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Merge "DO NOT MERGE Remove the rs_quaternion functions until mr1" into honeycomb

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This commit is contained in:
Jason Sams
2011-01-26 11:54:38 -08:00
committed by Android (Google) Code Review
parent e361ca6428 ca11318ac0
commit e0fc4b70f8
1 changed files with 0 additions and 250 deletions
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250
libs/rs/scriptc/rs_core.rsh
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@@ -251,256 +251,6 @@ extern void __attribute__((overloadable)) rsMatrixTranspose(rs_matrix4x4 *m);
extern void __attribute__((overloadable)) rsMatrixTranspose(rs_matrix3x3 *m);
extern void __attribute__((overloadable)) rsMatrixTranspose(rs_matrix2x2 *m);
/////////////////////////////////////////////////////
// quaternion ops
/////////////////////////////////////////////////////
_RS_STATIC void __attribute__((overloadable))
rsQuaternionSet(rs_quaternion *q, float w, float x, float y, float z) {
q->w = w;
q->x = x;
q->y = y;
q->z = z;
}
_RS_STATIC void __attribute__((overloadable))
rsQuaternionSet(rs_quaternion *q, const rs_quaternion *rhs) {
q->w = rhs->w;
q->x = rhs->x;
q->y = rhs->y;
q->z = rhs->z;
}
_RS_STATIC void __attribute__((overloadable))
rsQuaternionMultiply(rs_quaternion *q, float s) {
q->w *= s;
q->x *= s;
q->y *= s;
q->z *= s;
}
_RS_STATIC void __attribute__((overloadable))
rsQuaternionMultiply(rs_quaternion *q, const rs_quaternion *rhs) {
q->w = -q->x*rhs->x - q->y*rhs->y - q->z*rhs->z + q->w*rhs->w;
q->x = q->x*rhs->w + q->y*rhs->z - q->z*rhs->y + q->w*rhs->x;
q->y = -q->x*rhs->z + q->y*rhs->w + q->z*rhs->x + q->w*rhs->y;
q->z = q->x*rhs->y - q->y*rhs->x + q->z*rhs->w + q->w*rhs->z;
}
_RS_STATIC void
rsQuaternionAdd(rs_quaternion *q, const rs_quaternion *rhs) {
q->w *= rhs->w;
q->x *= rhs->x;
q->y *= rhs->y;
q->z *= rhs->z;
}
_RS_STATIC void
rsQuaternionLoadRotateUnit(rs_quaternion *q, float rot, float x, float y, float z) {
rot *= (float)(M_PI / 180.0f) * 0.5f;
float c = cos(rot);
float s = sin(rot);
q->w = c;
q->x = x * s;
q->y = y * s;
q->z = z * s;
}
_RS_STATIC void
rsQuaternionLoadRotate(rs_quaternion *q, float rot, float x, float y, float z) {
const float len = x*x + y*y + z*z;
if (len != 1) {
const float recipLen = 1.f / sqrt(len);
x *= recipLen;
y *= recipLen;
z *= recipLen;
}
rsQuaternionLoadRotateUnit(q, rot, x, y, z);
}
_RS_STATIC void
rsQuaternionConjugate(rs_quaternion *q) {
q->x = -q->x;
q->y = -q->y;
q->z = -q->z;
}
_RS_STATIC float
rsQuaternionDot(const rs_quaternion *q0, const rs_quaternion *q1) {
return q0->w*q1->w + q0->x*q1->x + q0->y*q1->y + q0->z*q1->z;
}
_RS_STATIC void
rsQuaternionNormalize(rs_quaternion *q) {
const float len = rsQuaternionDot(q, q);
if (len != 1) {
const float recipLen = 1.f / sqrt(len);
rsQuaternionMultiply(q, recipLen);
}
}
_RS_STATIC void
rsQuaternionSlerp(rs_quaternion *q, const rs_quaternion *q0, const rs_quaternion *q1, float t) {
if (t <= 0.0f) {
rsQuaternionSet(q, q0);
return;
}
if (t >= 1.0f) {
rsQuaternionSet(q, q1);
return;
}
rs_quaternion tempq0, tempq1;
rsQuaternionSet(&tempq0, q0);
rsQuaternionSet(&tempq1, q1);
float angle = rsQuaternionDot(q0, q1);
if (angle < 0) {
rsQuaternionMultiply(&tempq0, -1.0f);
angle *= -1.0f;
}
float scale, invScale;
if (angle + 1.0f > 0.05f) {
if (1.0f - angle >= 0.05f) {
float theta = acos(angle);
float invSinTheta = 1.0f / sin(theta);
scale = sin(theta * (1.0f - t)) * invSinTheta;
invScale = sin(theta * t) * invSinTheta;
} else {
scale = 1.0f - t;
invScale = t;
}
} else {
rsQuaternionSet(&tempq1, tempq0.z, -tempq0.y, tempq0.x, -tempq0.w);
scale = sin(M_PI * (0.5f - t));
invScale = sin(M_PI * t);
}
rsQuaternionSet(q, tempq0.w*scale + tempq1.w*invScale, tempq0.x*scale + tempq1.x*invScale,
tempq0.y*scale + tempq1.y*invScale, tempq0.z*scale + tempq1.z*invScale);
}
_RS_STATIC void rsQuaternionGetMatrixUnit(rs_matrix4x4 *m, const rs_quaternion *q) {
float x2 = 2.0f * q->x * q->x;
float y2 = 2.0f * q->y * q->y;
float z2 = 2.0f * q->z * q->z;
float xy = 2.0f * q->x * q->y;
float wz = 2.0f * q->w * q->z;
float xz = 2.0f * q->x * q->z;
float wy = 2.0f * q->w * q->y;
float wx = 2.0f * q->w * q->x;
float yz = 2.0f * q->y * q->z;
m->m[0] = 1.0f - y2 - z2;
m->m[1] = xy - wz;
m->m[2] = xz + wy;
m->m[3] = 0.0f;
m->m[4] = xy + wz;
m->m[5] = 1.0f - x2 - z2;
m->m[6] = yz - wx;
m->m[7] = 0.0f;
m->m[8] = xz - wy;
m->m[9] = yz - wx;
m->m[10] = 1.0f - x2 - y2;
m->m[11] = 0.0f;
m->m[12] = 0.0f;
m->m[13] = 0.0f;
m->m[14] = 0.0f;
m->m[15] = 1.0f;
}
/////////////////////////////////////////////////////
// utility funcs
/////////////////////////////////////////////////////
__inline__ _RS_STATIC void __attribute__((overloadable, always_inline))
rsExtractFrustumPlanes(const rs_matrix4x4 *modelViewProj,
float4 *left, float4 *right,
float4 *top, float4 *bottom,
float4 *near, float4 *far) {
// x y z w = a b c d in the plane equation
left->x = modelViewProj->m[3] + modelViewProj->m[0];
left->y = modelViewProj->m[7] + modelViewProj->m[4];
left->z = modelViewProj->m[11] + modelViewProj->m[8];
left->w = modelViewProj->m[15] + modelViewProj->m[12];
right->x = modelViewProj->m[3] - modelViewProj->m[0];
right->y = modelViewProj->m[7] - modelViewProj->m[4];
right->z = modelViewProj->m[11] - modelViewProj->m[8];
right->w = modelViewProj->m[15] - modelViewProj->m[12];
top->x = modelViewProj->m[3] - modelViewProj->m[1];
top->y = modelViewProj->m[7] - modelViewProj->m[5];
top->z = modelViewProj->m[11] - modelViewProj->m[9];
top->w = modelViewProj->m[15] - modelViewProj->m[13];
bottom->x = modelViewProj->m[3] + modelViewProj->m[1];
bottom->y = modelViewProj->m[7] + modelViewProj->m[5];
bottom->z = modelViewProj->m[11] + modelViewProj->m[9];
bottom->w = modelViewProj->m[15] + modelViewProj->m[13];
near->x = modelViewProj->m[3] + modelViewProj->m[2];
near->y = modelViewProj->m[7] + modelViewProj->m[6];
near->z = modelViewProj->m[11] + modelViewProj->m[10];
near->w = modelViewProj->m[15] + modelViewProj->m[14];
far->x = modelViewProj->m[3] - modelViewProj->m[2];
far->y = modelViewProj->m[7] - modelViewProj->m[6];
far->z = modelViewProj->m[11] - modelViewProj->m[10];
far->w = modelViewProj->m[15] - modelViewProj->m[14];
float len = length(left->xyz);
*left /= len;
len = length(right->xyz);
*right /= len;
len = length(top->xyz);
*top /= len;
len = length(bottom->xyz);
*bottom /= len;
len = length(near->xyz);
*near /= len;
len = length(far->xyz);
*far /= len;
}
__inline__ _RS_STATIC bool __attribute__((overloadable, always_inline))
rsIsSphereInFrustum(float4 *sphere,
float4 *left, float4 *right,
float4 *top, float4 *bottom,
float4 *near, float4 *far) {
float distToCenter = dot(left->xyz, sphere->xyz) + left->w;
if (distToCenter < -sphere->w) {
return false;
}
distToCenter = dot(right->xyz, sphere->xyz) + right->w;
if (distToCenter < -sphere->w) {
return false;
}
distToCenter = dot(top->xyz, sphere->xyz) + top->w;
if (distToCenter < -sphere->w) {
return false;
}
distToCenter = dot(bottom->xyz, sphere->xyz) + bottom->w;
if (distToCenter < -sphere->w) {
return false;
}
distToCenter = dot(near->xyz, sphere->xyz) + near->w;
if (distToCenter < -sphere->w) {
return false;
}
distToCenter = dot(far->xyz, sphere->xyz) + far->w;
if (distToCenter < -sphere->w) {
return false;
}
return true;
}
/////////////////////////////////////////////////////
// int ops
/////////////////////////////////////////////////////