flip the objects to face the camera

src/assets/positionable_object.rs

@@ -1,6 +1,6 @@
 use crate::assets::renderable_object::RenderableObject;
 use gl::types::*;
-use nalgebra::{Vector4, Rotation3, Translation3, Matrix4, Vector3};
+use nalgebra::{Vector4, Rotation3, Translation3, Matrix4, Vector3, RealField};
 use std::ffi::CString;
 use std::os::raw::c_char;
 use crate::opengl::wrapper::uniform::Uniform;
@@ -51,6 +51,21 @@ impl PositionableObject {
     self.rotation.z = z;
   }
 
+  /// Add pi to x rotation
+  pub fn flip_x(&mut self) {
+    self.rotation.x += f32::pi();
+  }
+
+  /// Add pi to y rotation
+  pub fn flip_y(&mut self) {
+    self.rotation.y += f32::pi();
+  }
+
+  /// Add pi to z rotation
+  pub fn flip_z(&mut self) {
+    self.rotation.z += f32::pi();
+  }
+
   pub fn scale_nonuniform(&mut self, x: f32, y: f32, z: f32) {
     self.scale.x = x;
     self.scale.y = y;

src/assets/renderable_object.rs

@@ -142,8 +142,11 @@ impl RenderableObject {
     let width = rgba_image.width();
     let height = rgba_image.height();
 
-    let flat_samples = rgba_image.into_flat_samples();
-    let pixel_data = flat_samples.samples.as_ptr() as *const c_void;
+    //let flat_samples = rgba_image.into_flat_samples();
+    //let pixel_data = flat_samples.samples.as_ptr() as *const c_void;
+
+    let img_data = rgba_image.into_raw();
+    let pixel_data = img_data.as_ptr() as *const c_void;
 
     self.texture.bind_as_texture_2d();
 

src/point_cloud/point_cloud_renderer.rs

@@ -279,8 +279,9 @@ impl PointCloudRenderer {
 
       let mut positionable_object = PositionableObject::new(renderable_object);
 
-      positionable_object.translate(0.0, 0.0, 15.0);
-      positionable_object.rotate(10.0, 8.0, 50.0);
+      positionable_object.translate(-5.0, 0.0, 15.0);
+      positionable_object.flip_y(); // flipping y and z rights the model.
+      positionable_object.flip_z();
       positionable_object.scale_nonuniform(2.0, 1.0, 0.5);
 
       self.renderable_objects.push(positionable_object);
@@ -330,7 +331,9 @@ impl PointCloudRenderer {
 
       let mut positionable_object = PositionableObject::new(renderable_object);
 
-      positionable_object.translate(6.0, 6.0, 20.0);
+      positionable_object.translate(5.0, 2.0, 20.0);
+      positionable_object.flip_y(); // flipping y and z rights the model.
+      positionable_object.flip_z();
       positionable_object.scale(0.05);
 
       self.renderable_objects.push(positionable_object);