add 'perspective' NotePreset property

res/content/base/scripts/hud.lua

@@ -29,7 +29,9 @@ function on_hud_open()
 
     note = gfx.text3d.new({0.5, 99.5, 0.0015}, "Segmentation fault", {
         color={0, 0, 0, 1},
-        display="projected"
+        display="projected",
+        perspective=1.0,
+        scale=2.0
     })
 end
 

src/graphics/render/TextsRenderer.cpp

@@ -68,12 +68,24 @@ void TextsRenderer::renderNote(
             return;
         }
     } else {
+        float scale = 1.0f;
+        if (glm::abs(preset.perspective) > 0.0001f) {
+            float scale2 = scale /
+                (glm::distance(camera.position, pos) *
+                            util::sqr(camera.zoom) *
+                            glm::sqrt(glm::tan(camera.getFov() * 0.5f)));
+            scale = scale2 * preset.perspective +
+                    scale * (1.0f - preset.perspective);
+        }
         auto projpos = camera.getProjView() * glm::vec4(pos, 1.0f);
         pos = projpos;
+        if (pos.z < 0.0f) {
+            return;
+        }
         pos /= pos.z;
         pos.z = 0;
-        xvec = {2.0f/Window::width, 0, 0};
-        yvec = {0, 2.0f/Window::height, 0};
+        xvec = {2.0f/Window::width*scale, 0, 0};
+        yvec = {0, 2.0f/Window::height*scale, 0};
     }
     auto color = preset.color;
     batch.setColor(glm::vec4(color.r, color.g, color.b, color.a * opacity));

src/presets/NotePreset.cpp

@@ -36,6 +36,7 @@ dv::value NotePreset::serialize() const {
         {"scale", scale},
         {"render_distance", renderDistance},
         {"xray_opacity", xrayOpacity},
+        {"perspective", perspective},
     });
 }
 
@@ -49,4 +50,5 @@ void NotePreset::deserialize(const dv::value& src) {
     src.at("scale").get(scale);
     src.at("render_distance").get(renderDistance);
     src.at("xray_opacity").get(xrayOpacity);
+    src.at("perspective").get(perspective);
 }

src/presets/NotePreset.hpp

@@ -22,6 +22,7 @@ struct NotePreset : public Serializable {
     float scale = 1.0f;
     float renderDistance = 10.0f;
     float xrayOpacity = 0.0f;
+    float perspective = 0.0f;
 
     dv::value serialize() const override;
     void deserialize(const dv::value& src) override;

src/window/Camera.cpp

@@ -66,3 +66,7 @@ void Camera::setFov(float fov) {
 float Camera::getFov() const {
     return fov;
 }
+
+float Camera::getAspectRatio() const {
+    return aspect;
+}

src/window/Camera.hpp

@@ -35,4 +35,6 @@ class Camera {
 
     void setFov(float fov);
     float getFov() const;
+
+    float getAspectRatio() const;
 };