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authormattkae <mattkae@protonmail.com>2022-01-22 16:36:33 -0500
committermattkae <mattkae@protonmail.com>2022-01-22 16:36:33 -0500
commit8b02f97579728fdbc160095073bf87c88bed3f07 (patch)
tree2c29d71b61573fdbb3d8cb82e0a91ef67d077387 /2d
parent3f3d1ed1cba61015aa47a6ad9812ae0d30316cc5 (diff)
Randomly updating the vertices on my rectrangle
Diffstat (limited to '2d')
-rw-r--r--2d/softbody/softbody_2/SpringRectangle.h29
-rwxr-xr-x2d/softbody/softbody_2/dist/output.wasmbin36383 -> 44516 bytes
2 files changed, 26 insertions, 3 deletions
diff --git a/2d/softbody/softbody_2/SpringRectangle.h b/2d/softbody/softbody_2/SpringRectangle.h
index bc8eed8..47f4aff 100644
--- a/2d/softbody/softbody_2/SpringRectangle.h
+++ b/2d/softbody/softbody_2/SpringRectangle.h
@@ -4,6 +4,11 @@
struct SoftbodyUpdateVertexData {
Vector2 position;
+
+ SoftbodyUpdateVertexData* left;
+ SoftbodyUpdateVertexData* right;
+ SoftbodyUpdateVertexData* top;
+ SoftbodyUpdateVertexData* bottom;
};
struct SoftbodyRectangle {
@@ -14,17 +19,19 @@ struct SoftbodyRectangle {
// Represents the density of springs that will be in the rectangle.
int32 springDensity = 10;
+ float32 totalTimeSeconds = 0.f;
SoftbodyUpdateVertexData* updateData = NULL;
Mesh2d mesh;
Mesh2d pointsMesh;
+ Vertex2d* vertices = NULL;
Vertex2d* pointsVertices = NULL;
void load(Renderer2d* renderer) {
int32 numVertices = springDensity * springDensity; // Each subdivision is a square.
int32 numIndices = 6 * ((springDensity - 1) * (springDensity - 1));
- auto vertices = new Vertex2d[numVertices];
+ vertices = new Vertex2d[numVertices];
updateData = new SoftbodyUpdateVertexData[numVertices];
auto indices = new GLuint[numIndices];
@@ -39,6 +46,11 @@ struct SoftbodyRectangle {
vertices[vIdx] = { position, Vector4(1, 0, 0, 1) };
updateData[vIdx].position = position;
+ if (x != 0) updateData[vIdx].left = &updateData[vIdx - 1];
+ if (x != springDensity - 1) updateData[vIdx].right = &updateData[vIdx + 1];
+ if (y != 0) updateData[vIdx].top = &updateData[vIdx - springDensity];
+ if (y != springDensity - 1) updateData[vIdx].bottom = &updateData[vIdx + springDensity];
+
if (y != springDensity - 1 && x != springDensity - 1) {
indices[iIdx++] = vIdx;
indices[iIdx++] = vIdx + 1;
@@ -60,16 +72,26 @@ struct SoftbodyRectangle {
pointsVertices[v].position = vertices[v].position;
pointsVertices[v].color = Vector4(1, 1, 0, 1);
}
+ pointsMesh.model = mesh.model;
pointsMesh.load(pointsVertices, numVertices, renderer, GL_DYNAMIC_DRAW);
- delete [] vertices;
delete [] indices;
}
void update(float32 dtSeconds) {
+ totalTimeSeconds += dtSeconds;
for (int32 v = 0; v < pointsMesh.numVertices; v++) {
- pointsVertices[v].position = Vector2(updateData[v].position.x * width, updateData[v].position.y * height) + position;
+ float32 r = rand();
+ updateData[v].position += (Vector2(cosf(r), sinf(r)) * 0.005f);
+
+
+ Vector2 nextPosition = Vector2(updateData[v].position.x, updateData[v].position.y);
+
+ vertices[v].position = nextPosition;
+ pointsVertices[v].position = nextPosition;
}
+
+ mesh.updateVertices(vertices);
pointsMesh.updateVertices(pointsVertices);
}
@@ -81,6 +103,7 @@ struct SoftbodyRectangle {
void unload() {
mesh.unload();
pointsMesh.unload();
+ delete [] vertices;
delete [] pointsVertices;
}
};
diff --git a/2d/softbody/softbody_2/dist/output.wasm b/2d/softbody/softbody_2/dist/output.wasm
index 4d1241e..35a32bd 100755
--- a/2d/softbody/softbody_2/dist/output.wasm
+++ b/2d/softbody/softbody_2/dist/output.wasm
Binary files differ