Fix: show rate expression instead of rate name

packages/client/hmi-client/src/components/model/petrinet/tera-equation-container.vue

@@ -55,6 +55,7 @@ const emit = defineEmits([
 
 const equationType = computed(() => props.equationType ?? 'equation');
 const isEditingStyle = computed(() => (props.isEditing ? 'is-editing' : ''));
+const mathContainerStyle = computed(() => (props.isEditable ? '-1rem' : '0rem'));
 </script>
 
 <style scoped>
@@ -97,6 +98,6 @@ main.is-editing {
 	border: 4px solid transparent;
 	border-radius: var(--border-radius);
 	position: relative;
-	top: -1rem;
+	top: v-bind('mathContainerStyle');
 }
 </style>

packages/client/hmi-client/src/components/model/petrinet/tera-model-equation.vue

@@ -1,7 +1,7 @@
 <template>
 	<tera-equation-container
 		:is-editing="isEditing"
-		:is-editable="isEditable"
+		:is-editable="isEditable && canEditEquations"
 		@cancel-edit="cancelEdit"
 		@add-equation="addEquation"
 		@start-editing="isEditing = true"
@@ -47,6 +47,7 @@ const equationsRef = ref<any[]>([]);
 const equations = ref<string[]>([]);
 const orginalEquations = ref<string[]>([]);
 const isEditing = ref(false);
+const canEditEquations = ref(true);
 
 const setNewEquation = (index: number, latexEq: string) => {
 	equations.value[index] = latexEq;
@@ -80,13 +81,24 @@ const updateModelFromEquations = async () => {
 	}
 };
 
+function modelIsEmpty(targetModel: Model): boolean {
+	// model does not have any states or transitions
+	if (targetModel.model?.states?.length === 0 && targetModel.model?.transitions?.length === 0) {
+		return true;
+	}
+
+	return false;
+}
+
 watch(
 	() => props.model,
 	async () => {
 		const latexFormula = await petriToLatex(convertAMRToACSet(props.model));
 		if (latexFormula) {
 			updateLatexFormula(cleanLatexEquations(latexFormula.split(' \\\\')));
 		}
+
+		canEditEquations.value = (props.model && modelIsEmpty(props.model)) as boolean;
 	},
 	{ deep: true, immediate: true }
 );

packages/client/hmi-client/src/model-representation/petrinet/petrinet-service.ts

@@ -64,6 +64,14 @@ export const convertAMRToACSet = (amr: Model) => {
 		});
 	});
 
+	// post processing to use expressions rather than ids
+	result.T = result.T.map((transition) => {
+		const foundRate = amr.semantics?.ode.rates.find((rate) => rate.target === transition.tname);
+
+		// default to the id if there is a case where there is no expression
+		return { tname: foundRate ? `(${foundRate!.expression})` : transition.tname };
+	});
+
 	return result;
 };
 

packages/client/hmi-client/src/utils/math.ts

@@ -229,6 +229,8 @@ export const cleanLatexEquations = (equations: Array<string>): Array<string> =>
 				.replaceAll('\\left', '')
 				.replaceAll('{align}', '')
 				.replaceAll('=&', '=')
+				// scientific variables such as \beta and \gamma are not parsed when there is a '*' (with no space) placed after them - other math operaters do work though
+				.replaceAll('*', ' *')
 				.trim()
 		);