProcedure(
'image-height',
1,
function(MACHINE) {
var img = checkImage(MACHINE, 'image-height', 0);
return img.getHeight();
});
EXPORTS['image-baseline'] =
makePrimitiveProcedure(
'image-baseline',
1,
function(MACHINE) {
var img = checkImage(MACHINE, 'image-baseline', 0);
return img.getBaseline();
});
// EXPORTS['image-height'] =
// makePrimitiveProcedure(
// 'image-height',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['image-baseline'] =
// makePrimitiveProcedure(
// 'image-baseline',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['image-color?'] =
// makePrimitiveProcedure(
// 'image-color?',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['mode?'] =
// makePrimitiveProcedure(
// 'mode?',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['x-place?'] =
// makePrimitiveProcedure(
// 'x-place?',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['y-place?'] =
// makePrimitiveProcedure(
// 'y-place?',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['angle?'] =
// makePrimitiveProcedure(
// 'angle?',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['side-count?'] =
// makePrimitiveProcedure(
// 'side-count?',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['image-url'] =
// makePrimitiveProcedure(
// 'image-url',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['open-image-url'] =
// makePrimitiveProcedure(
// 'open-image-url',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['color-list->image'] =
// makePrimitiveProcedure(
// 'color-list->image',
// ???,
// function(MACHINE) {
// ...
// });
// EXPORTS['step-count?'] =
// makePrimitiveProcedure(
// 'step-count?',
// ???,
// function(MACHINE) {
// ...
// });

67
image/private/kernel.js
View File

@ -11,6 +11,7 @@ var isColor = colorStruct.predicate;
var colorRed = function(c) { return colorStruct.accessor(c, 0); };
var colorGreen = function(c) { return colorStruct.accessor(c, 1); };
var colorBlue = function(c) { return colorStruct.accessor(c, 2); };
var colorAlpha = function(c) { return colorStruct.accessor(c, 3); };
//////////////////////////////////////////////////////////////////////
var heir = plt.baselib.heir;
@ -44,9 +45,9 @@ var isColorOrColorString = function(thing) {
var colorString = function(aColor) {
return ("rgb(" +
types.colorRed(aColor) + "," +
types.colorGreen(aColor) + ", " +
types.colorBlue(aColor) + ")");
colorRed(aColor) + "," +
colorGreen(aColor) + ", " +
colorBlue(aColor) + ")");
};
@ -975,7 +976,7 @@ PolygonImage.prototype.equals = function(other, aUnionFind) {
this.step == other.step &&
this.count == other.count &&
this.style == other.style &&
types.equals(this.color, other.color, aUnionFind));
plt.baselib.equality.equals(this.color, other.color, aUnionFind));
};
@ -1087,7 +1088,7 @@ TextImage.prototype.equals = function(other, aUnionFind) {
this.style == other.style &&
this.weight == other.weight &&
this.underline == other.underline &&
types.equals(this.color, other.color, aUnionFind) &&
plt.baselib.equality.equals(this.color, other.color, aUnionFind) &&
this.font == other.font);
};
@ -1144,7 +1145,7 @@ StarImage.prototype.equals = function(other, aUnionFind) {
this.outer == other.outer &&
this.inner == other.inner &&
this.style == other.style &&
types.equals(this.color, other.color, aUnionFind));
plt.baselib.equality.equals(this.color, other.color, aUnionFind));
};
@ -1201,7 +1202,7 @@ TriangleImage.prototype.equals = function(other, aUnionFind) {
this.side == other.side &&
this.angle == other.angle &&
this.style == other.style &&
types.equals(this.color, other.color, aUnionFind));
plt.baselib.equality.equals(this.color, other.color, aUnionFind));
};
/////////////////////////////////////////////////////////////////////
@ -1247,7 +1248,7 @@ RightTriangleImage.prototype.equals = function(other, aUnionFind) {
this.side1 == other.side1 &&
this.side2 == other.side2 &&
this.style == other.style &&
types.equals(this.color, other.color, aUnionFind));
plt.baselib.equality.equals(this.color, other.color, aUnionFind));
};
//////////////////////////////////////////////////////////////////////
@ -1301,7 +1302,7 @@ EllipseImage.prototype.equals = function(other, aUnionFind) {
this.width == other.width &&
this.height == other.height &&
this.style == other.style &&
types.equals(this.color, other.color, aUnionFind));
plt.baselib.equality.equals(this.color, other.color, aUnionFind));
};
@ -1373,7 +1374,7 @@ LineImage.prototype.equals = function(other, aUnionFind) {
this.pinholeY == other.pinholeY &&
this.x == other.x &&
this.y == other.y &&
types.equals(this.color, other.color, aUnionFind));
plt.baselib.equality.equals(this.color, other.color, aUnionFind));
};
@ -1401,13 +1402,38 @@ var imageToColorList = function(img) {
g = data[i+1];
b = data[i+2];
a = data[i+3];
// FIXME: what to do about the alpha component?
colors.push(types.color(r, g, b));
colors.push(makeColor(r, g, b, a));
}
return plt.baselib.lists.makeList.apply(null, colors);
}
var colorListToImage = function(listOfColors,
width,
height,
pinholeX,
pinholeY) {
var canvas = makeCanvas(jsnums.toFixnum(width),
jsnums.toFixnum(height)),
ctx = canvas.getContext("2d"),
imageData = ctx.createImageData(jsnums.toFixnum(width),
jsnums.toFixnum(height)),
data = imageData.data,
aColor, i = 0;
while (listOfColors !== plt.baselib.lists.EMPTY) {
aColor = listOfColors.first;
data[i] = jsnums.toFixnum(colorRed(aColor));
data[i+1] = jsnums.toFixnum(colorGreen(aColor));
data[i+2] = jsnums.toFixnum(colorBlue(aColor));
data[i+3] = jsnums.toFixnum(colorAlpha(aColor));
i += 4;
listOfColors = listOfColors.rest;
};
return makeImageDataImage(imageData);
};
@ -1513,6 +1539,9 @@ var isFileVideo = function(x) { return x instanceof FileVideo; };
///////////////////////////////////////////////////////////////
// Exports
// These functions are available for direct access without the typechecks
// of the Racket-exposed functions.
EXPORTS.makeCanvas = makeCanvas;
@ -1542,9 +1571,6 @@ EXPORTS.StarImage = StarImage;
EXPORTS.colorDb = colorDb;
EXPORTS.makeSceneImage = makeSceneImage;
@ -1570,7 +1596,7 @@ EXPORTS.makeFileImage = makeFileImage;
EXPORTS.makeVideoImage = makeVideoImage;
EXPORTS.imageToColorList = imageToColorList;
EXPORTS.colorListToImage = colorListToImage;
EXPORTS.isImage = isImage;
@ -1602,3 +1628,12 @@ EXPORTS.isFlipImage = isFlipImage;
EXPORTS.isTextImage = isTextImage;
EXPORTS.isFileImage = isFileImage;
EXPORTS.isFileVideo = isFileVideo;
EXPORTS.makeColor = makeColor;
EXPORTS.isColor = isColor;
EXPORTS.colorRed = colorRed;
EXPORTS.colorGreen = colorGreen;
EXPORTS.colorBlue = colorBlue;
EXPORTS.colorAlpha = colorAlpha;

48
js-assembler/runtime-src/baselib-check.js
View File

@ -4,6 +4,12 @@
var exports = {};
baselib.check = exports;
var EMPTY = plt.baselib.lists.EMPTY;
var isPair = plt.baselib.lists.isPair;
var makeLowLevelEqHash = plt.baselib.hash.makeLowLevelEqHash;
//////////////////////////////////////////////////////////////////////
var makeCheckArgumentType = function(predicate, predicateName) {
return function(MACHINE, callerName, position) {
@ -19,6 +25,47 @@
};
var makeCheckListofArgumentType = function(predicate, predicateName) {
var listPredicate = function(x) {
var seen = makeLowLevelEqHash();
while (true) {
if (x === EMPTY){
return true;
}
if (!isPair(x)) {
return false;
}
if(seen.containsKey(x)) {
// raise an error? we've got a cycle!
return false
}
if (! predicate(x.first)) {
return false;
}
seen.put(x, true);
x = x.rest;
}
};
return function(MACHINE, callerName, position) {
testArgument(
MACHINE,
'list of ' + predicateName,
listPredicate,
MACHINE.env[MACHINE.env.length - 1 - position],
position,
callerName);
return MACHINE.env[MACHINE.env.length - 1 - position];
}
};
// testArgument: (X -> boolean) X number string string -> boolean
// Produces true if val is true, and otherwise raises an error.
@ -131,6 +178,7 @@
exports.testArgument = testArgument;
exports.testArity = testArity;
exports.makeCheckArgumentType = makeCheckArgumentType;
exports.makeCheckListofArgumentType = makeCheckListofArgumentType;
exports.checkOutputPort = checkOutputPort;
exports.checkString = checkString;