提问CityEngine规则文件错误

1个月前发布

CityEngine – Rule File error – Esri Community

我正在使用 CityEngine 版本 2024，并且在以下功能上出现意外的令牌错误：

Lot -->

// Apply setbacks using positional parameters (front, right, back, left)

setback(SETBACK_F, SETBACK_S, SETBACK_R, SETBACK_S)

{ remainder: Footprint | inside: NIL }

完整代码：

// ------------------------------------------------------------
// CityEngine CGA — Simple Massing from Attributes
// Corrected and Refactored for CityEngine 2024
// ------------------------------------------------------------
version "2024.0"

// ==== INPUT ATTRIBUTES (map to your columns) ====
attr PRJ_NAME   = ""
attr BLDG_ID    = ""
attr PARCEL_ID  = ""
attr B_USE_CODE = ""

attr TFLR_H       = 3.5     // Typical floor height (m)
attr RTL_FLR_HM   = 5.0     // Retail floor height (m)
attr retailFloors = 1       // Number of retail floors (0 = none)

attr BLDG_HT_M  = 0.0       // Used in ByHeight
attr FLR_COUNT  = 0         // Used in ByFloors
attr GFA_TOTAL  = 0.0       // Used in ByGFA
attr FAR        = 0.0       // (Optional) Not used in this version

attr LGFLR_CNT  = 0         // Basements count (extruded down)

// Setbacks (m)
attr SETBACK_F  = 0.0
attr SETBACK_S  = 0.0
attr SETBACK_R  = 0.0

// Scenario selector: "ByHeight" | "ByFloors" | "ByGFA"
attr scenario   = "ByHeight"

// =============================================================
// ==== START RULE ====
// =============================================================
@StartRule
Lot -->
    // Apply setbacks using positional parameters (front, right, back, left)
    setback(SETBACK_F, SETBACK_S, SETBACK_R, SETBACK_S)
    { remainder: Footprint | inside: NIL }

// =============================================================
// ==== MAIN LOGIC ====
// =============================================================
Footprint -->
    case scenario == "ByFloors" && FLR_COUNT > 0:
        BuildByFloors
    case scenario == "ByGFA" && GFA_TOTAL > 0:
        BuildByGFA
    else: // "ByHeight" is the default
        BuildByHeight

// -------------------------------------------------------------
// Scenario 1: Build using a specific floor count
// -------------------------------------------------------------
BuildByFloors -->
    BasementsThenAbove(
        min(retailFloors, FLR_COUNT) * RTL_FLR_HM,                         // podiumH
        max(0, FLR_COUNT - min(retailFloors, FLR_COUNT)) * TFLR_H,         // typicalH
        max(0, FLR_COUNT - min(retailFloors, FLR_COUNT))                   // typicalFloors
    )

// -------------------------------------------------------------
// Scenario 2: Build by estimating floors from a target GFA
// -------------------------------------------------------------
BuildByGFA -->
    case geometry.area > 0 && GFA_TOTAL > 0:
        BasementsThenAbove(
            min(retailFloors, max(1, ceil(GFA_TOTAL / geometry.area))) * RTL_FLR_HM,
            max(0, max(1, ceil(GFA_TOTAL / geometry.area)) - min(retailFloors, max(1, ceil(GFA_TOTAL / geometry.area)))) * TFLR_H,
            max(0, max(1, ceil(GFA_TOTAL / geometry.area)) - min(retailFloors, max(1, ceil(GFA_TOTAL / geometry.area))))
        )
    else:
        NIL

// -------------------------------------------------------------
// Scenario 3: Build by deriving floor counts from a total height
// -------------------------------------------------------------
BuildByHeight -->
    // If retail fits, build podium then typical; else all typical
    case retailFloors > 0 && BLDG_HT_M >= RTL_FLR_HM:
        BasementsThenAbove(
            retailFloors * RTL_FLR_HM,                                                 // podiumH
            floor(max(0, BLDG_HT_M - retailFloors * RTL_FLR_HM) / TFLR_H + 0.0001) * TFLR_H,
            floor(max(0, BLDG_HT_M - retailFloors * RTL_FLR_HM) / TFLR_H + 0.0001)
        )
    else:
        BasementsThenAbove(
            0,                                                                          // podiumH
            floor(max(0, BLDG_HT_M) / TFLR_H + 0.0001) * TFLR_H,
            floor(max(0, BLDG_HT_M) / TFLR_H + 0.0001)
        )

// =============================================================
// ==== BUILDING GEOMETRY GENERATION ====
// =============================================================
BasementsThenAbove(podiumH, typicalH, typicalFloors) -->
    case LGFLR_CNT > 0:
        split(y){ -LGFLR_CNT * TFLR_H : Basement | ~1 : Above(podiumH, typicalH, typicalFloors) }
    else:
        Above(podiumH, typicalH, typicalFloors)

Basement -->
    extrude(-LGFLR_CNT * TFLR_H)
    color(0.3, 0.3, 0.3)

// This rule creates the above-ground building mass
Above(podiumH, typicalH, typicalFloors) -->
    case podiumH > 0 && typicalH > 0:
        split(y){ podiumH : Podium | typicalH : Tower(typicalFloors) }
    case podiumH > 0: // Only a podium exists
        Podium
    case typicalH > 0: // Only a tower exists
        Tower(typicalFloors)
    else:
        NIL

Podium -->
    extrude(scope.sy)
    color(1, 0.92, 0.75)

Tower(typicalFloors) -->
    case typicalFloors > 0:
        extrude(typicalFloors * TFLR_H)
        color(0.8, 0.9, 1.0)
        split(y){ TFLR_H : Typical }*
    else:
        NIL

// =============================================================
// ==== COMPONENT DEFINITIONS (Detailing) ====
// =============================================================
Typical -->
    comp(f){ side: Facade | top: Roof | bottom: FloorPlate }

Facade     --> color(0.85, 0.9, 1)
Roof       --> color(0.7, 0.7, 0.7)
FloorPlate --> color(0.9, 0.9, 0.9)

回复：

挫折操作的语法与 CGA 规则中的语法不同。如果您需要每侧的单独挫折，请参阅挫折 CGA 参考底部的示例。

以下是基本片段：

@Range(min=1, max=25)
attr setback_front = 10
@Range(min=1, max=25)
attr setback_left = 3
@Range(min=1, max=25)
attr setback_right = 2
@Range(min=1, max=25)
attr setback_back = 5

const dists = comp(fe)
	{ front : setback_front
	| left: setback_left
	| right: setback_right
	| back: setback_back }

@StartRule
Lot --> setback(dists) { all       = Garden.   |
                         remainder : Building }
                         
Building -->
	extrude(15)

您对 setback 操作的调用需要遵循正确的语法： setback 操作 – ArcGIS CityEngine 资源 | 文档。
您可能正在寻找类似这样的内容？

setback(SETBACK_F){front: NIL | remainder: 
	setback(SETBACK_R){back: NIL | remainder:
		setback(SETBACK_S){left: NIL | remainder: 
                 setback(SETBACK_S){right: NIL | remainder:Footprint}}}}