fixed issue #21 (small image + normal map size 10% -> crash)

Theverat · Theverat · commit 5dcc7c982548 · 2017-04-20T13:19:03.000+02:00
diff --git a/src_gui/mainwindow.cpp b/src_gui/mainwindow.cpp
@@ -899,8 +899,11 @@ void MainWindow::normalmapSizeChanged() {
     ui->label_normalmapSize->setText(text);
 }
 
+// Used to scale down the input image if a value less than 100 
+// is set in spinBox_normalmapSize. We have to make sure size is at least 1
 int MainWindow::calcPercentage(int value, int percentage) {
-    return (int) (((double)value / 100.0) * percentage);
+    const int newValue = (((double)value / 100.0) * percentage);
+    return std::max(newValue, 1);
 }
 
 void MainWindow::showAboutDialog() {

Original file line number	Diff line number	Diff line change
`@@ -899,8 +899,11 @@ void MainWindow::normalmapSizeChanged() {`
`899`	`899`	`ui->label_normalmapSize->setText(text);`
`900`	`900`	`}`
`901`	`901`
	`902`	`+// Used to scale down the input image if a value less than 100`
	`903`	`+// is set in spinBox_normalmapSize. We have to make sure size is at least 1`
`902`	`904`	`int MainWindow::calcPercentage(int value, int percentage) {`
`903`		`- return (int) (((double)value / 100.0) * percentage);`
	`905`	`+ const int newValue = (((double)value / 100.0) * percentage);`
	`906`	`+ return std::max(newValue, 1);`
`904`	`907`	`}`
`905`	`908`
`906`	`909`	`void MainWindow::showAboutDialog() {`