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Diffstat (limited to 'kmscube/esTransform.cpp')
-rw-r--r--kmscube/esTransform.cpp110
1 files changed, 48 insertions, 62 deletions
diff --git a/kmscube/esTransform.cpp b/kmscube/esTransform.cpp
index 899c038..daa28ac 100644
--- a/kmscube/esTransform.cpp
+++ b/kmscube/esTransform.cpp
@@ -46,8 +46,7 @@
#define PI 3.1415926535897932384626433832795f
-void
-esScale(ESMatrix *result, GLfloat sx, GLfloat sy, GLfloat sz)
+void esScale(ESMatrix* result, GLfloat sx, GLfloat sy, GLfloat sz)
{
result->m[0][0] *= sx;
result->m[0][1] *= sx;
@@ -65,8 +64,7 @@ esScale(ESMatrix *result, GLfloat sx, GLfloat sy, GLfloat sz)
result->m[2][3] *= sz;
}
-void
-esTranslate(ESMatrix *result, GLfloat tx, GLfloat ty, GLfloat tz)
+void esTranslate(ESMatrix* result, GLfloat tx, GLfloat ty, GLfloat tz)
{
result->m[3][0] += (result->m[0][0] * tx + result->m[1][0] * ty + result->m[2][0] * tz);
result->m[3][1] += (result->m[0][1] * tx + result->m[1][1] * ty + result->m[2][1] * tz);
@@ -74,16 +72,14 @@ esTranslate(ESMatrix *result, GLfloat tx, GLfloat ty, GLfloat tz)
result->m[3][3] += (result->m[0][3] * tx + result->m[1][3] * ty + result->m[2][3] * tz);
}
-void
-esRotate(ESMatrix *result, GLfloat angle, GLfloat x, GLfloat y, GLfloat z)
+void esRotate(ESMatrix* result, GLfloat angle, GLfloat x, GLfloat y, GLfloat z)
{
GLfloat sinAngle, cosAngle;
GLfloat mag = sqrtf(x * x + y * y + z * z);
- sinAngle = sinf ( angle * PI / 180.0f );
- cosAngle = cosf ( angle * PI / 180.0f );
- if ( mag > 0.0f )
- {
+ sinAngle = sinf(angle * PI / 180.0f);
+ cosAngle = cosf(angle * PI / 180.0f);
+ if (mag > 0.0f) {
GLfloat xx, yy, zz, xy, yz, zx, xs, ys, zs;
GLfloat oneMinusCos;
ESMatrix rotMat;
@@ -123,20 +119,19 @@ esRotate(ESMatrix *result, GLfloat angle, GLfloat x, GLfloat y, GLfloat z)
rotMat.m[3][2] = 0.0F;
rotMat.m[3][3] = 1.0F;
- esMatrixMultiply( result, &rotMat, result );
+ esMatrixMultiply(result, &rotMat, result);
}
}
-void
-esFrustum(ESMatrix *result, float left, float right, float bottom, float top, float nearZ, float farZ)
+void esFrustum(ESMatrix* result, float left, float right, float bottom, float top, float nearZ, float farZ)
{
- float deltaX = right - left;
- float deltaY = top - bottom;
- float deltaZ = farZ - nearZ;
- ESMatrix frust;
+ float deltaX = right - left;
+ float deltaY = top - bottom;
+ float deltaZ = farZ - nearZ;
+ ESMatrix frust;
- if ( (nearZ <= 0.0f) || (farZ <= 0.0f) ||
- (deltaX <= 0.0f) || (deltaY <= 0.0f) || (deltaZ <= 0.0f) )
+ if ((nearZ <= 0.0f) || (farZ <= 0.0f) ||
+ (deltaX <= 0.0f) || (deltaY <= 0.0f) || (deltaZ <= 0.0f))
return;
frust.m[0][0] = 2.0f * nearZ / deltaX;
@@ -156,27 +151,24 @@ esFrustum(ESMatrix *result, float left, float right, float bottom, float top, fl
esMatrixMultiply(result, &frust, result);
}
-
-void
-esPerspective(ESMatrix *result, float fovy, float aspect, float nearZ, float farZ)
+void esPerspective(ESMatrix* result, float fovy, float aspect, float nearZ, float farZ)
{
GLfloat frustumW, frustumH;
- frustumH = tanf( fovy / 360.0f * PI ) * nearZ;
+ frustumH = tanf(fovy / 360.0f * PI) * nearZ;
frustumW = frustumH * aspect;
- esFrustum( result, -frustumW, frustumW, -frustumH, frustumH, nearZ, farZ );
+ esFrustum(result, -frustumW, frustumW, -frustumH, frustumH, nearZ, farZ);
}
-void
-esOrtho(ESMatrix *result, float left, float right, float bottom, float top, float nearZ, float farZ)
+void esOrtho(ESMatrix* result, float left, float right, float bottom, float top, float nearZ, float farZ)
{
- float deltaX = right - left;
- float deltaY = top - bottom;
- float deltaZ = farZ - nearZ;
- ESMatrix ortho;
+ float deltaX = right - left;
+ float deltaY = top - bottom;
+ float deltaZ = farZ - nearZ;
+ ESMatrix ortho;
- if ( (deltaX == 0.0f) || (deltaY == 0.0f) || (deltaZ == 0.0f) )
+ if ((deltaX == 0.0f) || (deltaY == 0.0f) || (deltaZ == 0.0f))
return;
esMatrixLoadIdentity(&ortho);
@@ -190,41 +182,36 @@ esOrtho(ESMatrix *result, float left, float right, float bottom, float top, floa
esMatrixMultiply(result, &ortho, result);
}
-
-void
-esMatrixMultiply(ESMatrix *result, ESMatrix *srcA, ESMatrix *srcB)
+void esMatrixMultiply(ESMatrix* result, ESMatrix* srcA, ESMatrix* srcB)
{
- ESMatrix tmp;
- int i;
-
- for (i=0; i<4; i++)
- {
- tmp.m[i][0] = (srcA->m[i][0] * srcB->m[0][0]) +
- (srcA->m[i][1] * srcB->m[1][0]) +
- (srcA->m[i][2] * srcB->m[2][0]) +
- (srcA->m[i][3] * srcB->m[3][0]) ;
-
- tmp.m[i][1] = (srcA->m[i][0] * srcB->m[0][1]) +
- (srcA->m[i][1] * srcB->m[1][1]) +
- (srcA->m[i][2] * srcB->m[2][1]) +
- (srcA->m[i][3] * srcB->m[3][1]) ;
-
- tmp.m[i][2] = (srcA->m[i][0] * srcB->m[0][2]) +
- (srcA->m[i][1] * srcB->m[1][2]) +
- (srcA->m[i][2] * srcB->m[2][2]) +
- (srcA->m[i][3] * srcB->m[3][2]) ;
-
- tmp.m[i][3] = (srcA->m[i][0] * srcB->m[0][3]) +
- (srcA->m[i][1] * srcB->m[1][3]) +
- (srcA->m[i][2] * srcB->m[2][3]) +
- (srcA->m[i][3] * srcB->m[3][3]) ;
+ ESMatrix tmp;
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ tmp.m[i][0] = (srcA->m[i][0] * srcB->m[0][0]) +
+ (srcA->m[i][1] * srcB->m[1][0]) +
+ (srcA->m[i][2] * srcB->m[2][0]) +
+ (srcA->m[i][3] * srcB->m[3][0]);
+
+ tmp.m[i][1] = (srcA->m[i][0] * srcB->m[0][1]) +
+ (srcA->m[i][1] * srcB->m[1][1]) +
+ (srcA->m[i][2] * srcB->m[2][1]) +
+ (srcA->m[i][3] * srcB->m[3][1]);
+
+ tmp.m[i][2] = (srcA->m[i][0] * srcB->m[0][2]) +
+ (srcA->m[i][1] * srcB->m[1][2]) +
+ (srcA->m[i][2] * srcB->m[2][2]) +
+ (srcA->m[i][3] * srcB->m[3][2]);
+
+ tmp.m[i][3] = (srcA->m[i][0] * srcB->m[0][3]) +
+ (srcA->m[i][1] * srcB->m[1][3]) +
+ (srcA->m[i][2] * srcB->m[2][3]) +
+ (srcA->m[i][3] * srcB->m[3][3]);
}
memcpy(result, &tmp, sizeof(ESMatrix));
}
-
-void
-esMatrixLoadIdentity(ESMatrix *result)
+void esMatrixLoadIdentity(ESMatrix* result)
{
memset(result, 0x0, sizeof(ESMatrix));
result->m[0][0] = 1.0f;
@@ -232,4 +219,3 @@ esMatrixLoadIdentity(ESMatrix *result)
result->m[2][2] = 1.0f;
result->m[3][3] = 1.0f;
}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-09 03:35:48 +0000