update example application with camera changes

examples/main.cpp

@@ -202,6 +202,24 @@ testColoredVertices(RenderState* rs)
 	return true;
 }
 
+bool
+loadCamera(RenderState* rs)
+{
+	Camera* cam = rs->camera;
+	glm::vec3 cam_pos = { 0, 15, 40 };
+	glm::vec3 look_pos = { 0, 0, 0 };
+	glm::vec3 up = { 0, 1, 0 };
+	cameraInitPerspective(cam, cam_pos, look_pos, up);
+	GLBuffer* xforms_ubo = getUBOByName(rs->gl_ctx, "matrices");
+
+	if (!xforms_ubo)
+		return false;
+
+	updateGLBuffer(xforms_ubo, &cam->xforms);
+
+	return true;
+}
+
 bool
 loadScene(RenderState* rs)
 {
@@ -214,19 +232,16 @@ loadScene(RenderState* rs)
 		LOGF(Error, "Error loading colored vertices\n");
 		return false;
 	}
-#if 1
-	if (!loadSpaceShip(rs))
+
+	if (!loadSpaceShip(rs)) {
+		LOGF(Error, "Error loading ship modeln");
 		return false;
-#endif
+	}
 
-	// NOTE: initilize the 'camera'
-	glm::vec3 cam_pos = { 0, 15, 40 };
-	glm::vec3 look_pos = { 0, 0, 0 };
-	glm::vec3 up = { 0, 1, 0 };
-	rs->xforms->view_xform = glm::lookAt(cam_pos, look_pos, up);
-	GLBuffer* xforms_ubo = getUBOByName(rs->gl_ctx, "matrices");
-	assert(xforms_ubo);
-	updateGLBuffer(xforms_ubo, rs->xforms);
+	if (!loadCamera(rs)) {
+		LOGF(Error, "Error loading camera\n");
+		return false;
+	}
 
 	return loadLights(rs);
 }
@@ -284,7 +299,7 @@ render_cb_pre(RenderState* rs)
 	}
 
 	orbitPositionZ0(&cam_pos, 0.5 * M_PI / 180);
-	rs->xforms->view_xform =
+	rs->camera->xforms.view =
 		glm::lookAt(glm::vec3(cam_pos), glm::vec3(0, 0, 0), glm::vec3(0, 1, 0));
 
 	static GLBuffer* xform_ubo = nullptr;
@@ -294,7 +309,7 @@ render_cb_pre(RenderState* rs)
 		assert(xform_ubo != nullptr);
 	}
 
-	updateGLBuffer(xform_ubo, rs->xforms);
+	updateGLBuffer(xform_ubo, &rs->camera->xforms);
 
 	// NOTE: rotate cubes
 	RenderGroup* rg2 = getRenderGroupByName(rs, "textured_cubes");