Refactor particle age logic
Move to a model that only needs floats, and puts the age in the
SkParticleState struct. Add a better test case for spawn affector
animation, to verify that things are still working.
Bug: skia:
Change-Id: I97d99de5f5d4cb302b76116e67ecc93368fb1677
Reviewed-on: https://skia-review.googlesource.com/c/193580
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
diff --git a/particles/spiral.json b/particles/spiral.json
new file mode 100644
index 0000000..c55113a
--- /dev/null
+++ b/particles/spiral.json
@@ -0,0 +1,117 @@
+{
+ "MaxCount": 800,
+ "Duration": 4,
+ "Rate": 120,
+ "Life": {
+ "XValues": [],
+ "Segments": [
+ {
+ "Constant": true,
+ "Ranged": true,
+ "Bidirectional": false,
+ "A0": 2,
+ "B0": 0,
+ "C0": 0,
+ "D0": 0,
+ "A1": 3,
+ "B1": 0,
+ "C1": 0,
+ "D1": 0
+ }
+ ]
+ },
+ "Drawable": {
+ "Type": "SkCircleDrawable",
+ "Radius": 2
+ },
+ "Emitter": {
+ "Type": "SkCircleEmitter",
+ "Center": { "x": 0, "y": 0 },
+ "Radius": 0
+ },
+ "Spawn": [
+ {
+ "Type": "SkLinearVelocityAffector",
+ "Force": false,
+ "Angle": {
+ "XValues": [],
+ "Segments": [
+ {
+ "Constant": false,
+ "Ranged": false,
+ "Bidirectional": false,
+ "A0": 0,
+ "B0": 360,
+ "C0": 720,
+ "D0": 1080,
+ "A1": 0,
+ "B1": 0,
+ "C1": 0,
+ "D1": 0
+ }
+ ]
+ },
+ "Strength": {
+ "XValues": [],
+ "Segments": [
+ {
+ "Constant": true,
+ "Ranged": true,
+ "Bidirectional": false,
+ "A0": 50,
+ "B0": 0,
+ "C0": 0,
+ "D0": 0,
+ "A1": 60,
+ "B1": 0,
+ "C1": 0,
+ "D1": 0
+ }
+ ]
+ }
+ }
+ ],
+ "Update": [
+ {
+ "Type": "SkSizeAffector",
+ "Curve": {
+ "XValues": [],
+ "Segments": [
+ {
+ "Constant": false,
+ "Ranged": false,
+ "Bidirectional": false,
+ "A0": 0.5,
+ "B0": 1,
+ "C0": 1.5,
+ "D0": 2,
+ "A1": 0,
+ "B1": 0,
+ "C1": 0,
+ "D1": 0
+ }
+ ]
+ }
+ },
+ {
+ "Type": "SkColorAffector",
+ "Curve": {
+ "XValues": [],
+ "Segments": [
+ {
+ "Constant": false,
+ "Ranged": true,
+ "A0": [ 0.0999616, 0.140218, 0.784314, 1 ],
+ "B0": [ 0.183679, 0.183692, 0.764706, 1 ],
+ "C0": [ 0.242647, 0.43925, 0.916667, 1 ],
+ "D0": [ 0.523837, 0.886396, 0.980392, 1 ],
+ "A1": [ 0.378665, 0.121107, 0.705882, 1 ],
+ "B1": [ 0.538658, 0.162534, 0.872549, 1 ],
+ "C1": [ 0.672143, 0.259443, 0.867647, 1 ],
+ "D1": [ 0.934257, 0.229599, 0.955882, 1 ]
+ }
+ ]
+ }
+ }
+ ]
+}
\ No newline at end of file
