Changeset: 9 Implement IresSpritesheet

1 files changed, 17 insertions, 0 deletions

diff --git a/source/EditorUtils.cpp b/source/EditorUtils.cpp
index a0d2fc7..4863301 100644
--- a/source/EditorUtils.cpp
+++ b/source/EditorUtils.cpp
@@ -160,3 +160,20 @@ bool ImGui::Splitter(bool splitVertically, float thickness, float* size1, float*
 
 	return held;
 }
+
+float Utils::CalcImageHeight(glm::vec2 original, int targetWidth) {
+	// Xorig / Yorig = Xnew / Ynew
+	//          Ynew = Xnew * Yorig / Xorig
+	return targetWidth * original.y / original.x;
+}
+
+float Utils::CalcImageWidth(glm::vec2 original, float targetHeight) {
+	// Xorig / Yorig = Xnew / Ynew
+	//          Xnew = Xorig / Yorig * Ynew
+	return original.x / original.y * targetHeight;
+}
+
+ImVec2 Utils::FitImage(glm::vec2 original) {
+	float newWidth = ImGui::GetContentRegionAvail().x;
+	return ImVec2(newWidth, CalcImageHeight(original, newWidth));
+}