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-rw-r--r--examples/pugl_embed_demo.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/examples/pugl_embed_demo.c b/examples/pugl_embed_demo.c
index 174fd36..a540b67 100644
--- a/examples/pugl_embed_demo.c
+++ b/examples/pugl_embed_demo.c
@@ -32,7 +32,8 @@
#include <stdio.h>
#include <string.h>
-static const int borderWidth = 64;
+static const int borderWidth = 64;
+static const uintptr_t reverseTimerId = 1u;
typedef struct
{
@@ -49,6 +50,7 @@ typedef struct
double lastDrawTime;
bool mouseEntered;
bool verbose;
+ bool reversing;
} PuglTestApp;
static const float backgroundVertices[] = {
@@ -78,7 +80,8 @@ onDisplay(PuglView* view)
const double thisTime = puglGetTime(app->world);
if (app->continuous) {
- const double dTime = thisTime - app->lastDrawTime;
+ const double dTime = (thisTime - app->lastDrawTime) *
+ (app->reversing ? -1.0 : 1.0);
app->xAngle = fmod(app->xAngle + dTime * 100.0, 360.0);
app->yAngle = fmod(app->yAngle + dTime * 100.0, 360.0);
@@ -249,6 +252,9 @@ onEvent(PuglView* view, const PuglEvent* event)
case PUGL_LEAVE_NOTIFY:
app->mouseEntered = false;
break;
+ case PUGL_TIMER:
+ app->reversing = !app->reversing;
+ break;
default:
break;
}
@@ -321,6 +327,8 @@ main(int argc, char** argv)
puglShowWindow(app.parent);
puglShowWindow(app.child);
+ puglStartTimer(app.child, reverseTimerId, 3.6);
+
PuglFpsPrinter fpsPrinter = { puglGetTime(app.world) };
unsigned framesDrawn = 0;
bool requestedAttention = false;