Created a Storyboard frame that can fade and pan between images

2015-10-08 21:52:09 +02:00
parent 856053e3f2
commit 77b54ab988
1 changed files with 112 additions and 0 deletions
@@ -0,0 +1,112 @@
+#ifndef GAME_GUI_STORYBOARDFRAME_H__
+#define GAME_GUI_STORYBOARDFRAME_H__
+
+#include "GUI/TextureFrame.h"
+
+namespace dd
+{
+namespace GUI
+{
+
+class StoryboardFrame : public TextureFrame
+{
+public:
+	struct Transition
+	{
+		double Time = 0.0;
+		double Duration = 0.0;
+		Rectangle Viewport;
+		std::string Texture;
+	};
+
+	StoryboardFrame(Frame* parent, std::string name)
+		: TextureFrame(parent, name) 
+	{
+		m_TextureFrame = new TextureFrame(this, "StoryboardFrameHelper");
+		//m_TextureFrame->DisableScissor();
+	}
+
+	void AddTransition(Transition& transition)
+	{
+		m_Timeline.push_back(transition);
+	}
+
+	void Play()
+	{
+		m_Playing = 1;
+	}
+
+	void Update(double dt)
+	{
+		if (!m_Playing) {
+			return;
+		}
+
+		m_Time += (double)m_Playing * dt;
+
+		if (m_NextIndex < m_Timeline.size()) {
+			if (m_Time >= m_Timeline.at(m_NextIndex).Time) {
+				m_CurrentIndex = m_NextIndex;
+				Transition& t = m_Timeline.at(m_CurrentIndex);
+
+				m_TextureFrame->FadeToTexture(t.Texture, t.Duration);
+				//m_TextureFrame->SetTexture(t.Texture);
+				m_TextureFrame->SizeToTexture();
+
+				if (m_StartRect == Rectangle()) {
+					m_StartRect = Rectangle(0, 0, m_TextureFrame->Width, m_TextureFrame->Height);
+				} else {
+					m_StartRect = m_TargetRect;
+				}
+
+				double wScaleParent = Width / (double)m_TextureFrame->Width;
+				double wScale = m_TextureFrame->Width / (double)t.Viewport.Width;
+				LOG_DEBUG("wScale: %f", wScale);
+				double hScaleParent = Height / (double)m_TextureFrame->Height;
+				double hScale = m_TextureFrame->Height / (double)t.Viewport.Height;
+				LOG_DEBUG("hScale: %f", hScale);
+				m_TargetRect.X = -t.Viewport.X * wScale * wScaleParent;
+				m_TargetRect.Y = -t.Viewport.Y * hScale * hScaleParent;
+				m_TargetRect.Width = m_TextureFrame->Width * wScale * wScaleParent;
+				m_TargetRect.Height = m_TextureFrame->Height * hScale * hScaleParent;
+
+				m_NextIndex++;
+			}
+		}
+
+		Transition& t = m_Timeline.at(m_CurrentIndex);
+		double progress = glm::min((m_Time - t.Time)/t.Duration, 1.0);
+		m_TextureFrame->X = (int)easeSine(progress, m_StartRect.X, (m_TargetRect.X - m_StartRect.X), 1.0);
+		m_TextureFrame->Y = (int)easeSine(progress, m_StartRect.Y, (m_TargetRect.Y - m_StartRect.Y), 1.0);
+		m_TextureFrame->Width = (int)easeSine(progress, m_StartRect.Width, (m_TargetRect.Width - m_StartRect.Width), 1.0);
+		m_TextureFrame->Height = (int)easeSine(progress, m_StartRect.Height, (m_TargetRect.Height - m_StartRect.Height), 1.0);
+	}
+
+public:
+	int m_Playing = 0;
+	double m_Time = 0;
+	int m_CurrentIndex = 0;
+	int m_NextIndex = 0;
+	std::vector<Transition> m_Timeline;
+	Rectangle m_StartRect;
+	Rectangle m_TargetRect;
+
+	TextureFrame* m_TextureFrame = nullptr;
+
+	double easeSine(double t, double b, double c, double d) 
+	{
+		return -c / 2 * (glm::cos(glm::pi<double>()*t / d) - 1) + b;
+	}
+
+	float easeExpo(float t,float b , float c, float d) {
+		if (t == 0) return b;
+		if (t == d) return b + c;
+		if ((t /= d / 2) < 1) return c / 2 * pow(2, 10 * (t - 1)) + b;
+		return c / 2 * (-pow(2, -10 * --t) + 2) + b;
+	}
+};
+
+}
+}
+
+#endif