import { ScriptGeneratorModule } from './types.js';
import { helpers } from './helpers.js';
export const expressionGenerators: ScriptGeneratorModule = {
setExpression: (params: {
compId: number;
layerIndex: number;
propertyPath: string;
expression: string;
enabled?: boolean;
}) => {
let script = '';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var layer = comp.layer(' + params.layerIndex + ');\n';
script += 'if (!layer) {\n';
script += ' throw new Error("Layer not found");\n';
script += '}\n\n';
script += '// Navigate property path\n';
script += 'var pathParts = "' + helpers.escapeString(params.propertyPath) + '".split(".");\n';
script += 'var prop = layer;\n\n';
script += 'for (var i = 0; i < pathParts.length; i++) {\n';
script += ' var part = pathParts[i];\n';
script += ' // Handle special cases\n';
script += ' if (part === "Transform" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Transform Group");\n';
script += ' } else if (part === "Effects" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Effect Parade");\n';
script += ' } else {\n';
script += ' prop = prop.property(part);\n';
script += ' }\n';
script += ' \n';
script += ' if (!prop) {\n';
script += ' throw new Error("Property not found: " + pathParts.slice(0, i + 1).join("."));\n';
script += ' }\n';
script += '}\n\n';
script += 'if (!prop.canSetExpression) {\n';
script += ' throw new Error("Cannot set expression on this property");\n';
script += '}\n\n';
script += 'prop.expression = "' + helpers.escapeString(params.expression) + '";\n';
if (params.enabled !== undefined) {
script += 'prop.expressionEnabled = ' + params.enabled + ';\n';
}
script += '\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' layerName: layer.name,\n';
script += ' propertyPath: "' + helpers.escapeString(params.propertyPath) + '",\n';
script += ' expressionSet: true,\n';
script += ' enabled: prop.expressionEnabled\n';
script += ' }\n';
script += '};';
return script;
},
getExpression: (params: {
compId: number;
layerIndex: number;
propertyPath: string;
}) => {
let script = '';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var layer = comp.layer(' + params.layerIndex + ');\n';
script += 'if (!layer) {\n';
script += ' throw new Error("Layer not found");\n';
script += '}\n\n';
script += '// Navigate property path\n';
script += 'var pathParts = "' + helpers.escapeString(params.propertyPath) + '".split(".");\n';
script += 'var prop = layer;\n\n';
script += 'for (var i = 0; i < pathParts.length; i++) {\n';
script += ' var part = pathParts[i];\n';
script += ' if (part === "Transform" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Transform Group");\n';
script += ' } else if (part === "Effects" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Effect Parade");\n';
script += ' } else {\n';
script += ' prop = prop.property(part);\n';
script += ' }\n';
script += ' \n';
script += ' if (!prop) {\n';
script += ' throw new Error("Property not found: " + pathParts.slice(0, i + 1).join("."));\n';
script += ' }\n';
script += '}\n\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' expression: prop.expression,\n';
script += ' enabled: prop.expressionEnabled,\n';
script += ' hasExpression: prop.expression !== "",\n';
script += ' canSetExpression: prop.canSetExpression,\n';
script += ' propertyName: prop.name\n';
script += ' }\n';
script += '};';
return script;
},
removeExpression: (params: {
compId: number;
layerIndex: number;
propertyPath: string;
}) => {
let script = '';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var layer = comp.layer(' + params.layerIndex + ');\n';
script += 'if (!layer) {\n';
script += ' throw new Error("Layer not found");\n';
script += '}\n\n';
script += '// Navigate property path\n';
script += 'var pathParts = "' + helpers.escapeString(params.propertyPath) + '".split(".");\n';
script += 'var prop = layer;\n\n';
script += 'for (var i = 0; i < pathParts.length; i++) {\n';
script += ' var part = pathParts[i];\n';
script += ' if (part === "Transform" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Transform Group");\n';
script += ' } else if (part === "Effects" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Effect Parade");\n';
script += ' } else {\n';
script += ' prop = prop.property(part);\n';
script += ' }\n';
script += ' \n';
script += ' if (!prop) {\n';
script += ' throw new Error("Property not found: " + pathParts.slice(0, i + 1).join("."));\n';
script += ' }\n';
script += '}\n\n';
script += 'prop.expression = "";\n\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' layerName: layer.name,\n';
script += ' propertyPath: "' + helpers.escapeString(params.propertyPath) + '",\n';
script += ' expressionRemoved: true\n';
script += ' }\n';
script += '};';
return script;
},
enableExpression: (params: {
compId: number;
layerIndex: number;
propertyPath: string;
enabled: boolean;
}) => {
let script = '';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var layer = comp.layer(' + params.layerIndex + ');\n';
script += 'if (!layer) {\n';
script += ' throw new Error("Layer not found");\n';
script += '}\n\n';
script += '// Navigate property path\n';
script += 'var pathParts = "' + helpers.escapeString(params.propertyPath) + '".split(".");\n';
script += 'var prop = layer;\n\n';
script += 'for (var i = 0; i < pathParts.length; i++) {\n';
script += ' var part = pathParts[i];\n';
script += ' if (part === "Transform" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Transform Group");\n';
script += ' } else if (part === "Effects" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Effect Parade");\n';
script += ' } else {\n';
script += ' prop = prop.property(part);\n';
script += ' }\n';
script += ' \n';
script += ' if (!prop) {\n';
script += ' throw new Error("Property not found: " + pathParts.slice(0, i + 1).join("."));\n';
script += ' }\n';
script += '}\n\n';
script += 'if (!prop.canSetExpression) {\n';
script += ' throw new Error("Cannot set expression on this property");\n';
script += '}\n\n';
script += 'if (prop.expression === "") {\n';
script += ' throw new Error("No expression to enable");\n';
script += '}\n\n';
script += 'prop.expressionEnabled = ' + params.enabled + ';\n\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' layerName: layer.name,\n';
script += ' propertyPath: "' + helpers.escapeString(params.propertyPath) + '",\n';
script += ' enabled: prop.expressionEnabled\n';
script += ' }\n';
script += '};';
return script;
},
batchSetExpressions: (params: {
compId: number;
expressions: Array<{
layerIndex: number;
propertyPath: string;
expression: string;
enabled?: boolean;
}>;
}) => {
let script = '';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var results = [];\n';
script += 'var expressions = ' + JSON.stringify(params.expressions) + ';\n\n';
script += 'for (var i = 0; i < expressions.length; i++) {\n';
script += ' var expr = expressions[i];\n';
script += ' try {\n';
script += ' var layer = comp.layer(expr.layerIndex);\n';
script += ' if (!layer) {\n';
script += ' results.push({\n';
script += ' success: false,\n';
script += ' error: "Layer " + expr.layerIndex + " not found"\n';
script += ' });\n';
script += ' continue;\n';
script += ' }\n';
script += ' \n';
script += ' // Navigate property path\n';
script += ' var pathParts = expr.propertyPath.split(".");\n';
script += ' var prop = layer;\n';
script += ' \n';
script += ' for (var j = 0; j < pathParts.length; j++) {\n';
script += ' var part = pathParts[j];\n';
script += ' if (part === "Transform" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Transform Group");\n';
script += ' } else if (part === "Effects" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Effect Parade");\n';
script += ' } else {\n';
script += ' prop = prop.property(part);\n';
script += ' }\n';
script += ' \n';
script += ' if (!prop) {\n';
script += ' throw new Error("Property not found: " + pathParts.slice(0, j + 1).join("."));\n';
script += ' }\n';
script += ' }\n';
script += ' \n';
script += ' if (!prop.canSetExpression) {\n';
script += ' results.push({\n';
script += ' success: false,\n';
script += ' error: "Cannot set expression on " + expr.propertyPath\n';
script += ' });\n';
script += ' continue;\n';
script += ' }\n';
script += ' \n';
script += ' prop.expression = expr.expression;\n';
script += ' if (expr.enabled !== undefined) {\n';
script += ' prop.expressionEnabled = expr.enabled;\n';
script += ' }\n';
script += ' \n';
script += ' results.push({\n';
script += ' success: true,\n';
script += ' layerIndex: expr.layerIndex,\n';
script += ' propertyPath: expr.propertyPath\n';
script += ' });\n';
script += ' \n';
script += ' } catch (e) {\n';
script += ' results.push({\n';
script += ' success: false,\n';
script += ' error: String(e),\n';
script += ' layerIndex: expr.layerIndex\n';
script += ' });\n';
script += ' }\n';
script += '}\n\n';
script += 'var successCount = 0;\n';
script += 'for (var i = 0; i < results.length; i++) {\n';
script += ' if (results[i].success) successCount++;\n';
script += '}\n\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' total: expressions.length,\n';
script += ' successful: successCount,\n';
script += ' results: results\n';
script += ' }\n';
script += '};';
return script;
},
addExpressionControl: (params: {
compId: number;
layerIndex: number;
controlType: string;
name: string;
value?: any;
}) => {
let script = '';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var layer = comp.layer(' + params.layerIndex + ');\n';
script += 'if (!layer) {\n';
script += ' throw new Error("Layer not found");\n';
script += '}\n\n';
script += 'var effectName;\n';
script += 'var controlType = "' + params.controlType + '";\n\n';
script += 'switch(controlType) {\n';
script += ' case "slider":\n';
script += ' effectName = "ADBE Slider Control";\n';
script += ' break;\n';
script += ' case "point":\n';
script += ' effectName = "ADBE Point Control";\n';
script += ' break;\n';
script += ' case "angle":\n';
script += ' effectName = "ADBE Angle Control";\n';
script += ' break;\n';
script += ' case "checkbox":\n';
script += ' effectName = "ADBE Checkbox Control";\n';
script += ' break;\n';
script += ' case "color":\n';
script += ' effectName = "ADBE Color Control";\n';
script += ' break;\n';
script += ' case "layer":\n';
script += ' effectName = "ADBE Layer Control";\n';
script += ' break;\n';
script += ' case "point3d":\n';
script += ' effectName = "ADBE Point3D Control";\n';
script += ' break;\n';
script += ' default:\n';
script += ' throw new Error("Invalid control type: " + controlType);\n';
script += '}\n\n';
script += 'var effect = layer.property("Effects").addProperty(effectName);\n';
script += 'effect.name = "' + helpers.escapeString(params.name) + '";\n\n';
// Set initial value if provided
if (params.value !== undefined) {
script += '// Set initial value if provided\n';
script += 'var control = effect.property(1);\n';
script += 'if (control) {\n';
if (Array.isArray(params.value)) {
script += ' control.setValue([' + params.value.join(',') + ']);\n';
} else {
script += ' control.setValue(' + params.value + ');\n';
}
script += '}\n\n';
}
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' layerName: layer.name,\n';
script += ' controlName: effect.name,\n';
script += ' controlType: controlType,\n';
script += ' effectIndex: effect.propertyIndex\n';
script += ' }\n';
script += '};';
return script;
},
linkPropertiesWithExpression: (params: {
compId: number;
sourceLayer: number;
sourceProperty: string;
targetLayer: number;
targetProperty: string;
linkType?: string;
multiplier?: number;
offsetValue?: any;
customExpression?: string;
}) => {
let script = '';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var sourceLayer = comp.layer(' + params.sourceLayer + ');\n';
script += 'var targetLayer = comp.layer(' + params.targetLayer + ');\n\n';
script += 'if (!sourceLayer) throw new Error("Source layer not found");\n';
script += 'if (!targetLayer) throw new Error("Target layer not found");\n\n';
script += 'var linkType = "' + (params.linkType || 'direct') + '";\n';
script += 'var expression = "";\n\n';
script += 'switch(linkType) {\n';
script += ' case "direct":\n';
script += ' expression = "thisComp.layer(' + params.sourceLayer + ').transform.' + helpers.escapeString(params.sourceProperty) + '";\n';
script += ' break;\n';
script += ' \n';
script += ' case "inverse":\n';
script += ' expression = "-thisComp.layer(' + params.sourceLayer + ').transform.' + helpers.escapeString(params.sourceProperty) + '";\n';
script += ' break;\n';
script += ' \n';
script += ' case "offset":\n';
script += ' var offsetValue = ' + (params.offsetValue ? JSON.stringify(params.offsetValue) : 'null') + ';\n';
script += ' if (offsetValue) {\n';
script += ' if (Array.isArray(offsetValue)) {\n';
script += ' expression = "thisComp.layer(' + params.sourceLayer + ').transform.' + helpers.escapeString(params.sourceProperty) + ' + [" + offsetValue.join(",") + "]";\n';
script += ' } else {\n';
script += ' expression = "thisComp.layer(' + params.sourceLayer + ').transform.' + helpers.escapeString(params.sourceProperty) + ' + " + offsetValue;\n';
script += ' }\n';
script += ' }\n';
script += ' break;\n';
script += ' \n';
script += ' case "multiply":\n';
script += ' var multiplier = ' + (params.multiplier || 1) + ';\n';
script += ' expression = "thisComp.layer(' + params.sourceLayer + ').transform.' + helpers.escapeString(params.sourceProperty) + ' * " + multiplier;\n';
script += ' break;\n';
script += ' \n';
script += ' case "custom":\n';
script += ' expression = "' + helpers.escapeString(params.customExpression || '') + '";\n';
script += ' break;\n';
script += '}\n\n';
script += '// Apply expression to target property\n';
script += 'var targetProp = targetLayer.property("Transform").property("' + helpers.escapeString(params.targetProperty) + '");\n';
script += 'if (!targetProp) {\n';
script += ' throw new Error("Target property not found");\n';
script += '}\n\n';
script += 'targetProp.expression = expression;\n\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' sourceLayer: sourceLayer.name,\n';
script += ' targetLayer: targetLayer.name,\n';
script += ' linkType: linkType,\n';
script += ' expression: expression\n';
script += ' }\n';
script += '};';
return script;
},
addWiggleExpression: (params: {
compId: number;
layerIndex: number;
propertyPath: string;
frequency?: number;
amplitude?: number;
octaves?: number;
ampMultiplier?: number;
time?: number;
}) => {
let script = '';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var layer = comp.layer(' + params.layerIndex + ');\n';
script += 'if (!layer) {\n';
script += ' throw new Error("Layer not found");\n';
script += '}\n\n';
script += 'var freq = ' + (params.frequency || 5) + ';\n';
script += 'var amp = ' + (params.amplitude || 50) + ';\n';
script += 'var octaves = ' + (params.octaves || 1) + ';\n';
script += 'var ampMult = ' + (params.ampMultiplier || 0.5) + ';\n';
script += 'var timeOffset = ' + (params.time || 0) + ';\n\n';
script += 'var expression = "wiggle(" + freq + ", " + amp;\n\n';
script += 'if (octaves !== 1 || ampMult !== 0.5 || timeOffset !== 0) {\n';
script += ' expression += ", " + octaves + ", " + ampMult;\n';
script += ' if (timeOffset !== 0) {\n';
script += ' expression += ", time + " + timeOffset;\n';
script += ' }\n';
script += '}\n\n';
script += 'expression += ")";\n\n';
script += '// Navigate property path\n';
script += 'var pathParts = "' + helpers.escapeString(params.propertyPath) + '".split(".");\n';
script += 'var prop = layer;\n\n';
script += 'for (var i = 0; i < pathParts.length; i++) {\n';
script += ' var part = pathParts[i];\n';
script += ' if (part === "Transform" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Transform Group");\n';
script += ' } else {\n';
script += ' prop = prop.property(part);\n';
script += ' }\n';
script += ' \n';
script += ' if (!prop) {\n';
script += ' throw new Error("Property not found: " + pathParts.slice(0, i + 1).join("."));\n';
script += ' }\n';
script += '}\n\n';
script += 'prop.expression = expression;\n\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' layerName: layer.name,\n';
script += ' propertyPath: "' + helpers.escapeString(params.propertyPath) + '",\n';
script += ' expression: expression\n';
script += ' }\n';
script += '};';
return script;
},
addLoopExpression: (params: {
compId: number;
layerIndex: number;
propertyPath: string;
loopType?: string;
numKeyframes?: number;
}) => {
let script = '';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var layer = comp.layer(' + params.layerIndex + ');\n';
script += 'if (!layer) {\n';
script += ' throw new Error("Layer not found");\n';
script += '}\n\n';
script += 'var loopType = "' + (params.loopType || 'cycle') + '";\n';
script += 'var numKeyframes = ' + (params.numKeyframes || 0) + ';\n\n';
script += 'var expression = "";\n\n';
script += 'switch(loopType) {\n';
script += ' case "cycle":\n';
script += ' if (numKeyframes > 0) {\n';
script += ' expression = "loopOut(\\"cycle\\", " + numKeyframes + ")";\n';
script += ' } else {\n';
script += ' expression = "loopOut(\\"cycle\\")";\n';
script += ' }\n';
script += ' break;\n';
script += ' \n';
script += ' case "pingpong":\n';
script += ' if (numKeyframes > 0) {\n';
script += ' expression = "loopOut(\\"pingpong\\", " + numKeyframes + ")";\n';
script += ' } else {\n';
script += ' expression = "loopOut(\\"pingpong\\")";\n';
script += ' }\n';
script += ' break;\n';
script += ' \n';
script += ' case "offset":\n';
script += ' if (numKeyframes > 0) {\n';
script += ' expression = "loopOut(\\"offset\\", " + numKeyframes + ")";\n';
script += ' } else {\n';
script += ' expression = "loopOut(\\"offset\\")";\n';
script += ' }\n';
script += ' break;\n';
script += ' \n';
script += ' case "continue":\n';
script += ' if (numKeyframes > 0) {\n';
script += ' expression = "loopOut(\\"continue\\", " + numKeyframes + ")";\n';
script += ' } else {\n';
script += ' expression = "loopOut(\\"continue\\")";\n';
script += ' }\n';
script += ' break;\n';
script += '}\n\n';
script += '// Navigate property path\n';
script += 'var pathParts = "' + helpers.escapeString(params.propertyPath) + '".split(".");\n';
script += 'var prop = layer;\n\n';
script += 'for (var i = 0; i < pathParts.length; i++) {\n';
script += ' var part = pathParts[i];\n';
script += ' if (part === "Transform" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Transform Group");\n';
script += ' } else {\n';
script += ' prop = prop.property(part);\n';
script += ' }\n';
script += ' \n';
script += ' if (!prop) {\n';
script += ' throw new Error("Property not found: " + pathParts.slice(0, i + 1).join("."));\n';
script += ' }\n';
script += '}\n\n';
script += 'if (prop.numKeys < 2) {\n';
script += ' throw new Error("Property must have at least 2 keyframes for loop expression");\n';
script += '}\n\n';
script += 'prop.expression = expression;\n\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' layerName: layer.name,\n';
script += ' propertyPath: "' + helpers.escapeString(params.propertyPath) + '",\n';
script += ' expression: expression,\n';
script += ' loopType: loopType\n';
script += ' }\n';
script += '};';
return script;
},
convertKeyframesToExpression: (params: {
compId: number;
layerIndex: number;
propertyPath: string;
expressionType?: string;
customExpression?: string;
}) => {
let script = '';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var layer = comp.layer(' + params.layerIndex + ');\n';
script += 'if (!layer) {\n';
script += ' throw new Error("Layer not found");\n';
script += '}\n\n';
script += '// Navigate property path\n';
script += 'var pathParts = "' + helpers.escapeString(params.propertyPath) + '".split(".");\n';
script += 'var prop = layer;\n\n';
script += 'for (var i = 0; i < pathParts.length; i++) {\n';
script += ' var part = pathParts[i];\n';
script += ' if (part === "Transform" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Transform Group");\n';
script += ' } else {\n';
script += ' prop = prop.property(part);\n';
script += ' }\n';
script += ' \n';
script += ' if (!prop) {\n';
script += ' throw new Error("Property not found: " + pathParts.slice(0, i + 1).join("."));\n';
script += ' }\n';
script += '}\n\n';
script += 'if (prop.numKeys < 2) {\n';
script += ' throw new Error("Property must have at least 2 keyframes to convert");\n';
script += '}\n\n';
script += 'var expressionType = "' + (params.expressionType || 'linear') + '";\n';
script += 'var expression = "";\n\n';
script += '// Store keyframe data before clearing\n';
script += 'var keyframeData = [];\n';
script += 'for (var i = 1; i <= prop.numKeys; i++) {\n';
script += ' keyframeData.push({\n';
script += ' time: prop.keyTime(i),\n';
script += ' value: prop.keyValue(i)\n';
script += ' });\n';
script += '}\n\n';
script += 'switch(expressionType) {\n';
script += ' case "linear":\n';
script += ' expression = "linear(time, " + keyframeData[0].time + ", " + keyframeData[keyframeData.length-1].time + ", " + \n';
script += ' JSON.stringify(keyframeData[0].value) + ", " + JSON.stringify(keyframeData[keyframeData.length-1].value) + ")";\n';
script += ' break;\n';
script += ' \n';
script += ' case "ease":\n';
script += ' expression = "ease(time, " + keyframeData[0].time + ", " + keyframeData[keyframeData.length-1].time + ", " + \n';
script += ' JSON.stringify(keyframeData[0].value) + ", " + JSON.stringify(keyframeData[keyframeData.length-1].value) + ")";\n';
script += ' break;\n';
script += ' \n';
script += ' case "bounce":\n';
script += ' expression = "// Bounce expression\\n" +\n';
script += ' "amp = .1;\\n" +\n';
script += ' "freq = 2.0;\\n" +\n';
script += ' "decay = 2.0;\\n" +\n';
script += ' "n = 0;\\n" +\n';
script += ' "if (numKeys > 0){\\n" +\n';
script += ' " n = nearestKey(time).index;\\n" +\n';
script += ' " if (key(n).time > time){n--;}\\n" +\n';
script += ' "}\\n" +\n';
script += ' "if (n == 0){ t = 0; }\\n" +\n';
script += ' "else{t = time - key(n).time;}\\n" +\n';
script += ' "if (n > 0 && t < 1){\\n" +\n';
script += ' " v = velocityAtTime(key(n).time - thisComp.frameDuration/10);\\n" +\n';
script += ' " value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);\\n" +\n';
script += ' "}else{value}";\n';
script += ' break;\n';
script += ' \n';
script += ' case "elastic":\n';
script += ' expression = "// Elastic expression\\n" +\n';
script += ' "amp = .05;\\n" +\n';
script += ' "freq = 4.0;\\n" +\n';
script += ' "decay = 7.0;\\n" +\n';
script += ' "n = 0;\\n" +\n';
script += ' "if (numKeys > 0){\\n" +\n';
script += ' " n = nearestKey(time).index;\\n" +\n';
script += ' " if (key(n).time > time){n--;}\\n" +\n';
script += ' "}\\n" +\n';
script += ' "if (n == 0){ t = 0; }\\n" +\n';
script += ' "else{t = time - key(n).time;}\\n" +\n';
script += ' "if (n > 0 && t < 1){\\n" +\n';
script += ' " v = velocityAtTime(key(n).time - thisComp.frameDuration/10);\\n" +\n';
script += ' " value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);\\n" +\n';
script += ' "}else{value}";\n';
script += ' break;\n';
script += ' \n';
script += ' case "custom":\n';
script += ' expression = "' + helpers.escapeString(params.customExpression || '') + '";\n';
script += ' break;\n';
script += '}\n\n';
script += '// Clear keyframes\n';
script += 'while (prop.numKeys > 0) {\n';
script += ' prop.removeKey(1);\n';
script += '}\n\n';
script += '// Set expression\n';
script += 'prop.expression = expression;\n\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' layerName: layer.name,\n';
script += ' propertyPath: "' + helpers.escapeString(params.propertyPath) + '",\n';
script += ' expression: expression,\n';
script += ' originalKeyframes: keyframeData.length\n';
script += ' }\n';
script += '};';
return script;
},
saveExpressionPreset: (params: {
name: string;
expression: string;
category?: string;
description?: string;
parameters?: any[];
}) => {
let script = '';
script += '// This would typically save to a preferences file or database\n';
script += '// For now, we\'ll just return success\n\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' name: "' + helpers.escapeString(params.name) + '",\n';
script += ' category: "' + helpers.escapeString(params.category || 'Custom') + '",\n';
script += ' saved: true\n';
script += ' }\n';
script += '};';
return script;
},
applyExpressionPreset: (params: {
compId: number;
layerIndex: number;
propertyPath: string;
presetName: string;
parameters?: any;
}) => {
let script = '';
script += '// This would typically load from a preferences file or database\n';
script += '// For now, we\'ll just apply a simple expression\n\n';
script += 'var comp = app.project.itemByID(' + params.compId + ');\n';
script += 'if (!comp || !(comp instanceof CompItem)) {\n';
script += ' throw new Error("Composition not found");\n';
script += '}\n\n';
script += 'var layer = comp.layer(' + params.layerIndex + ');\n';
script += 'if (!layer) {\n';
script += ' throw new Error("Layer not found");\n';
script += '}\n\n';
script += '// Navigate property path\n';
script += 'var pathParts = "' + helpers.escapeString(params.propertyPath) + '".split(".");\n';
script += 'var prop = layer;\n\n';
script += 'for (var i = 0; i < pathParts.length; i++) {\n';
script += ' var part = pathParts[i];\n';
script += ' if (part === "Transform" && prop === layer) {\n';
script += ' prop = prop.property("ADBE Transform Group");\n';
script += ' } else {\n';
script += ' prop = prop.property(part);\n';
script += ' }\n';
script += ' \n';
script += ' if (!prop) {\n';
script += ' throw new Error("Property not found: " + pathParts.slice(0, i + 1).join("."));\n';
script += ' }\n';
script += '}\n\n';
script += '// Apply a default expression based on preset name\n';
script += 'var presetName = "' + helpers.escapeString(params.presetName) + '";\n';
script += 'var expression = "// " + presetName + " preset\\nvalue";\n\n';
script += 'prop.expression = expression;\n\n';
script += 'return {\n';
script += ' success: true,\n';
script += ' data: {\n';
script += ' layerName: layer.name,\n';
script += ' propertyPath: "' + helpers.escapeString(params.propertyPath) + '",\n';
script += ' presetName: presetName,\n';
script += ' applied: true\n';
script += ' }\n';
script += '};';
return script;
}
};
