{ "id": "chop_to_sop", "name": "CHOP to SOP", "displayName": "CHOP to SOP", "category": "CHOP", "subcategory": "Generators", "version": "", "lastUpdated": "2025-08-07T07:49:58.269Z", "sourceFile": "C:\\Program Files\\Derivative\\TouchDesigner\\Samples\\Learn\\OfflineHelp\\https.docs.derivative.ca\\CHOP_to_SOP.htm", "url": "", "description": "The CHOP to SOP takes CHOP channels and generates 3D polygons in a SOP. It reads sample data from a CHOP and converts it into point positions and point attributes. This makes it complementary to the SOP to CHOP. The Channels created by the SOP to CHOP can be modified and then re-inserted into the SOP network via a CHOP to SOP.", "summary": "The CHOP to SOP takes CHOP channels and generates 3D polygons in a SOP. It reads sample data from a CHOP and converts it into point positions and point attributes. This makes it complementary to the S", "details": "", "usage": "", "tips": [], "warnings": [], "parameters": [ { "id": null, "name": "Group", "label": "Group", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [ "chop" ], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "Modify only the points within this point group.", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.263Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "CHOP", "label": "CHOP", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "chop - Specifies which Network / contains the sample data to fetch.", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.267Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "Start Position", "label": "Start Position", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "startpos - - Sets the bounds for positions that are not defined by a channel, ie. a channel is not set to one of the P attributes.\n\n startposx - startposy - startposz -", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.268Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "X", "label": "X", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "startposx - startposy - startposz -", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.268Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "End Position", "label": "End Position", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "endpos - - Sets the bounds for positions that are not defined by a channel, ie. a channel is not set to one of the P attributes.\n\n endposx - endposy - endposz -", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.268Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "Method", "label": "Method", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "method - - The sample data fetch method:\n\n static - Uses one channel for each attribute, and all points use this channel (the first point resides at index 0, the next at 1, and so on). The length of the channels should be at least the number of points modified. animated - Uses one channel per attribute per point. The channels show the animation of each point's position/attribute values. Your channels should be named with 0, 1, 2, 3, etc. at the end of the names to correspond to each point they will replace (e.g., tx0, ty0, tz0, tx1, ty1, tz1). Your should have (number of attributes * number of points) channels in it.", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.268Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "Static", "label": "Static", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "static - Uses one channel for each attribute, and all points use this channel (the first point resides at index 0, the next at 1, and so on). The length of the channels should be at least the number of points modified. animated - Uses one channel per attribute per point. The channels show the animation of each point's position/attribute values. Your channels should be named with 0, 1, 2, 3, etc. at the end of the names to correspond to each point they will replace (e.g., tx0, ty0, tz0, tx1, ty1, tz1). Your should have (number of attributes * number of points) channels in it.", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.268Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "Channel Scope", "label": "Channel Scope", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "chanscope - The names to use to modify the attributes.", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.268Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "Attribute Scope", "label": "Attribute Scope", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "attscope - A string list of attributes to modify in the . List of Common :\t\nP - position (X, Y, Z) - 3 values\nPw - weight - 1 value\nCd - color (red, green, blue, alpha) - 4 values\nN - normal (X, Y, Z) - 3 values\nuv - texture coordinates (U, V, W) - 3 valuesSee Attributes for a complete listing of attributes.", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.268Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "Organize by Attribute", "label": "Organize by Attribute", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "organize - Instead of using the point index, use the value of this attribute as the index to use when looking up into the .", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.268Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "Mapping", "label": "Mapping", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "mapping - - Determines how the samples are mapped to the geometry points.\n\n onetoone - The samples are simply mapped 1-to-1, each sample is mapped to the next point in order. scale - If there are more or less samples than points in the geometry, then the channels are resampled to interpolate values for all the geometry points.", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.268Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "One Sample to Each Point", "label": "One Sample to Each Point", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "onetoone - The samples are simply mapped 1-to-1, each sample is mapped to the next point in order. scale - If there are more or less samples than points in the geometry, then the channels are resampled to interpolate values for all the geometry points.", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.268Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "Compute Normals", "label": "Compute Normals", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "compnml - Creates normals on the geometry.", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.269Z", "rawData": {}, "sourceElement": null }, { "id": null, "name": "Compute Tangents", "label": "Compute Tangents", "group": "General", "page": "", "type": "float", "dataType": "number", "style": "", "defaultValue": null, "minValue": null, "maxValue": null, "step": null, "menuItems": [], "menuLabels": [], "allowCustom": false, "maxLength": null, "pattern": null, "isArray": false, "arraySize": 1, "dimensions": 1, "description": "comptang - Creates tangents on the geometry.", "tooltip": "", "help": "", "units": "", "examples": [], "isReadOnly": false, "isAdvanced": false, "isHidden": false, "isAnimatable": true, "isExpression": false, "isPython": false, "dependsOn": [], "affects": [], "linkedTo": [], "expressionLanguage": "", "defaultExpression": "", "commonExpressions": [], "order": 0, "isVisible": true, "conditionalDisplay": null, "isValid": true, "validationErrors": [], "lastUpdated": "2025-08-07T07:49:58.269Z", "rawData": {}, "sourceElement": null } ], "parameterGroups": {}, "codeExamples": [], "pythonExamples": [], "expressions": [], "commonInputs": [], "commonOutputs": [], "relatedOperators": [], "workflowPatterns": [], "images": [], "videos": [], "assets": [], "keywords": [ "chop", "to", "sop", "takes", "channels", "generates", "polygons", "sop.", "reads", "sample", "data" ], "tags": [ "CHOP", "TouchDesigner", "CHOP to SOP" ], "searchWeight": 1, "contentHash": "", "processingDate": "2025-08-07T07:49:58.269Z", "processingVersion": "1.0.0", "isValid": true, "validationErrors": [] }