From 6fff6d556069a2a80f59415ceb320dacafa36d27 Mon Sep 17 00:00:00 2001
From: WanjieSun <wanjie.sun@qq.com>
Date: Sat, 4 Jun 2016 23:24:18 +0800
Subject: [PATCH] fixed

---
 CMakeLists.txt  | 6 ++++--
 core/sampling.h | 5 ++++-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e87b9b6..7499612 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,12 +21,14 @@ set(CMAKE_AUTORCC ON)
 set(RESOURCES_FILES qdarkstyle/style.qrc resources/images.qrc)
 
 #VTK
-set(VTK_DIR /Volumes/Free/SDK/CTK/build/VTK-build)
+#set(VTK_DIR /Volumes/Free/SDK/CTK/build/VTK-build)
+set(VTK_DIR /Users/sunwj/Desktop/SDK/CTK/build/VTK-build)
 find_package(VTK REQUIRED)
 include(${VTK_USE_FILE})
 
 #CTK
-set(CTK_DIR /Volumes/Free/SDK/CTK/build/)
+#set(CTK_DIR /Volumes/Free/SDK/CTK/build/)
+set(CTK_DIR /Users/sunwj/Desktop/SDK/CTK/build)
 find_package(CTK REQUIRED)
 include(${CTK_USE_FILE})
 set(CTK_LIBRARIES CTKCore CTKWidgets CTKVisualizationVTKCore CTKVisualizationVTKWidgets)
diff --git a/core/sampling.h b/core/sampling.h
index 32e132c..7911b01 100644
--- a/core/sampling.h
+++ b/core/sampling.h
@@ -25,7 +25,10 @@ __inline__ __device__ glm::vec2 uniform_sample_unit_disk(curandState& rng)
 // return x and y in cartesian coordinate
 __inline__ __device__ glm::vec2 uniform_sample_disk(curandState& rng, float r)
 {
-    return glm::vec2(cosf(2.f * M_PI * curand_uniform(&rng)), sinf(sqrtf(curand_uniform(&rng)))) * r;
+    r *= sqrtf(curand_uniform(&rng));
+    float theta = 2.f * M_PI * curand_uniform(&rng);
+
+    return glm::vec2(cosf(theta), sinf(theta)) * r;
 }
 
 // return direction in cartesian space