Initial work to support curv (#578)

* Initial work to support curv

* Correct the initial code file location

* Preview and stl mvp working

* Prepare changes for review and preview build

* Run curv inside of /tmp

When exporting an stl it writes temporary files which is not allowed
when deployed to aws unless it's in temp.

* Lock in specific curv commit for reproducible builds

see: https://discord.com/channels/412182089279209474/886321278821216277/912507472441401385

* Add curv to backend schema

* Frontend changes to accommodate curv deploy

* Use vcount instead of vsize, as it's independant of geometry size,

This is good for CadHub usecase where we don't know anything about the
user's project

* Final tweaks for deploy

virtual screen size does matter,and curv is a little more memory hungry
than the other functions

* Format project

Co-authored-by: lf94 <inbox@leefallat.ca>
Co-authored-by: Kurt Hutten <k.hutten@protonmail.ch>

app/web/src/helpers/cadPackages/common.ts

@@ -5,7 +5,7 @@ import type { Camera } from 'src/helpers/hooks/useIdeState'
 
 export const lambdaBaseURL =
   process.env.CAD_LAMBDA_BASE_URL ||
-  'https://oxt2p7ddgj.execute-api.us-east-1.amazonaws.com/prod'
+  'https://2inlbple1b.execute-api.us-east-1.amazonaws.com/prod2'
 
 export const stlToGeometry = (url) =>
   new Promise((resolve, reject) => {

app/web/src/helpers/cadPackages/curv/curvController.ts

@@ -0,0 +1,103 @@
+import {
+  lambdaBaseURL,
+  stlToGeometry,
+  createHealthyResponse,
+  createUnhealthyResponse,
+  timeoutErrorMessage,
+  RenderArgs,
+  splitGziped,
+} from '../common'
+
+export const render = async ({ code, settings }: RenderArgs) => {
+  const pixelRatio = window.devicePixelRatio || 1
+  const size = {
+    x: Math.round(settings.viewerSize?.width * pixelRatio),
+    y: Math.round(settings.viewerSize?.height * pixelRatio),
+  }
+  const body = JSON.stringify({
+    settings: {
+      size,
+    },
+    file: code,
+  })
+  try {
+    const response = await fetch(lambdaBaseURL + '/curv/preview', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body,
+    })
+    if (response.status === 400) {
+      const { error } = await response.json()
+      const cleanedErrorMessage = cleanError(error)
+      return createUnhealthyResponse(new Date(), cleanedErrorMessage)
+    }
+    if (response.status === 502) {
+      return createUnhealthyResponse(new Date(), timeoutErrorMessage)
+    }
+    const blob = await response.blob()
+    const text = await new Response(blob).text()
+    const { consoleMessage, type } = splitGziped(text)
+    return createHealthyResponse({
+      type: type !== 'stl' ? 'png' : 'geometry',
+      data:
+        type !== 'stl'
+          ? blob
+          : await stlToGeometry(window.URL.createObjectURL(blob)),
+      consoleMessage,
+      date: new Date(),
+    })
+  } catch (e) {
+    return createUnhealthyResponse(new Date())
+  }
+}
+
+export const stl = async ({ code /*settings*/ }: RenderArgs) => {
+  const body = JSON.stringify({
+    settings: {},
+    file: code,
+  })
+  try {
+    const response = await fetch(lambdaBaseURL + '/curv/stl', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body,
+    })
+    if (response.status === 400) {
+      const { error } = await response.json()
+      const cleanedErrorMessage = cleanError(error)
+      return createUnhealthyResponse(new Date(), cleanedErrorMessage)
+    }
+    if (response.status === 502) {
+      return createUnhealthyResponse(new Date(), timeoutErrorMessage)
+    }
+    const blob = await response.blob()
+    const text = await new Response(blob).text()
+    const { consoleMessage, type } = splitGziped(text)
+    return createHealthyResponse({
+      type: type !== 'stl' ? 'png' : 'geometry',
+      data:
+        type !== 'stl'
+          ? blob
+          : await stlToGeometry(window.URL.createObjectURL(blob)),
+      consoleMessage,
+      date: new Date(),
+    })
+  } catch (e) {
+    return createUnhealthyResponse(new Date())
+  }
+}
+
+const curv = {
+  render,
+  stl,
+}
+
+export default curv
+
+function cleanError(error) {
+  return error.replace(/["|']\/tmp\/.+\/main.curv["|']/g, "'main.curv'")
+}

app/web/src/helpers/cadPackages/curv/initialCode.curv

@@ -0,0 +1,10 @@
+let
+    N = 5;
+    C = red;
+    Twists = 6;
+in
+box [1,1,N]
+>> colour C
+>> twist (Twists*90*deg/N)
+>> rotate {angle: 90*deg, axis: Y_axis}
+>> bend{}

app/web/src/helpers/cadPackages/curv/userGuide.md

@@ -0,0 +1,15 @@
+---
+title: Curv
+Written with: [Domain-Specific Language](https://martinfowler.com/dsl.html)
+Kernal type: Signed distance functions
+Maintained by: [Doug Moen and contributors](https://github.com/curv/curv/graphs/contributors)
+Documentation: [curv3d.org](https://curv3d.org)
+---
+
+Curv is a programming language for creating art using mathematics. It's a 2D and 3D geometric modelling tool that supports full colour, animation and 3D printing.
+
+### [Examples](https://github.com/curv3d/curv/tree/master/examples)
+
+- [Flog spiral](https://619b5e6c6689420008eedfe5--cadhubxyz.netlify.app/draft/curv#fetch_text_v1=https%3A%2F%2Fraw.githubusercontent.com%2Fcurv3d%2Fcurv%2Fmaster%2Fexamples%2Flog_spiral.curv)
+- [Shreks donut](https://619b5e6c6689420008eedfe5--cadhubxyz.netlify.app/draft/curv#fetch_text_v1=https%3A%2F%2Fraw.githubusercontent.com%2Fcurv3d%2Fcurv%2Fmaster%2Fexamples%2Fshreks_donut.curv)
+- [Wood grain](https://619b5e6c6689420008eedfe5--cadhubxyz.netlify.app/draft/curv#fetch_text_v1=https%3A%2F%2Fraw.githubusercontent.com%2Fcurv3d%2Fcurv%2Fmaster%2Fexamples%2Ffinial.curv)

app/web/src/helpers/cadPackages/index.ts

@@ -13,16 +13,22 @@ import jscad from './jsCad/jsCadController'
 import jsCadGuide from 'src/helpers/cadPackages/jsCad/userGuide.md'
 import jsCadInitialCode from 'src/helpers/cadPackages/jsCad/initialCode.jscad.js'
 
+import curv from './curv/curvController'
+import curvGuide from 'src/helpers/cadPackages/curv/userGuide.md'
+import curvInitialCode from 'src/helpers/cadPackages/curv/initialCode.curv'
+
 export const cadPackages: { [key in CadPackageType]: DefaultKernelExport } = {
   openscad,
   cadquery,
   jscad,
+  curv,
 }
 
 export const initGuideMap: { [key in CadPackageType]: string } = {
   openscad: openScadGuide,
   cadquery: cadQueryGuide,
   jscad: jsCadGuide,
+  curv: curvGuide,
   INIT: '',
 }
 
@@ -30,5 +36,6 @@ export const initCodeMap: { [key in CadPackageType]: string } = {
   openscad: openScadInitialCode,
   cadquery: cadQueryInitialCode,
   jscad: jsCadInitialCode,
+  curv: curvInitialCode,
   INIT: '',
 }