Solves issue #4214

processing · Jan 12, 2024 · ba0f02e · ba0f02e
1 parent bf0a48d
commit ba0f02e
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Showing 2 changed files with 18 additions and 4 deletions.
diff --git a/src/webgl/p5.RendererGL.js b/src/webgl/p5.RendererGL.js
@@ -23,6 +23,15 @@ const defineStrokeJoinEnum = function (key, val) {
   STROKE_JOIN_ENUM[constants[key]] = val;
 };
 
+p5.prototype.linePerspective = function (enable) {
+  if (enable) {
+    this.drawingContext.linePerspective = true;
+  } else {
+    this.drawingContext.linePerspective = false;
+  }
+};
+
+
 // Define constants in line shaders for each type of cap/join, and also record
 // the values in JS objects
 defineStrokeCapEnum('ROUND', 0);

diff --git a/src/webgl/p5.Shader.js b/src/webgl/p5.Shader.js
@@ -325,10 +325,15 @@ p5.Shader = class {
 
     if (this.isStrokeShader()) {
       if (this._renderer._curCamera.cameraType === 'default') {
-        // strokes scale up as they approach camera, default
-        this.setUniform('uPerspective', 1);
-      } else {
-        // strokes have uniform scale regardless of distance from camera
+        // Check if line perspective is enabled
+        if (this._renderer.drawingContext.linePerspective) {
+          // strokes scale up as they approach camera, default
+          this.setUniform('uPerspective', 1);
+        } else {
+          this.setUniform('uPerspective', 0);
+        }
+      }else{
+      // Strokes have a uniform scale regardless of the distance from the camera
         this.setUniform('uPerspective', 0);
       }
     }