Animated Sonic

src/data/sonic_screwdriver.obj

@@ -11,30 +11,30 @@ usemtl floor
 s off
 f 2//1 1//1 3//1 4//1
 o Cube_Cube.008
-v 8.485309 -0.011262 -0.420843
-v 8.485309 -0.011262 -0.662478
-v 9.620116 -0.011262 -0.662478
-v 9.620116 -0.011262 -0.420843
-v 8.485309 1.123545 -0.420843
-v 8.485309 1.123545 -0.662478
-v 9.620116 1.123545 -0.662478
-v 9.620116 1.123545 -0.420843
-v 9.698260 -0.316609 -0.662478
-v 9.698260 -0.316609 -0.420843
-v 9.698260 1.428891 -0.662478
-v 9.698260 1.428891 -0.420843
-v 8.448704 -0.316609 -0.420843
-v 8.448704 -0.316609 -0.662478
-v 8.448704 1.428891 -0.420843
-v 8.448704 1.428891 -0.662478
-v 10.557929 0.461606 -0.662478
-v 10.557929 0.461606 -0.420843
-v 10.557929 0.650676 -0.662478
-v 10.557929 0.650676 -0.420843
-v 7.589035 0.461606 -0.420843
-v 7.589035 0.461606 -0.662478
-v 7.589035 0.650676 -0.420843
-v 7.589035 0.650676 -0.662478
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
+v 0.0000 0.0000 0.0000
 vn -0.0000 0.0000 1.0000
 vn 0.0000 0.0000 -1.0000
 vn -0.9688 -0.2479 0.0000

src/libs/OBJLoader.cpp

@@ -75,6 +75,7 @@ bool Loader::loadFile(const std::string& filename)
   defaultMat.Kd[0] = 1.0; defaultMat.Kd[1] = 1.0; defaultMat.Kd[2] = 1.0; defaultMat.Kd[3] = 1.0;
   defaultMat.Ks[0] = 1.0; defaultMat.Ks[1] = 1.0; defaultMat.Ks[2] = 1.0; defaultMat.Ks[3] = 1.0;
   defaultMat.Kn = 128;
+  defaultMat.d = 1.0;
   defaultMat.name = "(Default)";
   _materials.push_back(defaultMat);
 
@@ -319,6 +320,7 @@ void Loader::loadMtlFile(const std::string& filename)
       newMtl.Kd[0] = 0.0; newMtl.Kd[1] = 0.0; newMtl.Kd[2] = 0.0; newMtl.Kd[3] = 0.0;
       newMtl.Ks[0] = 0.0; newMtl.Ks[1] = 0.0; newMtl.Ks[2] = 0.0; newMtl.Ks[3] = 0.0;
       newMtl.Kn = 0;
+      newMtl.d = 1.0;
 
       // Get its name
       std::string dummy;
@@ -374,6 +376,16 @@ void Loader::loadMtlFile(const std::string& filename)
         mat.Ke[3] = 1.0f;
       }
     }
+    else if (line[0] == 'd')
+    {
+        // Alpha
+        std::stringstream ss(line);
+        std::string dummy;
+        float alpha;
+        ss >> dummy >> alpha;
+
+        _materials[currentMaterial].d = alpha;
+    }
   }
 
   // Close file

src/libs/OBJLoader.h

@@ -14,6 +14,7 @@ namespace OBJLoader
     float Kd[4];  // Diffuse color
     float Ks[4];  // Specular color
     float Kn;     // Specular exponent
+    float d;      // Alpha component
 
     std::string name; // Material's name
   };

src/shaders/objShader.frag

@@ -8,6 +8,7 @@ uniform bool isPhong;
 uniform vec3 pointLight[3];
 uniform vec4 pointLightCol[3];
 uniform mat3 normalMatrix;
+uniform float alpha;
 
 in vec3 fNormal;
 in vec3 fPosition;
@@ -32,7 +33,7 @@ vec4 calcDirLight(vec4 tex, vec3 fPos, vec3 fNorm, vec3 lightDir) {
 
         vec3 totalLight = diffV + specV;
         //return vec4(Kd + Ks, 1)
-        return vec4(totalLight, 1);
+        return vec4(totalLight, alpha);
 }
 
 vec4 calcPointLight(vec4 tex, vec3 fPos, vec3 fNorm, int i) {
@@ -56,13 +57,13 @@ vec4 calcPointLight(vec4 tex, vec3 fPos, vec3 fNorm, int i) {
 
     // Compute ambient component
         vec3 totalLight = attenuation * (diffV + specV);
-        return vec4(totalLight, 1);
+        return vec4(totalLight, alpha);
 }
 
 void
 main()
 {
-    vec4 texColor;
+    vec4 texColor = vec4(1, 1, 1, alpha);
 
     // Get lighting vectors
     vec3 LightDirection = normalize(lDirection);
@@ -70,6 +71,10 @@ main()
     vec3 nviewDirection = normalize(fPosition);
 
     fColor = 0.3 * calcDirLight(texColor, fPosition, fNormal, lDirection)
-            + 0.6 * calcDirLight(texColor, fPosition, fNormal, vec3(0.0)-fPosition);
-    fColor.a = 1.0;
+            + 0.4 * calcDirLight(texColor, fPosition, fNormal, vec3(-0.2)-fPosition)
+            + 0.1 * calcPointLight(texColor, fPosition, fNormal, 0)/4
+            + 0.1 * calcPointLight(texColor, fPosition, fNormal, 1)/4
+            + 0.1 * calcPointLight(texColor, fPosition, fNormal, 2)/4
+            + 0.14 * vec4(Kd, 1);
+    fColor.a = alpha;
 }

src/shaders/objShader.vert

@@ -4,6 +4,7 @@ uniform mat4 projMatrix;
 uniform mat3 normalMatrix;
 uniform bool isPhong;
 uniform vec3 lDirection;
+uniform float alpha;
 
 uniform vec3 pointLight[3];
 
@@ -30,7 +31,7 @@ vec4 calcDirLight(vec4 eye, vec3 fPos, vec3 fNorm) {
     // Compute ambient component
     vec3 amb = vec3(0.1);
 
-        return vec4(amb + diff + spec, 1);
+        return vec4(amb + diff + spec, alpha);
 }
 
 vec4 calcPointLight(vec4 eye, vec3 fPos, vec3 fNorm, int i) {
@@ -53,7 +54,7 @@ vec4 calcPointLight(vec4 eye, vec3 fPos, vec3 fNorm, int i) {
     // Compute ambient component
     vec3 amb = attenuation * vec3(0.1);
 
-    return 0.3 * vec4(amb + diff + spec, 1);
+    return 0.3 * vec4(amb + diff + spec, alpha);
 }
 
 void

src/viewer/simpleViewer.cpp

@@ -63,6 +63,14 @@ namespace
 	SceneGroup* selection;
     PickedGeom selectedObj;
 
+    struct ToolAnimation {
+        double startFrame;
+        int length;
+        bool active;
+    };
+
+    ToolAnimation swing;
+
 	int currentPoint = 0; // VERY lazy way of tracking light balls
 }
 
@@ -158,6 +166,7 @@ void Viewer::loadToolObj() {
         meshGL.diffuse = QVector3D(Kd[0], Kd[1], Kd[2]);
         meshGL.specular = QVector3D(Ks[0], Ks[1], Ks[2]);
         meshGL.specularExponent = materials[meshes[i].materialID].Kn;
+        meshGL.alpha = materials[meshes[i].materialID].d;
 
         // Create its VAO and VBO object
         glGenVertexArrays(1, &meshGL.vao);
@@ -305,6 +314,7 @@ void Viewer::mousePressEvent(QMouseEvent* e) {
 		selectedObj.shape = selectedGeom.shape;
 		selectedObj.shape->getParent()->addChild(selection);
         cubeSelected(true);
+        startSwingAnimation();
 	}
 
 	if(!selectedGeom.position.isIdentity() && e->modifiers().testFlag(Qt::ShiftModifier))
@@ -314,7 +324,8 @@ void Viewer::mousePressEvent(QMouseEvent* e) {
 		SceneGroup* container = new SceneGroup;
 		container->transform = selectedGeom.position;
 		container->addChild(c);
-		root.addChild(container);
+        root.addChild(container);
+        startSwingAnimation();
 	}
 	else{
 		QGLViewer::mousePressEvent(e);
@@ -354,6 +365,7 @@ void Viewer::keyPressEvent(QKeyEvent* e) {
 		selectedTexture = e->key() - 0x31;
 		if(selectedObj.shape != nullptr ){
 			selectedObj.shape->setType(selectedTexture);
+            startSwingAnimation();
 		}
 		break;
 
@@ -603,6 +615,8 @@ void Viewer::initShaders()
         o_u_pointLightPos[i] = objShader->uniformLocation(posAttr.str().c_str());
         o_u_pointLightCol[i] = objShader->uniformLocation(colAttr.str().c_str());
     }
+    if ((o_u_ka = objShader->uniformLocation("alpha")) < 0)
+        qDebug() << "Unable to find m_shader location for" << "alpha" << objShader->log();
 
     o_u_kd = objShader->uniformLocation("Kd");
     o_u_ks = objShader->uniformLocation("Ks");
@@ -887,14 +901,21 @@ void Viewer::drawTool() {
 
     //camera()->getModelViewMatrix(modelViewMatrix);
 
-    QMatrix4x4 scale = QMatrix4x4();
+    QMatrix4x4 toolboxPos = QMatrix4x4();
+    float swingMult = 1;
     //scale.translate(QVector3D(0,1.5,0));
-    scale.translate(0.5, -0.25, -2);
-    scale.rotate(100, 1, 0, 0);
-    scale.rotate(-90, 0, 1, 0);
-    scale.scale(0.1);
+    toolboxPos.translate(0.6, -0.25, -1.6);
+    toolboxPos.rotate(-100, 0, 1, 0);
+    if(swing.active) {
+        swingMult = 0.5 + 0.5 * cos(fmin(swing.length, frame - swing.startFrame) * 2 * M_PI / swing.length);
+        if(frame - swing.startFrame > swing.length) {
+            swing.active = false;
+        }
+    }
+    toolboxPos.rotate(swingMult * -65, 0, 0, 1);
+    toolboxPos.scale(0.06);
 
-    objShader->setUniformValue(o_u_mvMatrix, modelViewMatrix * scale);
+    objShader->setUniformValue(o_u_mvMatrix, modelViewMatrix * toolboxPos);
     objShader->setUniformValue(o_u_nmMatrix, modelViewMatrix.normalMatrix());
 
     // Draw the meshes
@@ -904,6 +925,7 @@ void Viewer::drawTool() {
         objShader->setUniformValue(o_u_kd, _meshesGL[i].diffuse);
         objShader->setUniformValue(o_u_ks, _meshesGL[i].specular);
         objShader->setUniformValue(o_u_kn, _meshesGL[i].specularExponent);
+        objShader->setUniformValue(o_u_ka, _meshesGL[i].alpha);
 
         // Draw the mesh
         glBindVertexArray(_meshesGL[i].vao);
@@ -1050,6 +1072,12 @@ void Viewer::toggleNormalMaps(bool state) {
     m_program->setUniformValue(m_useNormalMap, state);
 }
 
+void Viewer::startSwingAnimation() {
+    swing.active = true;
+    swing.startFrame = frame;
+    swing.length = 30;
+}
+
 void Viewer::deleteSelected() {
     m_program->bind();
     int pointCLocs[3] = {m_c1Loc, m_c2Loc, m_c3Loc};
@@ -1083,6 +1111,8 @@ void Viewer::deleteSelected() {
     selectedObj.shape = nullptr; // Rebind to "null"
 
     cubeSelected(false);
+
+    startSwingAnimation();
 }
 
 void Viewer::changeColor(QColor c){

src/viewer/simpleViewer.h

@@ -109,6 +109,7 @@ private:
 	void initBuffers();
 	void deselect();
     void loadToolObj();
+    void startSwingAnimation();
     PickedGeom pickGeom(int, int);
 
 	void animate();
@@ -168,6 +169,7 @@ private:
     int o_u_kd;
     int o_u_ks;
     int o_u_kn;
+    int o_u_ka;
     int o_a_vPos;
     int o_a_vNorm;
 
@@ -248,6 +250,7 @@ private:
       QVector3D diffuse;
       QVector3D specular;
       GLfloat   specularExponent;
+      GLfloat   alpha;
 
       unsigned int numVertices;
     };