source/Behavior/Dynamics.ts

@@ -7,7 +7,8 @@ type IDynamicsBehaviorParameter = {
     mass: "number",
 	maxAcceleration: "number",
 	maxVelocity: "number",
-	resistance: "number"
+	resistance: "number",
+	limit: "boolean"
 }
 
 type IDynamicsBehaviorEvent = {}
@@ -26,9 +27,16 @@ class Dynamics extends Behavior<IDynamicsBehaviorParameter, IDynamicsBehaviorEve
 
 	public override parameterOption = {
 		mass: { name: "$Mass", type: "number", defaultValue: 1, numberStep: .01, numberMin: .001 },
-		maxAcceleration: { name: "$Max.Acceleration", type: "number", defaultValue: 5, numberStep: .1, numberMin: 0 },
+		resistance: { name: "$Resistance", type: "number", defaultValue: 0.5, numberStep: .1, numberMin: 0 },
-		maxVelocity: { name: "$Max.Velocity", type: "number", defaultValue: 10, numberStep: .1, numberMin: 0 },
+		limit: { name: "$Limit", type: "boolean", defaultValue: true },
-		resistance: { name: "$Resistance", type: "number", defaultValue: 0.5, numberStep: .1, numberMin: 0 }
+		maxAcceleration: {
+			name: "$Max.Acceleration", type: "number", defaultValue: 5, 
+			numberStep: .1, numberMin: 0, condition: { key: "limit", value: true }
+		},
+		maxVelocity: {
+			name: "$Max.Velocity", type: "number", defaultValue: 10,
+			numberStep: .1, numberMin: 0, condition: { key: "limit", value: true }
+		},
 	};
 
 	public override finalEffect = (individual: Individual, group: Group, model: Model, t: number): void => {
@@ -54,12 +62,14 @@ class Dynamics extends Behavior<IDynamicsBehaviorParameter, IDynamicsBehaviorEve
 		individual.acceleration[2] = individual.force[2] / this.parameter.mass;
 
 		// 加速度约束
+		if (this.parameter.limit) {
 			const lengthA = individual.vectorLength(individual.acceleration);
 			if (lengthA > this.parameter.maxAcceleration) {
 				individual.acceleration[0] = individual.acceleration[0] * this.parameter.maxAcceleration / lengthA;
 				individual.acceleration[1] = individual.acceleration[1] * this.parameter.maxAcceleration / lengthA;
 				individual.acceleration[2] = individual.acceleration[2] * this.parameter.maxAcceleration / lengthA;
 			}
+		}
 		
 		// 计算速度
 		individual.velocity[0] = individual.velocity[0] + individual.acceleration[0] * t;
@@ -67,12 +77,14 @@ class Dynamics extends Behavior<IDynamicsBehaviorParameter, IDynamicsBehaviorEve
 		individual.velocity[2] = individual.velocity[2] + individual.acceleration[2] * t;
 
 		// 速度约束
+		if (this.parameter.limit) {
 			const lengthV = individual.vectorLength(individual.velocity);
 			if (lengthV > this.parameter.maxVelocity) {
 				individual.velocity[0] = individual.velocity[0] * this.parameter.maxVelocity / lengthV;
 				individual.velocity[1] = individual.velocity[1] * this.parameter.maxVelocity / lengthV;
 				individual.velocity[2] = individual.velocity[2] * this.parameter.maxVelocity / lengthV;
 			}
+		}
 
 		// 应用速度
 		individual.position[0] = individual.position[0] + individual.velocity[0] * t;
@@ -93,6 +105,10 @@ class Dynamics extends Behavior<IDynamicsBehaviorParameter, IDynamicsBehaviorEve
         "$Intro": {
             "ZH_CN": "一切可以运动物体的必要行为，执行物理法则。",
             "EN_US": "All necessary behaviors that can move objects and implement the laws of physics."
+        },
+		"$Limit": {
+			"ZH_CN": "开启限制",
+            "EN_US": "Enable limit"
 		},
 		"$Mass": {
 			"ZH_CN": "质量 (Kg)",

source/Input/Parameter/Parameter.tsx

@@ -32,9 +32,15 @@ class Parameter<P extends IParameter> extends Component<IParameterProps<P> & IMi
     private renderParameter<K extends keyof P>
     (key: K, option: IParameterOptionItem<P[K]>, value: IParamValue<P[K]>): ReactNode {
 
-        const language = this.props.setting?.language ?? "EN_US";
         const indexKey = `${this.props.key}-${key}`;
+
+        // 条件检测
+        if (option.condition && this.props.value[option.condition.key] !==  option.condition.value) {
+            return <Fragment key={indexKey}/>;
+        }
+
         const type = option.type;
+        const language = this.props.setting?.language ?? "EN_US";        
         let keyI18n: string, keyI18nOption: Record<string, string> | undefined;
 
         // Custom I18N

source/Model/Parameter.ts

@@ -115,6 +115,11 @@ interface IParameterOptionItem<T extends IParamType = IParamType> {
      */
     colorNormal?: boolean;
 
+    /**
+     * 显示条件
+     */
+    condition?: {key: string, value: any};
+
     /**
      * 全部选项
      */