Inplemented ImGui

Parade.vcxproj

@@ -19,16 +19,38 @@
     </ProjectConfiguration>
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="imgui\backends\imgui_impl_glfw.cpp" />
+    <ClCompile Include="imgui\backends\imgui_impl_opengl3.cpp" />
+    <ClCompile Include="imgui\imgui.cpp" />
+    <ClCompile Include="imgui\imgui_demo.cpp" />
+    <ClCompile Include="imgui\imgui_draw.cpp" />
+    <ClCompile Include="imgui\imgui_tables.cpp" />
+    <ClCompile Include="imgui\imgui_widgets.cpp" />
     <ClCompile Include="src\Application.cpp" />
     <ClCompile Include="src\Camera.cpp" />
+    <ClCompile Include="src\imgui_demo.cpp" />
   </ItemGroup>
   <ItemGroup>
+    <None Include="imgui\.editorconfig" />
+    <None Include="imgui\.gitattributes" />
+    <None Include="imgui\.gitignore" />
     <None Include="shaders\parade_fs.glsl" />
     <None Include="shaders\parade_vs.glsl" />
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="imgui\backends\imgui_impl_glfw.h" />
+    <ClInclude Include="imgui\backends\imgui_impl_opengl3.h" />
+    <ClInclude Include="imgui\imconfig.h" />
+    <ClInclude Include="imgui\imgui.h" />
+    <ClInclude Include="imgui\imgui_internal.h" />
+    <ClInclude Include="imgui\imstb_rectpack.h" />
+    <ClInclude Include="imgui\imstb_textedit.h" />
+    <ClInclude Include="imgui\imstb_truetype.h" />
     <ClInclude Include="include\Camera.h" />
   </ItemGroup>
+  <ItemGroup>
+    <Text Include="imgui\LICENSE.txt" />
+  </ItemGroup>
   <PropertyGroup Label="Globals">
     <VCProjectVersion>16.0</VCProjectVersion>
     <Keyword>Win32Proj</Keyword>
@@ -99,15 +121,15 @@
     <LinkIncremental>true</LinkIncremental>
     <OutDir>$(SolutionDir)bin\$(Platform)$(Configuration)</OutDir>
     <IntDir>$(SolutionDir)bin\intermediates\$(Platform)$(Configuration)</IntDir>
-    <IncludePath>$(SolutionDir)\imgui-master;$(SolutionDir)\include;$(SolutionDir)\imgui_master;$(IncludePath)</IncludePath>
+    <IncludePath>C:\Users\Jack\parade\imgui;C:\Users\Jack\parade\include;$(IncludePath)</IncludePath>
     <LibraryPath>$(SolutionDir)\lib;$(VC_LibraryPath_x64);$(WindowsSDK_LibraryPath_x64);$(SolutionDir)lib</LibraryPath>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <LinkIncremental>false</LinkIncremental>
     <OutDir>$(SolutionDir)bin\$(Platform)$(Configuration)\</OutDir>
     <IntDir>$(SolutionDir)bin\intermediates\$(Platform)$(Configuration)\</IntDir>
-    <LibraryPath>$(SolutionDir)\lib;$(VC_LibraryPath_x64);$(WindowsSDK_LibraryPath_x64)</LibraryPath>
-    <IncludePath>$(SolutionDir)\imgui-master;$(SolutionDir)\include;$(SolutionDir)\imgui_master;$(IncludePath)</IncludePath>
+    <LibraryPath>$(SolutionDir)\lib\;$(VC_LibraryPath_x64);$(WindowsSDK_LibraryPath_x64)</LibraryPath>
+    <IncludePath>$(CoreLibraryDependencies);$(SolutionDir)include\;$(SolutionDir)imgui\;$(IncludePath)</IncludePath>
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>

Parade.vcxproj.filters

@@ -16,6 +16,9 @@
     <Filter Include="Shaders">
       <UniqueIdentifier>{de7b03ae-538e-4924-978f-dbbf7fd055af}</UniqueIdentifier>
     </Filter>
+    <Filter Include="imgui">
+      <UniqueIdentifier>{82ea4ca8-7738-4f20-8641-5716a9a1dc9d}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="src\Application.cpp">
@@ -24,6 +27,30 @@
     <ClCompile Include="src\Camera.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="imgui\imgui.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="imgui\imgui_demo.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="imgui\imgui_draw.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="imgui\imgui_tables.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="imgui\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="src\imgui_demo.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="imgui\backends\imgui_impl_glfw.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="imgui\backends\imgui_impl_opengl3.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="shaders\parade_vs.glsl">
@@ -32,10 +59,48 @@
     <None Include="shaders\parade_fs.glsl">
       <Filter>Shaders</Filter>
     </None>
+    <None Include="imgui\.editorconfig">
+      <Filter>imgui</Filter>
+    </None>
+    <None Include="imgui\.gitattributes">
+      <Filter>imgui</Filter>
+    </None>
+    <None Include="imgui\.gitignore">
+      <Filter>imgui</Filter>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="include\Camera.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="imgui\imconfig.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="imgui\imgui.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="imgui\imgui_internal.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="imgui\imstb_rectpack.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="imgui\imstb_textedit.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="imgui\imstb_truetype.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="imgui\backends\imgui_impl_glfw.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="imgui\backends\imgui_impl_opengl3.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <Text Include="imgui\LICENSE.txt">
+      <Filter>imgui</Filter>
+    </Text>
   </ItemGroup>
 </Project>

imgui

@@ -0,0 +1 @@
+Subproject commit 208b8242bc8dfc86c2cb0a22156eef4cb5977476

imgui.ini

@@ -0,0 +1,10 @@
+[Window][Debug##Default]
+Pos=60,60
+Size=400,400
+Collapsed=0
+
+[Window][Debug Window]
+Pos=1,7
+Size=370,123
+Collapsed=0
+

shaders/parade_fs.glsl

@@ -14,6 +14,8 @@ uniform vec3 ka;
 uniform vec3 kd;
 uniform vec3 ks;
 
+uniform float smoothing;
+
 in vec3 v_pos;
 
 out vec4 FragColor;
@@ -109,6 +111,7 @@ void main(void)
 	int max_steps = 1000;
 	vec3 light_pos = vec3(0.0, 1.0, 0.0);
 	int spec_exponent = 40;
+	float k = smoothing;
 
 	initTorus();
 	initSphere();
@@ -125,7 +128,7 @@ void main(void)
 		steps++;
 		float distTorus = torusSDF(ray_pos.xyz, torus.R, torus.r);
 		float distSphere = sphereSDF(ray_pos.xyz, sphere.center, sphere.r);
-		float minDist = smoothMinSDF(distTorus, distSphere, 1.0);
+		float minDist = smoothMinSDF(distTorus, distSphere, k);
 		//bool isTorus = distTorus < distSphere;
 		//float minDist = min(distTorus, distSphere);
 
@@ -138,7 +141,7 @@ void main(void)
 
 			vec4 ambient = vec4(la, 1.0) * ambient_color;
 
-			normals = estimateSmoothNormals(ray_pos.xyz, 1.0);
+			normals = estimateSmoothNormals(ray_pos.xyz, k);
 
 			//if (isTorus)
 			//	normals = estimateNormalsTorus(ray_pos.xyz);

src/Application.cpp

@@ -1,3 +1,7 @@
+#include "imgui.h"
+#include "backends/imgui_impl_glfw.h"
+#include "backends/imgui_impl_opengl3.h"
+
 #include <iostream>
 #include <fstream>
 #include <vector>
@@ -53,6 +57,8 @@ namespace scene
     glm::vec3 kd = { 193.0 / 255.0, 41.0 / 255.0, 46.0 / 255.0 };   // Object diffuse color
     glm::vec3 ks = { 1.0f, 1.0f, 1.0f };    // Object specular color
     int specular_exponent = 10.f;
+
+    float smoothing = 0.001f;
 }
 
 namespace mouse
@@ -147,6 +153,36 @@ void InitCanvas()
 
 }
 
+//Draw the ImGui user interface
+void draw_gui(GLFWwindow* window)
+{
+    //Begin ImGui Frame
+    ImGui_ImplOpenGL3_NewFrame();
+    ImGui_ImplGlfw_NewFrame();
+    ImGui::NewFrame();
+
+    //Draw Gui
+    ImGui::Begin("Debug Window");
+    if (ImGui::Button("Quit"))
+    {
+        glfwSetWindowShouldClose(window, GLFW_TRUE);
+    }
+
+    ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+    ImGui::SliderFloat("Smoothing", &scene::smoothing, 0.001f, 1.0f);
+    ImGui::End();
+    
+    static bool show_test = false;
+    if (show_test)
+    {
+        ImGui::ShowDemoWindow(&show_test);
+    }
+    
+    //End ImGui Frame
+    ImGui::Render();
+    ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+}
+
 void idle()
 {
     glEnable(GL_DEPTH_TEST);
@@ -193,6 +229,11 @@ void display(GLFWwindow* window)
     {
         glUniform1i(window_height_loc, window::size[1]);
     }
+    int smoothing_loc = glGetUniformLocation(scene::shader, "smoothing");
+    if (smoothing_loc != -1)
+    {
+        glUniform1f(smoothing_loc, scene::smoothing);
+    }
 
     glUniform3fv(glGetUniformLocation(scene::shader, "light_pos"), 1, glm::value_ptr(scene::Lp));
     glUniform3fv(glGetUniformLocation(scene::shader, "la"), 1, glm::value_ptr(scene::La));
@@ -208,6 +249,8 @@ void display(GLFWwindow* window)
     glBindVertexArray(VAO);
     glDrawArrays(GL_TRIANGLE_STRIP, 0, sizeof(vertices) / 3);
 
+    draw_gui(window);
+
     glfwSwapBuffers(window);
 }
 
@@ -245,8 +288,8 @@ void keyboard_callback(GLFWwindow* window, int key, int scancode, int action, in
 
 void orbit_camera()
 {
-    scene::yaw += mouse::xoffset;
-    scene::pitch += mouse::yoffset;
+    scene::yaw += (float)mouse::xoffset;
+    scene::pitch += (float)mouse::yoffset;
 
     scene::camera.orbit(scene::yaw, scene::pitch);
 }
@@ -346,6 +389,11 @@ int main()
 
     init();
 
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGui_ImplGlfw_InitForOpenGL(window, true);
+    ImGui_ImplOpenGL3_Init("#version 150");
+
     while (!glfwWindowShouldClose(window))
     {
         idle();
@@ -354,5 +402,9 @@ int main()
         glfwPollEvents();
     }
 
+    ImGui_ImplOpenGL3_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+
     return 0;
 }