From b4e08245d4bd920d4d308682055b3ab140f0a93d Mon Sep 17 00:00:00 2001
From: Stefan Suhren <suhren.stefan@fh-swf.de>
Date: Mon, 11 Jan 2016 12:46:28 +0100
Subject: Make the tokens movable

---
 src/gldisc.cpp  | 34 ++++++++++++++++++++++++++--------
 src/gldisc.h    |  5 ++++-
 src/mmscene.cpp |  2 +-
 3 files changed, 31 insertions(+), 10 deletions(-)

(limited to 'src')

diff --git a/src/gldisc.cpp b/src/gldisc.cpp
index 85dd6d4..9315e4c 100644
--- a/src/gldisc.cpp
+++ b/src/gldisc.cpp
@@ -1,6 +1,6 @@
 #include "gldisc.h"
 
-GLDisc::GLDisc(double radius, double height, int sides, GLColorRgba color,
+GLDisc::GLDisc(double radius, double height, QVector3D lowerMiddlePoint, int sides, GLColorRgba color,
                QString textureFile)
     : GLBody(sqrt(pow(radius, 2) + pow(0.5 * height, 2)), color, textureFile)
 {
@@ -10,6 +10,8 @@ GLDisc::GLDisc(double radius, double height, int sides, GLColorRgba color,
     m_center = v_Z * 0.5 * m_height;
 
     m_circleRadius = radius;
+
+    m_lowerMiddlePoint = lowerMiddlePoint;
 }
 
 void GLDisc::makeSurface(QVector<GLPoint> *pointContainer,
@@ -82,15 +84,19 @@ void GLDisc::makeSurface(QVector<GLPoint> *pointContainer,
 
 bool GLDisc::isHit(QVector3D p1, QVector3D p2)
 {
-    if (!GLBody::isHit(p1, p2))
+
+    QVector3D p1New = p1 - m_lowerMiddlePoint;
+    QVector3D p2New = p2 - m_lowerMiddlePoint;
+
+    if (!GLBody::isHit(p1New, p2New))
     {
         return false;
     }
 
-    QVector3D lineVector = p2 - p1;
+    QVector3D lineVector = p2New - p1New;
 
     // Calculate intersection point with the xy plane
-    QVector3D vecBottom = p1 + lineVector * (-p1.z() / lineVector.z());
+    QVector3D vecBottom = p1New + lineVector * (-p1New.z() / lineVector.z());
 
     if (vecBottom.length() < m_circleRadius)
     {
@@ -99,7 +105,7 @@ bool GLDisc::isHit(QVector3D p1, QVector3D p2)
 
     // Calculate intersection point with the xy + m_heigth plane
     // Then drop z so that we get a projection onto the xy plane
-    QVector3D vecTop = (p1 + lineVector * ((m_height - p1.z()) /
+    QVector3D vecTop = (p1New + lineVector * ((m_height - p1New.z()) /
                                            lineVector.z())).toVector2D();
 
     if (vecTop.length() < m_circleRadius)
@@ -109,7 +115,7 @@ bool GLDisc::isHit(QVector3D p1, QVector3D p2)
 
     // Check if the mouse line is hitting the outer disc side
     QVector2D vecXYProjection = lineVector.toVector2D();
-    QVector2D vecXYStart = p1.toVector2D();
+    QVector2D vecXYStart = p1New.toVector2D();
 
     // Solved via the "Mitternachtsformel"
     float a = QVector2D::dotProduct(vecXYProjection, vecXYProjection);
@@ -125,7 +131,7 @@ bool GLDisc::isHit(QVector3D p1, QVector3D p2)
 
         float lambda1 = (-b - discriminant) / (2*a);
 
-        float z1 = (p1 + lambda1 * lineVector).z();
+        float z1 = (p1New + lambda1 * lineVector).z();
 
         if(z1 >= 0 && z1 <= m_height)
         {
@@ -134,7 +140,7 @@ bool GLDisc::isHit(QVector3D p1, QVector3D p2)
 
         float lambda2 = (-b + discriminant) / (2*a);
 
-        float z2 = (p1 + lambda2 * lineVector).z();
+        float z2 = (p1New + lambda2 * lineVector).z();
 
         if(z2 >= 0 && z2 <= m_height)
         {
@@ -152,3 +158,15 @@ QVector2D GLDisc::calculatePoint(double sideAngle)
 
     return QVector2D(x, y);
 }
+
+
+void GLDisc::draw(GLESRenderer *renderer)
+{
+    renderer->pushMvMatrix();
+
+    renderer->translate(m_lowerMiddlePoint);
+
+    GLBody::draw(renderer);
+
+    renderer->popMvMatrix();
+}
diff --git a/src/gldisc.h b/src/gldisc.h
index bd9d99d..48ba62b 100644
--- a/src/gldisc.h
+++ b/src/gldisc.h
@@ -8,9 +8,10 @@
 class GLDisc : public GLBody
 {
 public:
-    GLDisc(double radius = 1.0, double height = 2.0, int sides = 10, GLColorRgba color = GLColorRgba::clBlue, QString textureFile = "");
+    GLDisc(double radius = 1.0, double height = 2.0, QVector3D lowerMiddlePoint = QVector3D(0.0, 0.0, 0.0), int sides = 10, GLColorRgba color = GLColorRgba::clBlue, QString textureFile = "");
 
     virtual void makeSurface(QVector<GLPoint> *pointContainer, QVector<GLshort> *indexContainer);
+    virtual void draw(GLESRenderer *renderer);
     virtual bool isHit(QVector3D p1, QVector3D p2);
 
 private:
@@ -19,6 +20,8 @@ private:
     double m_height;
     double m_circleRadius;
     int m_sides;
+
+    QVector3D m_lowerMiddlePoint;
 };
 
 #endif // GLDISC_H
diff --git a/src/mmscene.cpp b/src/mmscene.cpp
index 7078bbb..3063b27 100644
--- a/src/mmscene.cpp
+++ b/src/mmscene.cpp
@@ -130,7 +130,7 @@ void MMScene::createSphere()
 
 void MMScene::createDisc()
 {
-    m_disc = new GLDisc(1.0, 0.5, 10, GLColorRgba::clBlue, ":/textures/white_disc.jpg");
+    m_disc = new GLDisc(0.5, 0.25, m_chessboard->fieldToPosition(QPoint(7, 7)), 10, GLColorRgba::clBlue, ":/textures/white_disc.jpg");
 
     m_disc->setDrawingMode(GL_TRIANGLES);
     m_disc->makeSurface(&m_points, &m_indices);
-- 
cgit v1.2.3-70-g09d2