refactor image library, and add primitives for triangle/xxx, image=?, filevideo, etc
This commit is contained in:
Emmanuel Schanzer
parent
e6d399f3a5
commit
279ab270df
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@ -39,7 +39,10 @@ var isFontWeight = function(x){
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var isMode = function(x) {
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return ((isString(x) || isSymbol(x)) &&
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(x.toString().toLowerCase() == "solid" ||
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x.toString().toLowerCase() == "outline"));
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x.toString().toLowerCase() == "outline")) ||
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((jsnums.isReal(x)) &&
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(jsnums.greaterThanOrEqual(x, 0) &&
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jsnums.lessThanOrEqual(x, 255)));
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};
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var isPlaceX = function(x) {
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@ -67,6 +70,24 @@ var isStyle = function(x) {
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// Useful trigonometric functions based on htdp teachpack
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// excess : compute the Euclidean excess
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// Note: If the excess is 0, then C is 90 deg.
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// If the excess is negative, then C is obtuse.
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// If the excess is positive, then C is acuse.
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function excess(sideA, sideB, sideC) {
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return sideA*sideA + sideB*sideB - sideC*sideC;
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}
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// return c^2 = a^2 + b^2 - 2ab cos(C)
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function cosRel(sideA, sideB, angleC) {
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return (sideA*sideA) + (sideB*sideB) - (2*sideA*sideB*Math.cos(angleC * Math.PI/180));
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}
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var less = function(lhs, rhs) {
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return (rhs - lhs) > 0.00001;
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}
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@ -137,7 +158,7 @@ var checkAngle = plt.baselib.check.makeCheckArgumentType(
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var checkMode = plt.baselib.check.makeCheckArgumentType(
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isMode,
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'solid or outline');
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'solid or outline or [0-255]');
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var checkSideCount = plt.baselib.check.makeCheckArgumentType(
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@ -161,10 +182,18 @@ var checkListofColor = plt.baselib.check.makeCheckListofArgumentType(
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//////////////////////////////////////////////////////////////////////
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EXPORTS['image=?'] =
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makePrimitiveProcedure(
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'image=?',
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2,
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function(MACHINE) {
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var img1 = checkImageOrScene(MACHINE,'image=?', 0);
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var img2 = checkImageOrScene(MACHINE,'image=?', 1);
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return img1.equals(img2);
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});
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EXPORTS['image-color?'] =
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makePrimitiveProcedure(
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@ -322,6 +351,40 @@ EXPORTS['image-url'] =
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'image-url');
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EXPORTS['video/url'] =
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makeClosure(
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'video/url',
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1,
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function(MACHINE) {
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var path = checkString(MACHINE, 'video/url', 0);
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PAUSE(
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function(restart) {
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var rawVideo = document.createElement('video');
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rawVideo.src = path.toString();
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rawVideo.addEventListener('canplay', function() {
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restart(function(MACHINE) {
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function pause(){ rawVideo.pause(); return true;};
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finalizeClosureCall(
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MACHINE,
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makeFileVideo(path.toString(), rawVideo));
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// aState.addBreakRequestedListener(pause);
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});
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});
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rawVideo.addEventListener('error', function(e) {
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restart(function(MACHINE) {
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plt.baselib.exceptions.raiseFailure(
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MACHINE,
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plt.baselib.format.format(
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"unable to load ~a: ~a",
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[url,
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e.message]));
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});
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});
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rawVideo.src = path.toString();
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}
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);
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});
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EXPORTS['overlay'] =
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@ -580,6 +643,28 @@ EXPORTS['empty-scene'] =
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true);
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});
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EXPORTS['put-image'] =
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makePrimitiveProcedure(
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'put-image',
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4,
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function(MACHINE) {
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var picture = checkImage(MACHINE, "put-image", 0);
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var x = checkReal(MACHINE, "put-image", 1);
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var y = checkReal(MACHINE, "put-image", 2);
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var background = checkImageOrScene(MACHINE, "place-image", 3);
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if (isScene(background)) {
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return background.add(picture, jsnums.toFixnum(x), background.getHeight() - jsnums.toFixnum(y));
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} else {
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var newScene = makeSceneImage(background.getWidth(),
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background.getHeight(),
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[],
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false);
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newScene = newScene.add(background, background.getWidth()/2, background.getHeight()/2);
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newScene = newScene.add(picture, jsnums.toFixnum(x), background.getHeight() - jsnums.toFixnum(y));
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return newScene;
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}
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});
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EXPORTS['place-image'] =
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@ -598,7 +683,7 @@ EXPORTS['place-image'] =
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background.getHeight(),
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[],
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false);
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newScene = newScene.add(background.updatePinhole(0, 0), 0, 0);
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newScene = newScene.add(background, background.getWidth()/2, background.getHeight()/2);
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newScene = newScene.add(picture, jsnums.toFixnum(x), jsnums.toFixnum(y));
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return newScene;
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}
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@ -632,7 +717,7 @@ EXPORTS['place-image/align'] =
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background.getHeight(),
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[],
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false);
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newScene = newScene.add(background.updatePinhole(0, 0), 0, 0);
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newScene = newScene.add(background, background.getWidth()/2, background.getHeight()/2);
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newScene = newScene.add(img, jsnums.toFixnum(x), jsnums.toFixnum(y));
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return newScene;
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}
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@ -786,15 +871,17 @@ EXPORTS['scene+line'] =
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var newScene = makeSceneImage(jsnums.toFixnum(img.getWidth()),
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jsnums.toFixnum(img.getHeight()),
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[],
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true);
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newScene = newScene.add(img.updatePinhole(0, 0), 0, 0);
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false);
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newScene = newScene.add(img, img.getWidth()/2, img.getHeight()/2);
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// make an image containing the line
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var line = makeLineImage(jsnums.toFixnum(x2-x1),
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jsnums.toFixnum(y2-y1),
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c,
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false);
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false),
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leftMost = Math.min(x1,x2),
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topMost = Math.min(y1,y2);
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// add the line to scene, offset by the original amount
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return newScene.add(line, jsnums.toFixnum(x1), jsnums.toFixnum(y1));
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return newScene.add(line, line.getWidth()/2+leftMost, line.getHeight()/2+topMost);
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});
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@ -836,8 +923,26 @@ EXPORTS['rectangle'] =
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s.toString(),
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c);
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});
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/*
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need to port over checks for isListofPosns and isListOfLength
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EXPORTS['polygon'] =
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makePrimitiveProcedure(
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'polygon',
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3,
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function(MACHINE) {
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function isPosnList(lst){ return isListOf(lst, types.isPosn); }
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var points = checkListOfLength(MACHINE, "polygon", 0);
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var points = checkListOfPosns(MACHINE, "polygon", 0);
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var s = checkMode(MACHINE, "polygon", 2);
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var c = checkColor(MACHINE, "polygon", 3);
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return makePosnImage(points,
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s.toString(),
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c);
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});
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*/
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EXPORTS['regular-polygon'] =
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makePrimitiveProcedure(
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'regular-polygon',
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@ -881,12 +986,217 @@ EXPORTS['triangle'] =
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var m = checkMode(MACHINE, "triangle", 1);
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var c = checkColor(MACHINE, "triangle", 2);
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return makeTriangleImage(jsnums.toFixnum(s),
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60,
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jsnums.toFixnum(360-60),
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jsnums.toFixnum(s),
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m.toString(),
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c);
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});
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EXPORTS['triangle/sas'] =
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makePrimitiveProcedure(
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'triangle/sas',
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5,
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function(MACHINE) {
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var sideA = checkNonNegativeReal(MACHINE, "triangle/sas", 0);
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var angleB = checkAngle(MACHINE, "triangle/sas", 1);
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var sideC = checkNonNegativeReal(MACHINE, "triangle/sas", 2);
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var style = checkMode(MACHINE, "triangle/sas", 3);
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var color = checkColor(MACHINE, "triangle/sas", 4);
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// cast to fixnums
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sideA = jsnums.toFixnum(sideA); angleB = jsnums.toFixnum(angleB); sideC = jsnums.toFixnum(sideC);
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var sideB2 = cosRel(sideA, sideC, angleB);
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var sideB = Math.sqrt(sideB2);
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if (sideB2 <= 0) {
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raise( types.incompleteExn(types.exnFailContract, "The given side, angle and side will not form a triangle: "
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+ sideA + ", " + angleB + ", " + sideC, []) );
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} else {
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if (less(sideA + sideC, sideB) ||
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less(sideB + sideC, sideA) ||
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less(sideA + sideB, sideC)) {
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raise( types.incompleteExn(types.exnFailContract, "The given side, angle and side will not form a triangle: "
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+ sideA + ", " + angleB + ", " + sideC, []) );
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}
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}
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var angleA = Math.acos(excess(sideB, sideC, sideA) / (2 * sideB * sideC)) * (180 / Math.PI);
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return makeTriangleImage(jsnums.toFixnum(sideC),
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jsnums.toFixnum(angleA),
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jsnums.toFixnum(sideB),
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style.toString(),
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color);
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});
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EXPORTS['triangle/sss'] =
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makePrimitiveProcedure(
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'triangle/sss',
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5,
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function(MACHINE) {
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var sideA = checkNonNegativeReal(MACHINE, "triangle/sss", 0);
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var sideB = checkNonNegativeReal(MACHINE, "triangle/sss", 1);
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var sideC = checkNonNegativeReal(MACHINE, "triangle/sss", 2);
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var style = checkMode(MACHINE, "triangle/sss", 3);
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var color = checkColor(MACHINE, "triangle/sss", 4);
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// cast to fixnums
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sideA = jsnums.toFixnum(sideA); sideB = jsnums.toFixnum(sideB); sideC = jsnums.toFixnum(sideC);
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if (less(sideA + sideB, sideC) ||
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less(sideC + sideB, sideA) ||
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less(sideA + sideC, sideB)) {
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raise( types.incompleteExn(types.exnFailContract, "The given sides will not form a triangle: "
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+ sideA+", "+sideB+", "+sideC, []) );
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}
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var angleA = Math.acos(excess(sideB, sideC, sideA) / (2 * sideB * sideC)) * (180 / Math.PI);
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return makeTriangleImage(jsnums.toFixnum(sideC),
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jsnums.toFixnum(angleA),
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jsnums.toFixnum(sideB),
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style.toString(),
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color);
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});
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EXPORTS['triangle/ass'] =
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makePrimitiveProcedure(
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'triangle/ass',
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5,
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function(MACHINE) {
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var angleA = checkAngle(MACHINE, "triangle/ass", 0);
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var sideB = checkNonNegativeReal(MACHINE, "triangle/ass", 1);
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var sideC = checkNonNegativeReal(MACHINE, "triangle/ass", 2);
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var style = checkMode(MACHINE, "triangle/ass", 3);
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var color = checkColor(MACHINE, "triangle/ass", 4);
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// cast to fixnums
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angleA = jsnums.toFixnum(angleA); sideB = jsnums.toFixnum(sideB); sideC = jsnums.toFixnum(sideC);
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if (colorDb.get(color)) { color = colorDb.get(color); }
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if (less(180, angleA)) {
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raise( types.incompleteExn(types.exnFailContract, "The given angle, side and side will not form a triangle: "
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+ angleA + ", " + sideB + ", " + sideC, []) );
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}
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return makeTriangleImage(jsnums.toFixnum(sideC),
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jsnums.toFixnum(angleA),
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jsnums.toFixnum(sideB),
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style.toString(),
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color);
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});
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EXPORTS['triangle/ssa'] =
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makePrimitiveProcedure(
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'triangle/ssa',
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5,
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function(MACHINE) {
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var sideA = checkNonNegativeReal(MACHINE, "triangle/ssa", 0);
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var sideB = checkNonNegativeReal(MACHINE, "triangle/ssa", 1);
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var angleC = checkAngle(MACHINE, "triangle/ssa", 2);
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var style = checkMode(MACHINE, "triangle/ssa", 3);
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var color = checkColor(MACHINE, "triangle/ssa", 4);
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// cast to fixnums
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sideA = jsnums.toFixnum(sideA); sideB = jsnums.toFixnum(sideB); angleC = jsnums.toFixnum(angleC);
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if (less(180, angleC)) {
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raise( types.incompleteExn(types.exnFailContract, "The given side, side and angle will not form a triangle: "
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+ sideA + ", " + sideB + ", " + angleC, []) );
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}
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var sideC2 = cosRel(sideA, sideB, angleC);
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var sideC = Math.sqrt(sideC2);
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if (sideC2 <= 0) {
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raise( types.incompleteExn(types.exnFailContract, "The given side, side and angle will not form a triangle: "
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+ sideA + ", " + sideB + ", " + angleC, []) );
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} else {
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if (less(sideA + sideB, sideC) ||
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less(sideC + sideB, sideA) ||
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less(sideA + sideC, sideB)) {
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raise( types.incompleteExn(types.exnFailContract, "The given side, side and angle will not form a triangle: "
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+ sideA + ", " + sideB + ", " + angleC, []) );
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}
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}
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var angleA = Math.acos(excess(sideB, sideC, sideA) / (2 * sideB * sideC)) * (180 / Math.PI);
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return makeTriangleImage(jsnums.toFixnum(sideC),
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jsnums.toFixnum(angleA),
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jsnums.toFixnum(sideB),
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style.toString(),
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color);
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});
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EXPORTS['triangle/aas'] =
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makePrimitiveProcedure(
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'triangle/aas',
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5,
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function(MACHINE) {
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var angleA = checkAngle(MACHINE, "triangle/aas", 0);
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var angleB = checkAngle(MACHINE, "triangle/aas", 1);
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var sideC = checkNonNegativeReal(MACHINE, "triangle/aas", 2);
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var style = checkMode(MACHINE, "triangle/aas", 3);
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var color = checkColor(MACHINE, "triangle/aas", 4);
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// cast to fixnums
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var angleA = jsnums.toFixnum(angleA); angleB = jsnums.toFixnum(angleB); sideC = jsnums.toFixnum(sideC);
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var angleC = (180 - angleA - angleB);
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if (less(angleC, 0)) {
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raise( types.incompleteExn(types.exnFailContract, "The given angle, angle and side will not form a triangle: "
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+ angleA + ", " + angleB + ", " + sideC, []) );
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}
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var hypotenuse = sideC / (Math.sin(angleC*Math.PI/180))
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var sideB = hypotenuse * Math.sin(angleB*Math.PI/180);
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return makeTriangleImage(jsnums.toFixnum(sideC),
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jsnums.toFixnum(angleA),
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jsnums.toFixnum(sideB),
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style.toString(),
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color);
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});
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EXPORTS['triangle/asa'] =
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makePrimitiveProcedure(
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'triangle/asa',
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5,
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function(MACHINE) {
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var angleA = checkAngle(MACHINE, "triangle/asa", 0);
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var sideB = checkNonNegativeReal(MACHINE, "triangle/asa", 1);
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var angleC = checkAngle(MACHINE, "triangle/asa", 2);
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var style = checkMode(MACHINE, "triangle/asa", 3);
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var color = checkColor(MACHINE, "triangle/asa", 4);
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// cast to fixnums
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var angleA = jsnums.toFixnum(angleA); sideB = jsnums.toFixnum(sideB); angleC = jsnums.toFixnum(angleC);
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var angleB = (180 - angleA - angleC);
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if (less(angleB, 0)) {
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raise( types.incompleteExn(types.exnFailContract, "The given angle, side and angle will not form a triangle: "
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+ angleA + ", " + sideB + ", " + angleC, []) );
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}
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var base = (sideB * Math.sin(angleA*Math.PI/180)) / (Math.sin(angleB*Math.PI/180));
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var sideC = (sideB * Math.sin(angleC*Math.PI/180)) / (Math.sin(angleB*Math.PI/180));
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return makeTriangleImage(jsnums.toFixnum(sideC),
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jsnums.toFixnum(angleA),
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jsnums.toFixnum(sideB),
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style.toString(),
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color);
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});
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EXPORTS['triangle/saa'] =
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makePrimitiveProcedure(
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'triangle/saa',
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5,
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function(MACHINE) {
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var sideA = checkNonNegativeReal(MACHINE, "triangle/saa", 0);
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var angleB = checkAngle(MACHINE, "triangle/saa", 1);
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var angleC = checkAngle(MACHINE, "triangle/saa", 2);
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var style = checkMode(MACHINE, "triangle/saa", 3);
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var color = checkColor(MACHINE, "triangle/saa", 4);
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// cast to fixnums
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var sideA = jsnums.toFixnum(sideA); angleB = jsnums.toFixnum(angleB); angleC = jsnums.toFixnum(angleC);
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var angleA = (180 - angleC - angleB);
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var hypotenuse = sideA / (Math.sin(angleA*Math.PI/180));
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var sideC = hypotenuse * Math.sin(angleC*Math.PI/180);
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var sideB = hypotenuse * Math.sin(angleB*Math.PI/180);
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return makeTriangleImage(jsnums.toFixnum(sideC),
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jsnums.toFixnum(angleA),
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jsnums.toFixnum(sideB),
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||||
style.toString(),
|
||||
color);
|
||||
});
|
||||
|
||||
|
||||
|
||||
EXPORTS['right-triangle'] =
|
||||
makePrimitiveProcedure(
|
||||
'right-triangle',
|
||||
|
|
@ -896,7 +1206,8 @@ EXPORTS['right-triangle'] =
|
|||
var side2 = checkNonNegativeReal(MACHINE, "right-triangle", 1);
|
||||
var s = checkMode(MACHINE, "right-triangle", 2);
|
||||
var c = checkColor(MACHINE, "right-triangle", 3);
|
||||
return makeRightTriangleImage(jsnums.toFixnum(side1),
|
||||
return makeTriangleImage(jsnums.toFixnum(side1),
|
||||
jsnums.toFixnum(360-90),
|
||||
jsnums.toFixnum(side2),
|
||||
s.toString(),
|
||||
c);
|
||||
|
|
@ -909,11 +1220,16 @@ EXPORTS['isosceles-triangle'] =
|
|||
4,
|
||||
function(MACHINE) {
|
||||
var side = checkNonNegativeReal(MACHINE, "isosceles-triangle", 0);
|
||||
var angle = checkAngle(MACHINE, "isosceles-triangle", 1);
|
||||
var angleC = checkAngle(MACHINE, "isosceles-triangle", 1);
|
||||
var s = checkMode(MACHINE, "isosceles-triangle", 2);
|
||||
var c = checkColor(MACHINE, "isosceles-triangle", 3);
|
||||
return makeTriangleImage(jsnums.toFixnum(side),
|
||||
jsnums.toFixnum(angle),
|
||||
// cast to fixnums
|
||||
side = jsnums.toFixnum(side); angleC = jsnums.toFixnum(angleC);
|
||||
var angleAB = (180-angleC)/2;
|
||||
var base = 2*side*Math.sin((angleC*Math.PI/180)/2);
|
||||
return makeTriangleImage(jsnums.toFixnum(base),
|
||||
jsnums.toFixnum(360-angleAB),// add 180 to make the triangle point up
|
||||
jsnums.toFixnum(side),
|
||||
s.toString(),
|
||||
c);
|
||||
});
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -16,7 +16,8 @@
|
|||
bitmap/url
|
||||
image-url ;; older name for bitmap/url
|
||||
open-image-url ;; older name for bitmap/url
|
||||
|
||||
video/url
|
||||
play-sound
|
||||
overlay
|
||||
overlay/xy
|
||||
overlay/align
|
||||
|
|
@ -28,6 +29,7 @@
|
|||
above
|
||||
above/align
|
||||
empty-scene
|
||||
put-image
|
||||
place-image
|
||||
place-image/align
|
||||
rotate
|
||||
|
|
@ -43,9 +45,17 @@
|
|||
circle
|
||||
square
|
||||
rectangle
|
||||
polygon
|
||||
regular-polygon
|
||||
ellipse
|
||||
triangle
|
||||
triangle/sas
|
||||
triangle/sss
|
||||
triangle/ass
|
||||
triangle/ssa
|
||||
triangle/aas
|
||||
triangle/asa
|
||||
triangle/saa
|
||||
right-triangle
|
||||
isosceles-triangle
|
||||
star
|
||||
|
|
@ -66,6 +76,6 @@
|
|||
side-count?
|
||||
step-count?
|
||||
image?
|
||||
|
||||
image=?
|
||||
name->color
|
||||
))
|
||||
|
|
|
|||
|
|
@ -15,6 +15,7 @@
|
|||
above
|
||||
above/align
|
||||
empty-scene
|
||||
put-image
|
||||
place-image
|
||||
place-image/align
|
||||
rotate
|
||||
|
|
@ -30,9 +31,17 @@
|
|||
circle
|
||||
square
|
||||
rectangle
|
||||
polygon
|
||||
regular-polygon
|
||||
ellipse
|
||||
triangle
|
||||
triangle/sas
|
||||
triangle/sss
|
||||
triangle/ass
|
||||
triangle/ssa
|
||||
triangle/aas
|
||||
triangle/asa
|
||||
triangle/saa
|
||||
right-triangle
|
||||
isosceles-triangle
|
||||
star
|
||||
|
|
@ -51,11 +60,14 @@
|
|||
angle?
|
||||
side-count?
|
||||
image?
|
||||
image=?
|
||||
;; Something funky is happening on the Racket side of things with regards
|
||||
;; to step-count? See: http://bugs.racket-lang.org/query/?cmd=view&pr=12031
|
||||
;; step-count?
|
||||
|
||||
bitmap/url
|
||||
video/url
|
||||
play-sound
|
||||
|
||||
name->color
|
||||
|
||||
|
|
@ -99,6 +111,7 @@
|
|||
above
|
||||
above/align
|
||||
empty-scene
|
||||
put-image
|
||||
place-image
|
||||
place-image/align
|
||||
rotate
|
||||
|
|
@ -114,9 +127,17 @@
|
|||
circle
|
||||
square
|
||||
rectangle
|
||||
polygon
|
||||
regular-polygon
|
||||
ellipse
|
||||
triangle
|
||||
triangle/sas
|
||||
triangle/sss
|
||||
triangle/ass
|
||||
triangle/ssa
|
||||
triangle/aas
|
||||
triangle/asa
|
||||
triangle/saa
|
||||
right-triangle
|
||||
isosceles-triangle
|
||||
star
|
||||
|
|
@ -136,10 +157,13 @@
|
|||
side-count?
|
||||
|
||||
image?
|
||||
image=?
|
||||
;; Something funky is happening on the Racket side of things with regards
|
||||
;; to step-count? See: http://bugs.racket-lang.org/query/?cmd=view&pr=12031
|
||||
;; step-count?
|
||||
bitmap/url
|
||||
video/url
|
||||
play-sound
|
||||
name->color
|
||||
step-count?
|
||||
image-url
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user