n2y = v3y - v1y;
n2z = v3z - v1z;
- // Avegare of previous normal and N1 x N2
+ // Average of previous normal and N1 x N2
n3x = n3x / 2.0f + (n1y * n2z - n1z * n2y) / 2.0f;
n3y = n3y / 2.0f + (n1z * n2x - n1x * n2z) / 2.0f;
n3z = n3z / 2.0f + (n1x * n2y - n1y * n2x) / 2.0f;
float averageZ(float x1, float x2, float y1, float y2, float* vertices,
int meshWidth, int meshHeight, float glWidth, float glHeight) {
- x1 = ((x1 + glWidth / 2.0f) / glWidth) * meshWidth;
- x2 = ((x2 + glWidth / 2.0f) / glWidth) * meshWidth;
- y1 = ((y1 + glHeight / 2.0f) / glHeight) * meshHeight;
- y2 = ((y2 + glHeight / 2.0f) / glHeight) * meshHeight;
+ x1 = ((x1 + glWidth * 0.5f) / glWidth) * meshWidth;
+ x2 = ((x2 + glWidth * 0.5f) / glWidth) * meshWidth;
+ y1 = ((y1 + glHeight * 0.5f) / glHeight) * meshHeight;
+ y2 = ((y2 + glHeight * 0.5f) / glHeight) * meshHeight;
int quadX1 = clamp(x1, 0, meshWidth);
int quadX2 = clamp(x2, 0, meshWidth);
if (a > 0.0f) {
tz = -a;
} else {
- z1 = averageZ(x1, x, y1, y, vertices, meshWidth, meshHeight, glWidth, glHeight);
- z2 = averageZ(x, x2, y1, y, vertices, meshWidth, meshHeight, glWidth, glHeight);
- z3 = averageZ(x, x2, y, y2, vertices, meshWidth, meshHeight, glWidth, glHeight);
- z4 = averageZ(x1, x, y, y2, vertices, meshWidth, meshHeight, glWidth, glHeight);
+// z1 = averageZ(x1, x, y1, y, vertices, meshWidth, meshHeight, glWidth, glHeight);
+// z2 = averageZ(x, x2, y1, y, vertices, meshWidth, meshHeight, glWidth, glHeight);
+// z3 = averageZ(x, x2, y, y2, vertices, meshWidth, meshHeight, glWidth, glHeight);
+// z4 = averageZ(x1, x, y, y2, vertices, meshWidth, meshHeight, glWidth, glHeight);
}
x1 -= x;
drawTriangleMesh(NAMED_WaterMesh);
}
+void drawNormals() {
+ int width = State_meshWidth;
+ int height = State_meshHeight;
+
+ float *vertices = loadTriangleMeshVerticesF(NAMED_WaterMesh);
+
+ bindProgramVertex(NAMED_PVSky);
+ bindProgramFragment(NAMED_PFLighting);
+
+ color(1.0f, 0.0f, 0.0f, 1.0f);
+
+ int y = 0;
+ for ( ; y < height; y++) {
+ int yOffset = y * width;
+ int x = 0;
+ for ( ; x < width; x++) {
+ int offset = (yOffset + x) * 8;
+ float vx = vertices[offset + 5];
+ float vy = vertices[offset + 6];
+ float vz = vertices[offset + 7];
+ float nx = vertices[offset + 0];
+ float ny = vertices[offset + 1];
+ float nz = vertices[offset + 2];
+ drawLine(vx, vy, vz, vx + nx / 10.0f, vy + ny / 10.0f, vz + nz / 10.0f);
+ }
+ }
+}
+
int main(int index) {
int dropX = Drop_dropX;
if (dropX != -1) {
drawSky();
drawLighting();
drawLeaves();
+ //drawNormals();
return 1;
}
hResolution += 2;
for (int y = 0; y <= hResolution; y++) {
+ final boolean shift = (y & 0x1) == 0;
final float yOffset = y * quadHeight - glHeight / 2.0f - quadHeight;
final float t = 1.0f - y / (float) hResolution;
for (int x = 0; x <= wResolution; x++) {
- rs.triangleMeshAddVertex_XYZ_ST_NORM(
- -1.0f + x * quadWidth - quadWidth, yOffset, 0.0f,
- x / (float) wResolution, t,
- 0.0f, 0.0f, -1.0f);
+ if (shift) {
+ rs.triangleMeshAddVertex_XYZ_ST_NORM(
+ -1.0f + x * quadWidth - quadWidth, yOffset, 0.0f,
+ x / (float) wResolution, t,
+ 0.0f, 0.0f, -1.0f);
+ } else {
+ rs.triangleMeshAddVertex_XYZ_ST_NORM(
+ -1.0f + x * quadWidth - quadWidth * 0.5f, yOffset, 0.0f,
+ x / (float) wResolution, t,
+ 0.0f, 0.0f, -1.0f);
+ }
}
}
for (int y = 0; y < hResolution; y++) {
+ final boolean shift = (y & 0x1) == 0;
+ final int yOffset = y * (wResolution + 1);
for (int x = 0; x < wResolution; x++) {
- final int index = y * (wResolution + 1) + x;
+ final int index = yOffset + x;
final int iWR1 = index + wResolution + 1;
- rs.triangleMeshAddTriangle(index, index + 1, iWR1);
- rs.triangleMeshAddTriangle(index + 1, iWR1, iWR1 + 1);
+ if (shift) {
+ rs.triangleMeshAddTriangle(index, index + 1, iWR1);
+ rs.triangleMeshAddTriangle(index + 1, iWR1 + 1, iWR1);
+ } else {
+ rs.triangleMeshAddTriangle(index, iWR1 + 1, iWR1);
+ rs.triangleMeshAddTriangle(index, index + 1, iWR1 + 1);
+ }
}
}
#define RSID_PARTICLES 1
-#define PARTICLE_STRUCT_FIELDS_COUNT 4
+#define PARTICLE_STRUCT_FIELDS_COUNT 6
#define PARTICLE_STRUCT_ANGLE 0
#define PARTICLE_STRUCT_DISTANCE 1
#define PARTICLE_STRUCT_SPEED 2
#define PARTICLE_STRUCT_RADIUS 3
+#define PARTICLE_STRUCT_S 4
+#define PARTICLE_STRUCT_T 5
#define RSID_PARTICLES_BUFFER 2
#define PARTICLE_BUFFER_COMPONENTS_COUNT 5
#define PARTICLES_TEXTURES_COUNT 2
#define ELLIPSE_RATIO 0.892f
-#define ELLIPSE_TWIST 0.02333333333f
void drawSpace(int width, int height) {
bindTexture(NAMED_PFBackground, 0, NAMED_TSpace);
drawQuadTexCoords(
- 0.0f, 0.0f, 0.0f,
- 0.0f, 1.0f,
- width, 0.0f, 0.0f,
- 2.0f, 1.0f,
- width, height, 0.0f,
- 2.0f, 0.0f,
- 0.0f, height, 0.0f,
- 0.0f, 0.0f);
+ 0.0f, 0.0f, 0.0f, 0.0f, 1.0f,
+ width, 0.0f, 0.0f, 2.0f, 1.0f,
+ width, height, 0.0f, 2.0f, 0.0f,
+ 0.0f, height, 0.0f, 0.0f, 0.0f);
}
void drawLights(int width, int height) {
x + 512.0f * 1.1f, y + 512.0f, 0.0f);
}
-void drawParticle(float *particle, int index, float *particleBuffer, int bufferIndex,
- float w, float h) {
-
- float distance = particle[index + PARTICLE_STRUCT_DISTANCE];
- float angle = particle[index + PARTICLE_STRUCT_ANGLE];
- float speed = particle[index + PARTICLE_STRUCT_SPEED];
- float r = particle[index + PARTICLE_STRUCT_RADIUS];
+void drawParticle(float *particle, float *particleBuffer, float w, float h) {
+ float distance = particle[PARTICLE_STRUCT_DISTANCE];
+ float angle = particle[PARTICLE_STRUCT_ANGLE];
+ float speed = particle[PARTICLE_STRUCT_SPEED];
+ float r = particle[PARTICLE_STRUCT_RADIUS];
float a = angle + speed;
float x = distance * sinf_fast(a);
float y = distance * cosf_fast(a) * ELLIPSE_RATIO;
- float z = distance * ELLIPSE_TWIST;
- float s = cosf_fast(z);
- float t = sinf_fast(z);
+ float s = particle[PARTICLE_STRUCT_S];
+ float t = particle[PARTICLE_STRUCT_T];
float sX = t * x + s * y + w;
float sY = s * x - t * y + h;
// lower left vertex of the particle's triangle
- particleBuffer[bufferIndex + 1] = sX - r; // X
- particleBuffer[bufferIndex + 2] = sY + r; // Y
+ particleBuffer[1] = sX - r; // X
+ particleBuffer[2] = sY + r; // Y
// lower right vertex of the particle's triangle
- bufferIndex += PARTICLE_BUFFER_COMPONENTS_COUNT;
- particleBuffer[bufferIndex + 1] = sX + r; // X
- particleBuffer[bufferIndex + 2] = sY + r; // Y
+ particleBuffer[6] = sX + r; // X
+ particleBuffer[7] = sY + r; // Y
// upper middle vertex of the particle's triangle
- bufferIndex += PARTICLE_BUFFER_COMPONENTS_COUNT;
- particleBuffer[bufferIndex + 1] = sX; // X
- particleBuffer[bufferIndex + 2] = sY - r; // Y
+ particleBuffer[11] = sX; // X
+ particleBuffer[12] = sY - r; // Y
- particle[index + PARTICLE_STRUCT_ANGLE] = a;
+ particle[PARTICLE_STRUCT_ANGLE] = a;
}
void drawParticles(int width, int height) {
int radius = State_galaxyRadius;
int particlesCount = State_particlesCount;
- int count = particlesCount * PARTICLE_STRUCT_FIELDS_COUNT;
float *particle = loadArrayF(RSID_PARTICLES, 0);
float *particleBuffer = loadArrayF(RSID_PARTICLES_BUFFER, 0);
float h = height * 0.5f;
int i = 0;
- int bufferIndex = 0;
- for ( ; i < count; i += PARTICLE_STRUCT_FIELDS_COUNT) {
- drawParticle(particle, i, particleBuffer, bufferIndex, w, h);
- // each particle is a triangle (3 vertices) of 6 properties (ABGR, X, Y, Z, S, T)
- bufferIndex += 3 * PARTICLE_BUFFER_COMPONENTS_COUNT;
+ for ( ; i < particlesCount; i++) {
+ drawParticle(particle, particleBuffer, w, h);
+ particle += PARTICLE_STRUCT_FIELDS_COUNT;
+ // each particle is a triangle (3 vertices) of 5 properties (ABGR, X, Y, S, T)
+ particleBuffer += 3 * PARTICLE_BUFFER_COMPONENTS_COUNT;
}
uploadToBufferObject(NAMED_ParticlesBuffer);
import java.util.TimeZone;
+@SuppressWarnings({"FieldCanBeLocal"})
class GalaxyRS {
private static final int GALAXY_RADIUS = 300;
private static final int PARTICLES_COUNT = 12000;
+ private static final float ELLIPSE_TWIST = 0.023333333f;
private static final int RSID_STATE = 0;
private static final int RSID_TEXTURE_FLARES = 2;
private static final int RSID_PARTICLES = 1;
- private static final int PARTICLE_STRUCT_FIELDS_COUNT = 4;
+ private static final int PARTICLE_STRUCT_FIELDS_COUNT = 6;
private static final int PARTICLE_STRUCT_ANGLE = 0;
private static final int PARTICLE_STRUCT_DISTANCE = 1;
private static final int PARTICLE_STRUCT_SPEED = 2;
private static final int PARTICLE_STRUCT_RADIUS = 3;
+ private static final int PARTICLE_STRUCT_S = 4;
+ private static final int PARTICLE_STRUCT_T = 5;
private static final int RSID_PARTICLES_BUFFER = 2;
initRS();
}
- public void destroy() {
- mScript.destroy();
- mSampler.destroy();
- mLightSampler.destroy();
- mPfBackground.destroy();
- mPfsBackground.destroy();
- mPvBackground.destroy();
- mPvOrthoAlloc.mAlloc.destroy();
- for (Allocation a : mTextures) {
- a.destroy();
- }
- mState.destroy();
- mPfLighting.destroy();
- mParticles.destroy();
- mPfsLights.destroy();
- mParticlesMesh.destroy();
- mParticlesBuffer.destroy();
- mStateType.destroy();
- }
-
- @Override
- protected void finalize() throws Throwable {
- try {
- destroy();
- } finally {
- super.finalize();
- }
- }
-
private void initRS() {
createProgramVertex();
createProgramFragmentStore();
float d = abs(randomGauss()) * GALAXY_RADIUS / 2.0f + random(-4.0f, 4.0f);
float z = randomGauss() * 0.5f * 0.8f * ((GALAXY_RADIUS - d) / (float) GALAXY_RADIUS);
z += 1.0f;
+ float p = d * ELLIPSE_TWIST;
particles[index + PARTICLE_STRUCT_ANGLE] = random(0.0f, (float) (Math.PI * 2.0));
particles[index + PARTICLE_STRUCT_DISTANCE] = d;
particles[index + PARTICLE_STRUCT_SPEED] = random(0.0015f, 0.0025f) *
(0.5f + (0.5f * (float) GALAXY_RADIUS / d)) * 0.7f;
particles[index + PARTICLE_STRUCT_RADIUS] = z * random(1.2f, 2.1f);
-
+ particles[index + PARTICLE_STRUCT_S] = (float) Math.cos(p);
+ particles[index + PARTICLE_STRUCT_T] = (float) Math.sin(p);
+
int red, green, blue;
if (d < GALAXY_RADIUS / 3.0f) {
red = (int) (220 + (d / (float) GALAXY_RADIUS) * 35);
import android.renderscript.RSSurfaceView;
class GalaxyView extends RSSurfaceView {
- private GalaxyRS mRender;
-
public GalaxyView(Context context) {
super(context);
setFocusable(true);
super.surfaceChanged(holder, format, w, h);
RenderScript RS = createRenderScript();
- mRender = new GalaxyRS(w, h);
- mRender.init(RS, getResources());
- }
-
- @Override
- public void surfaceDestroyed(SurfaceHolder holder) {
- if (mRender != null) mRender.destroy();
+ GalaxyRS render = new GalaxyRS(w, h);
+ render.init(RS, getResources());
}
}
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